Drexel-SDP GK-12 ACTIVITY
|
|
- Polly Melton
- 5 years ago
- Views:
Transcription
1 Drexel-SDP GK-12 ACTIVITY Subject Areas: Chemistry, Physical Science, Numbers & Operations, Problem Solving Activity Title: Color Switching Molecules the Magic of Fluorescence The green plastic tops of these grocery products appears nearly the same in room light, but examination under UV light reveals that one exhibits strong yellow fluorescence Matthew D. Cathell Grade Level: 6 (6 8) Time Required: 60 minutes
2 Group Size: 4-5 students Expendable Cost per Group: <$5 Summary: Using common grocery store materials, students learn about the process of fluorescence. Students test various materials for fluorescent properties under an ultraviolet lamp (or black light ). This activity may accompany lessons on physics (light and sound) or astronomy, or whenever concepts of light and color are taught. Engineering Connection: Fluorescence is a process frequently used in science and engineering. A fluorescent molecule will glow (give off light) when it is struck by light of a different color. Often, UV light (which we cannot see) will cause the fluorescent molecule to glow with a visible color (which we can see). Fluorescent molecules are often used to track the movement of larger molecules in cells. Fluorescence is also used to measure the amount of a chemical present in a solution, and to monitor chemical reactions. Keywords: fluorescence, light, ultraviolet (UV) light, wavelength Educational Standards: Science: Math: Learning Objectives: After this lesson, students should be able to: Materials List: Each group needs: access to a UV lamp or black light (can be shared among groups) clear glass test-tubes or vials water, vinegar and/or acetone as solvents (depending on fluorescent material to be dissolved, see Safety Issues) To share with the entire class (to demonstrate fluorescence): a new $5, $10 and/or $20 bill postage stamps 2
3 water-soluble fluorescent dye (preferred), such as Atomic Glow dye from stevespanglerscience.com, or an organic-soluble dye such as fluorescein, Nile red, or other fluorescent dyes (see Safety Issues) tonic water laundry detergent (with and without bleach alternative) vitamin tablets Introduction / Motivation: See the student handout pages. Vocabulary / Definitions: Word absorption fluorescence emission Definition In the context of fluorescence, absorption refers to the light that the fluorescent molecule takes in. This absorbed light has a higher energy than the light that the fluorescent molecule gives out, or emits A process in which a molecule in an object gives off visible light of a higher wavelength (different color) than the light shining on it (often UV light) In the context of fluorescence, emission refers to the light that the fluorescent molecule gives out. The emitted light has a lower energy than the light that that fluorescent molecule took in, or absorbed Procedure: Background for the teacher: Fluorescence is a scientific topic that is frequently not discussed until the advanced high school or college level. However, the phenomenon of fluorescence is familiar to students of all ages (they ve all seen how their white sneakers and clothing glow under a black light). This activity is meant to introduce them to the most fundamental understanding of what fluorescence means, and why it is observed. This activity is best used when the students have been introduced to the concept of light as a wave of radiation. They should be aware that different colors of light have different wavelengths and different energies. They should also understand that what we see as visible light is actually only a small portion of a much larger spectrum that includes ultraviolet radiation, X-rays, infrared radiation, microwaves, and radio waves. 3
4 One critical idea that students should understand is that a fluorescent molecule takes in higher energy light and gives off lower energy light. This is because no process is 100% efficient, and some of the energy is lost to other non-fluorescent processes (like heat). This is a very important concept that will come up frequently in more advanced science classes. It also helps students understand why light bulbs get hot most of the electricity flowing through a normal incandescent light bulb is actually turned into heat, instead of light, giving incandescent bulbs poor efficiency (and making them rather wasteful of energy). A point of confusion for the students may arise from the fact that the UV lamp or black light gives off a violet-colored light. This violet light is not the UV radiation, which is invisible! It just happens that UV lamps also give off some visible light in the violet and blue regions of the color spectrum, along with ultraviolet radiation. This should be clarified for the students. Before the activity: The following handout pages contain information about fluorescence that can be printed for the students. They should read this information (either as a homework assignment or in class) before performing the activity. 4
5 NAME DATE What is it? The Facts About Fluorescence Chances are, you ve heard the words fluorescence or fluorescent. Maybe you ve used it to describe certain colors of crayons or markers, or a particular kind of light bulb. Fluorescence does relate to both color and light, but how? Fluorescence (be careful not to spell it flourescence) is a chemical process that happens when some chemical molecules interact with light. When light hits these fluorescent molecules, the molecules take in (or absorb) the light. The molecules become excited by the light (yes, that s the scientific way of describing it!) because they ve received the light s energy. These excited molecules then give off (or emit) that energy by glowing with light of a different color! For instance, a fluorescent molecule might take in blue light, but give off red light. However, a fluorescent molecule will not absorb red light and emit blue light. We ll talk about the reason why on the next page. Most molecules are not fluorescent and do not undergo the fluorescent process. For instance, plain water does not fluoresce. Fluorescent molecules typically have a chemical structure with lots of doubled-bonded atoms (making them stiffer and less bendable). What does color have to do with it? As you might know, light is a just a form of radiation that our eyes can see. We can think of light radiation as a kind of wave. Different colors of light have different sizes of wavelengths (the distance between the peaks or valleys of a wave). To the right is a model of the colors of the rainbow spectrum. See how the waves of violet light are closer together than the waves of red light? The closer and tighter the waves are, the more energy they have. This means that violet light has the most energy of any visible color, and red light has the least energy of any visible color. Our eyes are only able to see a very limited set of radiation waves (only the ones from the rainbow). If the wavelengths are too small or too big, we can no longer see them. We call waves that are smaller than those of violet light ultraviolet radiation. We call waves that are bigger than those of red light infrared radiation. Which one has more energy? 5
6 If you said ultraviolet radiation has more energy than infrared radiation, you re right! Remember, the smaller the waves, the higher the energy! Along with the colors of the rainbow, the sun gives off ultraviolet (or UV) radiation. Even though we can t see this high-energy radiation, it s what gives us sunburns! Ultraviolet radiation and fluorescence Many fluorescent molecules will absorb invisible ultraviolet light and turn it into visible light. For instance, the chemical quinine will take ultraviolet light and transform it into blue light. Fluorescence always involves taking in (absorbing) higher energy light and giving off (emitting) lower energy light. Now you understand why we said earlier that a fluorescent molecule cannot absorb red light and emit blue light. Red light has less energy than blue light. Again, fluorescent molecules must take in higher energy light than they give off. Fluorescence all around you As we said previously, most molecules do not fluoresce. However, there are still plenty of things we use every day that have fluorescent molecules inside. In this activity, we will be investigating some of common household products that contain fluorescent chemicals. Some fun fluorescent facts The word fluorescence is named after a mineral called fluorite, which happens to fluoresce. Many other minerals do, as well. A fluorescent light bulb is much more efficient than a regular incandescent bulb. This means that a fluorescent bulb uses less energy to make the same amount of light as an incandescent bulb. Most of the electricity flowing through an incandescent bulb gets turned into heat not light which is why incandescent bulbs get so hot! It only takes a fluorescent molecule 5 to 20 nanoseconds (a nanosecond is one billionth of a second, or second) to absorb higher energy radiation and transform it into lower energy radiation. That s really fast! 6
7 With the students: 1. As a warm-up activity, you can give a demonstration of the hidden fluorescence in money and postage stamps. Rather than passing these materials around the classroom, have each group come to a demonstration table to observe! Slide some relatively new cash bills ($5 and up) under the UV light (the ones with larger, off-centered Presidents heads will always work). You should observe a differently-colored glowing strip in each bill. $5 blue $10 orange $20 green $50 yellow $100 red Postage stamps also frequently have fluorescent markings that can be seen in UV light. Ask the students to consider why these markings are placed on money and stamps (it s to hinder counterfeiting). 2. Next, have the students put some water in a small glass or vial. Have them confirm that the water does not fluoresce under the UV lamp. Contrast this with some tonic water. The tonic water will glow a bright blue color because of the presence of the fluorescent compound quinine (which gives tonic its bitter taste). If the tonic has been left open for a period of time to allow it to go flat, it will be undistinguishable from water until it is placed under UV light. Tonic water (left) contains the chemical quinine, which fluoresces under UV light, while plain water (right) exhibits no fluorescence Matthew D. Cathell 7
8 3. Have the students look at vitamin tablets under UV light. They may notice that the tablets have fluorescent speckles. Vitamin pills can have a variety of fluorescent and non-fluorescent compounds packed together with a binder material. Have students investigate an unbroken tablet, one that has been broken in two pieces, and one that has been crushed into a fine powder. If a vitamin B-12 tablet is available, dissolve it in vinegar and observe the color of solution fluorescence. 4. Laundry detergents often contain fluorescent compounds. This is especially true of detergents with bleach alternative whitening agents. The fluorescent compounds generally are excited by UV light and emit violet-blue light. This has the effect of making white fabric appear even whiter. Have students compare two detergents (one with bleach alternative and one without) under the UV light. Both will likely fluoresce strongly. In order to differentiate between the two, it may be necessary to accurately dilute each with equal amounts of water. With enough dilution, the detergent with extra whitening agents will likely fluoresce noticeably more than detergent without whitening agents. Regular laundry detergent (left) and a detergent with additional whitening agents (right) have differing amounts of fluorescence, when equally diluted in water Matthew D. Cathell 5. Finally, have students examine solutions made a fluorescent dye. A number of different dyes are available that fluoresce with different colors. These materials can be purchased in solution or in solid form. Some dyes are water-soluble, while other dissolve in organic solvents like acetone (follow the instructions with your particular compound, see Safety Issues). Have the students observe the dye solutions under the UV light. If the solutions are concentrated enough, they will have noticeable colors even in regular room lighting, and will change to a different color under UV light. The solutions can also be diluted until they appear colorless in room lighting, but still fluoresce under UV light. 8
9 Dilute solutions of fluorescent dyes fluorescein (left) and Nile red (right) are indistinguishable in room light (top), but fluoresce with different colors under UV light (bottom) 2008 Matthew D. Cathell Safety Issues: ***SPECIAL NOTE IF ORGANIC-SOLUBLE FLUORESCENT DYES ARE USED*** Several commonly available fluorescent dyes, including fluorescein and Nile red, have poor solubility in water. These dyes work best in solvents like acetone. If organic-soluble dyes are used in this activity, it is more appropriate as a demonstration rather than an investigation performed by the students. Organic solvents can cause serious injury, particularly if splashed into the eyes. Even if students are not performing the experiment themselves, extreme care must be taken to ensure safety of both students and instructor. Strict adherence to safety eyewear is essential. Water-soluble dye is greatly preferred for this experiment. Students should also be reminded to never taste any of the materials, and to promptly wash their hands after handling the chemicals. 9
10 Most battery-powered black lights do not emit dangerous amounts of ultraviolet light. However, more powerful high intensity UV lamps (for laboratory use) can cause eye injuries to students if they gaze directly into the light. Students should be instructed to not look directly at the light source, but rather, to simply shine the light on their liquid samples and observe the effects. Students should be instructed that the vitamin tablets are to be used to observe fluorescence and are not to be consumed. Troubleshooting Tips: Depending on the strength of your UV light source, it may be necessary to dim the room lights in order to best observe fluorescence. If you have solid fluorescent powders, note that a tiny amount goes a long way (a few specks of powder can easily dye an entire bottle of solvent). Assessment: The following questions may be used to assess student understanding of fluorescence and this activity. 1. A fluorescent compound glows a yellow color in ultraviolet light. Which one of the following is FALSE? a. the yellow light being emitted is of a lower energy than the light exciting the molecule b. the compound is being excited by red or orange light c. the fluorescent compound probably has double bonds and a rigid chemical structure d. the fluorescence cycle is taking 5 to 20 nanoseconds Answer: b. The compound is not being excited by red or orange light, which are less energetic than yellow light. Fluorescence only occurs when higher energy radiation is absorbed and lower energy radiation is emitted. 2. What is the difference between the sizes of waves of the rainbow of colors (red, orange, yellow, green, blue and violet). Which has the longest waves, and which has the shortest? 3. What negative effect can ultraviolet radiation have on the human body? 10
11 Activity Extensions: Students can use fluorescent solutions (such as tonic water) to paint designs on paper. When the tonic dries, the hidden designs can be revealed under UV light. Be aware that some papers have fluorescent compounds themselves, which make the paper appear whiter. This activity would work well with brown paper bags. Have the students research how flowers and other plants use fluorescence to their advantage. Other: A water soluble dye for this activity can be obtained at Author: Matthew D. Cathell Owner: Drexel University GK-12 program, Engineering as a Contextual Vehicle for Science and Mathematics Education, supported in part by National Science Foundation Award No. DGE Copyright: 2008 Drexel University GK-12 program 11
Drexel-SDP GK-12 ACTIVITY. Subject Areas: Chemistry, Physical Science, Numbers & Operations, Problem Solving
Drexel-SDP GK-12 ACTIVITY Subject Areas: Chemistry, Physical Science, Numbers & Operations, Problem Solving Associated Unit: Serial Dilution the Solution to Pollution? Activity Title: ACTIVITY II: Serial
More informationLesson Plan: Fluorescence
Lesson Plan: Fluorescence Background Fluorescence is produced when a material or substance absorbs light of a given color and then gives off light of another color. The light that is given off, or emitted,
More informationSolar Water Heater Facts or Factors?
Drexel-SDP GK-12 ACTIVITY Solar Water Heater Facts or Factors? Subject Area(s): Algebra, Data Analysis & Probability, Physical Science, Science & Technology Activity Title : Solar Water Heater Facts or
More informationL 18 Thermodynamics [3] Thermodynamics- review. electromagnetic spectrum. radiation. What produces thermal radiation?
L 18 Thermodynamics [3] Heat transfer processes convection conduction Physics of the atmosphere the ozone layer Greenhouse effect climate change Thermodynamics- review Thermodynamics is the science dealing
More informationCan you keep your cool?
Can you keep your cool? Subject Area(s) Earth and Space, Physical Science, Science and Technology Lesson Title Can you keep your cool? Header Grade Level 5 Time Required Image 1 ADA Description: Insulation
More informationBringing Choices to Light
Bringing Choices to Light Table of Contents Click on the titles to visit that section. You can also print these pages, by specifying page range. GE Lighting Teacher s Kit Introduction... 2 3 Lighting and
More informationLight. Lab. FCJJ 16 - Solar Hydrogen Science Kit. Next Generation Science Standards. Initial Prep Time. Lesson Time. Assembly Requirements
Next Generation Science Standards NGSS Science and Engineering Practices: Asking questions and defining problems Developing and using models Planning and carrying out investigations Analyzing and interpreting
More informationL 18 Thermodynamics [3]
L 18 Thermodynamics [3] Review Heat transfer processes convection conduction Greenhouse effect Climate change Ozone layer Review Internal energy sum of all the energy of all atoms in a system The temperature
More informationConvection. L 18 Thermodynamics [3] Conduction. heat conduction. radiation
L 18 Thermodynamics [3] Heat transfer processes convection conduction Thermodynamics of the atmosphere Greenhouse effect and climate change Effect of the ozone layer Convection heat is transferred from
More informationConvection Conduction
L 18 Thermodynamics [3] Review Heat transfer processes convection conduction Greenhouse effect Climate change Ozone layer Review The temperature of a system is a measure of the average kinetic energy of
More informationGreenhouse Effect and Global Warming Environmental Science Student Laboratory Kit
4 Catalog No. AP7324 Introduction Publication No. 7324 Greenhouse Effect and Global Warming Environmental Science Student Laboratory Kit What is the greenhouse effect? How does the amount of greenhouse
More informationDisciplinary Core Idea: PS3.A: Definitions of Energy - Energy can be moved from place to place by moving objects or through sound, light, or
Cassie Miller SCI 319 Lesson Plan Title: Energy Transfer Grade: 4 Learning Objectives: The learner will explain how energy is transferred by sound, light, heat, and electricity. The learner will analyze
More informationExamples of light bulbs: Filament bulb, Strip light, Energy efficient light bulb
Light bulbs Outline of activity A survey of the lights used in the school. Resources Examples of light bulbs: Filament bulb, Strip light, Energy efficient light bulb Introduction Look at the different
More informationFluorescence Microscopy. Terms and concepts to know: 10/11/2011. Visible spectrum (of light) and energy
Fluorescence Microscopy Louisiana Tech University Ruston, Louisiana Microscopy Workshop Dr. Mark DeCoster Associate Professor Biomedical Engineering 1 Terms and concepts to know: Signal to Noise Excitation
More informationInteractions Within Earth's Atmospheres How do greenhouse gases cause atmospheric warming?
Activitydevelop Interactions Within Earth's Atmospheres How do greenhouse gases cause atmospheric warming? Overview In this activity, students use computational models to explore how Earth's surface and
More informationA Survey of Laser Types. Gas Lasers
Mihail Pivtoraiko Andrei Rozhkov Applied Optics Winter 2003 A Survey of Laser Types Laser technology is available to us since 1960 s, and since then has been quite well developed. Currently, there is a
More informationFactors That Affect Global Temperature How Do Cloud Cover and Greenhouse Gas Concentration in the Atmosphere Affect the Surface Temperature of Earth?
Lab Handout Lab 17. Factors That Affect Global Temperature: How Do Cloud Cover and Greenhouse Gas Concentration in the Atmosphere Affect Introduction All matter in the universe radiates energy across a
More informationDemonstrating Climate Change and the Water Cycle to Fifth Grade Students
Demonstrating Climate Change and the Water Cycle to Fifth Grade Students The format of this activity was a presentation using a laptop and projector, interspersed with demonstrations and experiments that
More informationDrexel-SDP GK-12 ACTIVITY
Drexel-SDP GK-12 ACTIVITY Subject Area(s): Earth Science Associated Unit: None Associated Lesson: None Activity Title: Growing Gem (Crystals) Grade Level: 7 and 8 (7-9) Activity Dependency: None Time Required:
More informationThe Greenhouse Effect
Name: Date: The Greenhouse Effect This document provides an overview of the earth's atmospheric "greenhouse effect" by briefly exploring the atmospheres of nearby planets and discussing our atmosphere's
More informationFORMS OF ENERGY All forms of energy fall under two categories
Extra copy for Lesson 2 So teacher can review this info at the beginning of Lesson 2 FORMS OF ENERGY All forms of energy fall under two categories KINETIC Kinetic energy is energy in motion POTENTIAL Potential
More informationPlanetary Energy Balance
Planetary Energy Balance Overview of Planetary Energy Balance Energy coming into the Earth s atmosphere from the sun is always in balance with the energy leaving Earth s atmosphere going back out into
More informationThe Power of the Albedo Effect on Global Warming By Leigh Hutchens July 30, 2013 Climate Change
Absorption and Re-Radiation Lab Name: _ E.N. Read the Power of the Albedo Effect on Global Warming article and define the following items below: http://www.greenoptimistic.com/2013/07/30/the-power-of-the-albedo-effect-on-global-warming/#.ux3jlf5dhr4
More informationAn Unsettling Look at the Settled Science of Global Warming Part 2: Layman s Discussion John Eggert P.Eng.
An Unsettling Look at the Settled Science of Global Warming Part 2: Layman s Discussion John Eggert P.Eng. Introduction This is the second of three papers on the impact of Carbon Dioxide (CO2) on climate.
More informationWhat is the Ohio Energy Project?
What is the Ohio Energy Project? Tusky VAlley Intermediate School Project Leader: Mrs. Tiffany Shaw Project Summary- Tusky Valley Intermediate School participated in the Ohio Energy Project for the first
More informationActivity Subject Area(s) Associated Unit Associated Lesson Activity Title Header Image 1 ADA Description: Caption: Image file: Source/Rights:
Activity Subject Area(s) Biology Associated Unit Associated Lesson Activity Title Breaking News: Molecular Trucks Riding Inside Cells! Header Image 1 ADA Description: An ant carries a 1 millimeter square
More informationLED STREETLIGHT INFORMATION FREQUENTLY ASKED QUESTIONS
1 How many streetlights does FortisAlberta own and operate? FortisAlberta owns and operates more than 100,000 streetlights in Alberta. Why did FortisAlberta introduce an LED Conversion Streetlight Option?
More informationLED STREETLIGHT INFORMATION FREQUENTLY ASKED QUESTIONS
1 How many streetlights does FortisAlberta own and operate? FortisAlberta owns and operates more than 100,000 streetlights in Alberta. Why did FortisAlberta introduce an LED Conversion Streetlight Option?
More information1. Content Sections. These sections cover a variety of standards-related core content about safety, sustainability, and energy efficiency.
e-smartkids Website Teacher s Guide This teacher s guide will help you use the e-smartkids site to educate your students about electrical safety, energy science, energy efficiency, and sustainability.
More informationTake the:: By Doing: Using: Seeing Watersheds, warm up Branching Out. By Doing: Using: Water Models. By Doing: Using:
Take the: Attend the:: Take the:: Thank you for participating in the Arizona Water Festival program! Our program assessment shows that students who experience the entire Water Festival unit, from pre-lessons
More informationINDEX THE FUTURE OF LIGHTING... 2 LED VS. TRADITIONAL LIGHTING... 3 OUR LED PRODUCT LINE... 4 THE PROBLEM WITH FLUORESCENT LIGHTING...
INDEX THE FUTURE OF LIGHTING... 2 LED VS. TRADITIONAL LIGHTING... 3 OUR LED PRODUCT LINE... 4 THE PROBLEM WITH FLUORESCENT LIGHTING... 5 INSTALLATION... 6 CERTIFICATION AND WARRANTY... 7 APPLICATIONS AND
More informationHOW TO BUILD A PIZZA BOX SOLAR OVEN
HOW TO BUILD A PIZZA BOX SOLAR OVEN ACTIVITY Get cooking with the sun! Use one of our MANY sunny days to learn how you can trap the sun s natural heat to make a homemade oven. KEY CONCEPTS ENERGY SOLAR
More informationBTEC Unit 1 Physics Revision. Learning Aim E: Energy Stores, Energy Transfers and Energy Transformations
BTEC Unit 1 Physics Revision Learning Aim E: Energy Stores, Energy Transfers and Energy Transformations Forms of Energy and Their Uses Kinetic (Mechanical) Description and Use The energy in moving objects.
More informationA Brief Overview of Plastic Sorting Technology
A Brief Overview of Plastic Sorting Technology Presented by: Plastics Forming Enterprises, LLC Plastics Forming Enterprise, LLC. Consulting Experience, Solutions, Results PFE has been solving client s
More informationDark Skies Outreach to Sub-Sharan Africa Program Outdoor Lighting Audit Teacher Guide
Grades: 6-12 Overview: Students will be auditing the types of outdoor lights on one building at their school to determine how much energy those lights are using. Students will ultimately be making recommendations
More informationPhysics PHY1F. (Jan10phy1f01) General Certificate of Secondary Education Foundation Tier January Unit Physics P1. Unit Physics P1.
Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Science B Unit Physics P1 Physics Unit Physics P1 Written Paper General Certificate of Secondary
More informationFILTRATION & UV SYSTEM
FILTRATION & UV SYSTEM Operation and Maintenance Manual Model BBUV 2700 BBBUV 2700 Aquamarine Water Treatment 122 Capricorn Drive Capricorn Park Muizenberg Cape Town South Africa Tel. 021 788 53 41 Fax
More informationMeasuring Manganese Concentration Using Spectrophotometry
Measuring Manganese Concentration Using Spectrophotometry Objectives To use spectroscopy to determine the amount of Manganese is an unknown sample. Scenario Your have just joined a "Green Team" at the
More informationMS for Tropical Fish monthly
MS for Tropical Fish monthly Lights and Lighting by Dr David Ford Our technical writer looks at aquarium lighting with the usual fundamental scientific information. But this explains why and how we use
More informationUES Bright Students: The Conservation Generation Pre Visit PowerPoint Script for Teachers
Slide 1 UES / Bright Students Title Slide Slide 2 Energy Introduction Energy. It s in you, your home, your environment it s in everyone and it s everywhere. Energy is what moves us, what makes life happen.
More informationGREEN SOLUTIONS Taking fluorescent lighting to the next evolution.
GREEN SOLUTIONS Taking fluorescent lighting to the next evolution. With energy efficiency on everyone s agenda, the development team at ESL have designed a solution that is setting the benchmark. Not only
More information3.3.2 Module P2: Radiation and life. Overview
..2 Module P2: Radiation and life Overview The possible health risks of radiation, both in nature and from technological devices, are becoming of increasing concern. In some cases, misunderstanding the
More informationDrexel-SDP GK-12 ACTIVITY
Drexel-SDP GK-12 ACTIVITY Subject Area(s): Solar Energy, Scientific Method Associated Unit: None Lesson Title: Build Your Own Solar Water Heater Header Insert Image 1 here, right justified to wrap Image
More informationNevada Department of Education Standards
Energy Chains Students will act out a skit to demonstrate how energy makes its way from the sun to us, allowing us to run, play and even do homework. Students will understand that energy doesn t get used-up
More informationOCEAN ACIDIFICATION SUPPLIES AND EQUIPMENT. Per whole group. Per participant. Per team. Grades 6 8, minutes.
OCEAN Grades 6 8, 9 12 60 minutes ACIDIFICATION DESIGN CHALLENGE Participants design and build a system that uses bubbles to reduce the amount of dissolved carbon dioxide in water, thereby changing the
More informationDark Skies Rangers Program
Grades: 5 8 (and 9 12) Overview: Students will be auditing the types of outdoor lights on one building at their school to determine how much energy those lights are using. Students will ultimately be making
More informationTemperature sensor, CBL, TI83/84, solar heating panel, insulation material and plastic or glass covers.
Solar heating Data acquisition Objectives: The objective of this experiment is to explore how insulation, covers and different surface materials effect the power and efficiency of a solar panel. Materials:
More informationConcept review: Fluorescence
16 Concept review: Fluorescence Some definitions: Chromophore. The structural feature of a molecule responsible for the absorption of UV or visible light. Fluorophore. A chromophore that remits an absorbed
More informationLesson Planning Tool for Climate Change
Lesson Planning Tool for Climate Change Title of Lesson: Greenhouse Effect and Greenhouse Gases Grade Level: 6-8 Subject: Physical Science Source(s) of the lesson:( http://www.doe.virginia.gov/testing/sol/standards_docs/science/2010/lesson_plans/earth_sci/cos
More informationLesson 3: Lighting. Light Bulb Debate
Lesson 3: Lighting Light Bulb Debate In 2007, President George W. Bush signed into law the Energy Independence and Security Act, which focused on reducing energy consumption and greenhouse gas emissions.
More informationEntry Level Science GCSE Homework Booklet
Entry Level Science GCSE Homework Booklet Homework Task Date Set Date Due Parent Check Teacher Check 1. Human Health 2. Inherited Characteristics 3. Problems with crude oil 4. How has the Earth changed
More information8. PYROMETRY FUNDAMENTALS
8. PYROMETRY FUNDAMENTALS Being part of a highly specialized field of measuring techniques has developed a certain mysterious aura about it. This mystery stems from the false perception that the technique
More informationGlobal Warming and the Hydrological Cycle
Global Warming and the Hydrological Cycle Climate Change Projections Wet regions will become wetter Dry regions will become drier Precipitation will occur less frequently Precipitation will be more intense
More informationExperiment 2b X-Ray Diffraction* Optical Diffraction Experiments
* Experiment 2b X-Ray Diffraction* Adapted from Teaching General Chemistry: A Materials Science Companion by A. B. Ellis et al.: ACS, Washington, DC (1993). Introduction Inorganic chemists, physicists,
More informationPROCEDURES AND CRITERIA ANALYSIS OF OPTICAL BRIGHTENER ON COTTON SAMPLERS. March 11, Thomas Aley, PHG 179 President Ozark Underground Laboratory
PROCEDURES AND CRITERIA ANALYSIS OF OPTICAL BRIGHTENER ON COTTON SAMPLERS March 11, 2005 Thomas Aley, PHG 179 President Ozark Underground -1- PROCEDURES Introduction This document describes standard procedures
More informationSERVATION Focus Questions: What is a watershed? How do we manage it to make sure our water is clean and plentiful?
Thank you for participating in the Arizona Water Festival program! Our program assessment shows that students who experience the entire Water Festival unit, from pre-lessons to post-lessons, get far more
More informationEnergy Detective Grade: 6 8 Time: 1 class period
Energy Detective Grade: 6 8 Time: 1 class period Lesson #A1: What is Energy? Overview: This is an introductory activity for studying energy. Students will look for energy, collecting "energy evidence,"
More informationLesson: Carbon Footprint of Lightbulbs
Drexel-SDP GK-12 LESSON Lesson: Carbon Footprint of Lightbulbs Subject Area(s) Electrical engineering, environmental engineering Associated Unit Environments, module 4 Lesson Title Lesson: Carbon Footprint
More informationHow about some practice questions for TEST #2, Homer? WE STARTED WITH SOME CLICKER REVIEW QUESTIONS...
How about some practice questions for TEST #2, Homer? WE STARTED WITH SOME CLICKER REVIEW QUESTIONS.... Quickie CLICKER SELF-TEST REVIEW!!.... Channel 28 Q1 -The Goldilocks Problem refers to the question:
More informationFeedbacks of Ice and Clouds
Activity DEVELOP For Educator 45 Minutes Grades 7-12+ Ages 12+ Feedbacks of Ice and Clouds How do ice and clouds cool the Earth? For the complete activity with media resources, visit: http://education.nationalgeographic.com/education/activity/feedbacks-ice-and-clouds/
More informationConduction and Convection
Conduction and Convection Convection Currents Definition Convection is the transfer of heat in liquids and gases. The hotter the liquid/gas the particles move faster and spread out. This means the gas/liquid
More informationhigh energy high frequency low energy low frequency Reminder from last lecture 1
high energy high frequency low energy low frequency Reminder from last lecture 1 Reminder from last lecture. The temperature of the source determines the wavelength of the produced light, and so what part
More informationWhat is Hydrologic Optics? Optics Attentuation Inherent properties Scatter Absorption Apparent properties
1 of 7 3/22/2006 1:29 PM Water quality research Water quality Hydrologic optics Components of water quality SERC water research projects CISNet program What is Hydrologic Optics? Optics Attentuation Inherent
More informationActivity: Mystery Polymer
Drexel-SDP GK-12 ACTIVITY Activity: Mystery Polymer Subject Area(s) Environments, Engineering Associated Unit Environments, module 4 Associated Lesson Activity Title Grade Level 6 (3-7) N/A Activity Dependency
More informationTHE PAST, PRESENT, AND FUTURE OF LIGHTING
THE PAST, PRESENT, AND FUTURE OF LIGHTING WHY CARE ABOUT LIGHTING? Lighting Statistics 38% of industrial and commercial electricity use is for lighting. 10% to 20% of home electricity use is for lighting.
More informationHow do ice and snow help to regulate the overall energy balance on Earth?
Environmental Literacy Framework Earth s Albedo Focus Questions: How do ice and snow help to regulate the overall energy balance on Earth? What will the impact of climate change be on the Earth s ability
More informationB O O K. WRITING AND SIMPLIFYING EXPRESSIONS AIMS Education Foundation
INTERACTIVE B O O K WRITING AND SIMPLIFYING EXPRESSIONS 57 011 AIMS Education Foundation Developed and Published by AIMS Education Foundation This book contains materials developed by the AIMS Education
More informationCool Globes and Climate Change Miranda Peterson
Cool Globes and Climate Change Miranda Peterson INTRODUCTION This lesson plan will introduce high school science classes to the greenhouse effect and examine the connection between the greenhouse effect
More informationLab 1 Basics of Energy Production I
1 Lab 1 Basics of Energy Production I Relevant SOLs: PS.1a, PS.1b, PS.1d, PS.1k, PS.1m, PS.2e, PS.2f, PS.5a, PS.5c, PS.6a, PS.6b, PS.6c, PS.7a, PS.7b, PS.9c, 3.1h, 3.1j, 3.11a, 3.11b, 4.3d, 5.3a, 5.4c,
More informationGroup Size ( Divide the class into teams of four or five students each. )
Subject Area(s) Science & technology Associated Unit Engineering Associated Lesson wind lesson Activity Title wind turbines Grade Level 6 (5-7) Activity Dependency wind lesson Time Required 2 hour periods
More informationFeedbacks of Ice and Clouds
Your web browser (Safari 7) is out of date. For more security, comfort and Activitydevelop the best experience on this site: Update your browser Ignore Feedbacks of Ice and Clouds How do ice and clouds
More informationCard #1/24. Describe how thermal energy is passed on in terms of ions Using these ideas explain how a convection current occurs
Card #1/24 Card #2/24 Topic: Conduction Topic: Convection In what state of matter does conduction occur? In what states of matter does convection occur? Explain why it needs to be in this state? Define
More informationLAB National Science Teachers Association. Lab Handout. Introduction
Lab Handout Lab 16. Surface Materials and Temperature Change: How Does the Nature of the Surface Material Covering a Specific Location Affect Heating and Cooling Rates at That Location? Introduction Inner
More informationDay 3: Understanding the outdoors
Day 3: Understanding the outdoors We will teach the children why some things in nature happen and why it important to take care of it. How clean is that water? Materials: Daphnia with oil with detergent
More informationClassroom Tested Lesson
Classroom Tested Lesson Video Description Secrets of the Sequence, Show 124, Episode 2 A Green Light for Biology approximately 10 minutes viewing time This discovery known as Green Fluorescent Protein
More informationGlobal Warming and Sea Level Rise
MATERIALS SUITABLE FOR GRADES 1-8 This activity will show how increased temperatures will hasten the melting of ice in the environment, contributing to a rise in sea level and subsequent flooding of coastal
More informationClimate Change Connected Curriculum
Climate Change Connected Curriculum Climate change is happening, humans are causing it, and I think this is perhaps the most serious environmental issue facing us. - - - - -Bill Nye Climate Change across
More informationToday we re going to talk about job hazard analysis. Job hazard analysis, or JHA as it s often called, is an essential part of our safety program.
Today we re going to talk about job hazard analysis. Job hazard analysis, or JHA as it s often called, is an essential part of our safety program. Through JHA, we are able to identify workplace hazards
More informationPhysics Unit Physics P1
Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Science A Unit Physics P1 Physics Unit Physics P1 General Certificate of Secondary Education
More informationIntroduction to Energy Efficient Lighting ECEN 2060
Introduction to Energy Efficient Lighting ECEN 2060 US Residential & Commercial Energy Consumption 1 Energy losses during generation, transmission and distribution of electricity * DOE, EIA, Annual Energy
More informationUsing Models to Make Predictions
Activity APPLY For Educator 45 Minutes Grades 7-12+ Ages 12+ Using Models to Make Predictions How much do humans have to reduce greenhouse gas emissions to prevent major warming? For the complete activity
More information- Free resources for K-12 1/6
Lesson: What is Energy? Summary copyright With an introduction to the ideas of energy, students discuss specific types of energy and the practical sources of energy. Hands-on activities help them identify
More informationSolar and SODIS: Creating Clean Water for the World
Solar and SODIS: Creating Clean Water for the World AUTHOR: Jamie Repasky DESCRIPTION: According to Nobel Laureate Richard Smalley, the number one and two challenges for humanity are energy and clean water.
More informationPRE- VISIT POWERPOINT SCRIPT FOR TEACHERS TEP BRIGHT STUDENTS: THE CONSERVATION GENERATION
PRE- VISIT POWERPOINT SCRIPT FOR TEACHERS TEP BRIGHT STUDENTS: THE CONSERVATION GENERATION Slide 1 Intro Welcome to the Bright Students: The Conservation Generation pre- -visit PowerPoint presentation.
More informationLesson 7: Watt s in a Name(plate)?
Lesson 7: Watt s in a Name(plate)? Overview In this lesson, students determine how much electricity a particular device uses by reading electric nameplates and using Kill A Watt meters that monitor electrical
More informationVANDERBILT STUDENT VOLUNTEERS FOR SCIENCE Electrical Conductivity VINSE/VSVS Rural
VANDERBILT STUDENT VOLUNTEERS FOR SCIENCE http://studentorgs.vanderbilt.edu/vsvs Electrical Conductivity 2018-2019 VINSE/VSVS Rural (Adapted from Student Guide for Electric Snap Circuits by Elenco Electronic
More informationCut Your PPC Campaigns Down To Size
Cut Your PPC Campaigns Down To Size What if you could learn to trim your PPC campaigns down to a more manageable and efficient size? While simultaneously raising your conversion rates? Well, guess what?
More informationYear 7 Chemistry HW Questions
Year 7 Chemistry HW Questions 37 minutes 56 marks Page 1 of 15 Q1. Molly used a ph sensor to test different liquids. She dipped the probe of the sensor into each liquid and recorded the ph value in a table.
More informationWelcome to Logo 101 LOGO 101. Have fun! You ll learn to recognize these elements and how to use them properly.
Welcome to Logo 101 In this Tutorial you will learn about Corporate Identity and the many graphical elements commonly used to represent Corporate Identity. You ll learn to recognize these elements and
More informationMicrobiology Chapter 2 Laboratory Equipment and Procedures 2:1 The Light Microscope MICROSCOPE: any tool with a lens to magnify and observe tiny
Microbiology Chapter 2 Laboratory Equipment and Procedures 2:1 The Light Microscope MICROSCOPE: any tool with a lens to magnify and observe tiny details of specimens Micro tiny, small Scope to see SIMPLE
More informationFAQ on LED Lighting. Part 1: General Questions
October 2017 FAQ on LED Lighting With the phasing-out of incandescent lamps in many countries, the introduction of new LED based light sources and luminaires sometimes raises questions by the public on
More informationP1 Physics Essential Questions
P1 Physics Essential Questions Particles and Kinetic Theory Name. Solid, liquid and gas are three different states of matter. Describe the difference between the solid and gas states, in terms of the arrangement
More informationCALLING ALL HOUSEHOLDS!
CALLING ALL HOUSEHOLDS! WOULD YOU LIKE TO HELP ME SLIM DOWN? Ireland produces way more waste per person than European Average! By reducing, reusing, recycling and composting you can make a HUGE difference.
More informationActivity: Space Station Solar Panel Truss
Drexel-SDP GK-12 ACTIVITY Activity: Space Station Solar Panel Truss Subject Area(s) Earth and Space Associated Unit Astronomy, module 2 Associated Lesson Fabrication Lesson: Space Station Solar Panel Truss
More informationEnergy Makes It Happen
Energy Makes It Happen What is a Fun damental? Each Fun damental is designed to introduce your younger students to some of the basic ideas about one particular area of science. The activities in the Fun
More informationSee the small world Subject Area(s) Associated Unit: Associated Lesson: Activity Title: Image 1 ADA Description: Image file name: Source/Rights:
See the small world Subject Area(s) Chemistry, Life science, Physical Science, Science & Technology, measurements Associated Unit: None Associated Lesson: Activity Title: See the small world Image 1 ADA
More informationCOLLIN COLLEGE EPA COMPLIANCE TOOLKIT
COLLIN COLLEGE EPA COMPLIANCE TOOLKIT The Program Recently, the EPA has directed enforcement initiatives at colleges and universities and the result has been significant fines and penalties on schools
More informationThe Dynamic Density Bottle: A Make-and-Take, Guided Inquiry Activity on Density
Supporting Information for: The Dynamic Density Bottle: A Make-and-Take, Guided Inquiry Activity on Density Thomas S. Kuntzleman, Department of Chemistry, Spring Arbor University, Spring Arbor, MI Information
More informationWhen fossil fuels burn, they release gases into the atmosphere. Two products that result are acid
Chapter 15 Study Guide STUDY TIPS Read the chapter objectives. Look up any unfamiliar words. Read the questions below before you read the chapter. As you read the chapter, answer the following questions.
More informationQuestions 1 4 refer to the diagram of the earth s atmosphere shown above. 3. The section of the atmosphere responsible for our daily weather.
Unit 6 Practice Test Questions 1 4 refer to the diagram of the earth s atmosphere shown above 1. The ozone layer is found at this location. 2. The atmosphere is at its warmest point at this location. 3.
More information