GAUTENG DEPARTMENT OF EDUCATION SENIOR SECONDARY INTERVENTION PROGRAMME PHYSICAL SCIENCES GRADE: 10 SESSION: 17 (LEARNER NOTES)
|
|
- Dorcas Houston
- 6 years ago
- Views:
Transcription
1 CHEMICAL SYSTEMS - THE WATER CYCLE Learner Note: Examiners regularly comment that it is evident that the section on chemical systems is neglected. This lack of knowledge is carried forward to grade 11 and 12. It is crucial that this section is mastered. SECTION A: TYPICAL EXAM QUESTIONS Question 1: 20 minutes (Taken from MED Nov 2009) How does the cost of bottled water, both short term and long term, compare with other water purification options? Bottled water is simple water from some source that a company has placed in a bottle for resale. Bottled water can have minimal or no processing (natural spring or mineral water) or it can be completely filtered and demineralised to nearly pure water and then have minerals added back to make it taste better. Keep it clean According to the university of Illinois If you choose bottled water after careful investigation, you have to be faithful in maintaining the hygiene of your bottled water or you may increase the exposure to bacteria. Bacteria grow best in warm moist areas, like the threaded cap of an unrefrigerated bottle of water. They will begin to grow as a soon as you break the seal. If ingested these bacteria can cause gastrointestinal problems and other health risks. The key is maintaining the cleanliness of your bottles and storing them properly. Follow these hints: 1. Store the bottle in the refrigerator at a temperature above freezing but less than 4 C 2. Wipe the seal with a clean cloth after each use 3. Avoid any type of build up in the cap 4. If your bottle is refillable, make sure it is well cleaned and rinsed before refilling. If possible recycle the bottle and obtain a fresh, sterile, sealed bottle. 1.1 List three advantages and three disadvantages of bottled water (6) (From the answer it must be clear why it is an advantage give an example of each advantage / disadvantage). 1.2 What would the properties, (microscopic and macroscopic) be between zero and 4 C (4) (Microscopic molecules and between molecules, invisible; macroscopic visible to the naked eye). Page 1 of 8
2 Learner Note: Use the graph of boiling and melting points to explain what happens at each stage of the temperature change. Hydrogen bonding is not the bond within the molecule between the hydrogen and oxygen atom, it is the name given to the force that keeps water molecules attracted to each other. 1.3 What is pure water? (2) (What is the definition of a pure substance?) 1.4 Water has very specific molecular properties. It takes 4200 J of heat to raise the temperature of 1 kg water by 1 C. How much heat is required to raise the temperature of 75 kg of water to by 1 C? (3) (15) Question 2: 10 minutes Give one term for each of the following descriptions: (These are useful terms to memorise as part of theory and terminology, know these!) 2.1 Water evaporates into the atmosphere from large areas on the earth s surface (1) 2.2 Water evaporates from leaves of plants (1) 2.3 Water cools down to form drops in the atmosphere (1) 2.4 Water drops fall back to the ground as rain, hail or snow (1) 2.5 Water seeps through the ground (1) 2.6 The energy that is transferred form a body of higher temperature to a body of lower temperature (1) 2.7 The amount of heat required to raise the temperature of 1 kg of a substance by 1 C (1) 2.8 The heat absorbed or released when water changes phases (1) 2.9 Amount of heat required for evaporation (1) 2.10 Amount of heat required for melting (1) (10) Learner Note: Regular repetition of the terminology will improve the understanding and correct use of the terms in answering questions. Page 2 of 8
3 SECTION B: SOLUTIONS AND HINTS Question Advantages: It can be used as an emergency water source in case the primary water source fails or is contaminated It is a convenient source of safe water if outside of homeall water sources are not safe It does not contain chlorine and may contain a mix of minerals may taste better than untreated tap water Most bottled water contains fewer contaminants than untreated tap waterpeople will be protected against water bourne diseases (Again no marks are given for vague answers, quote an example of where bottled water is used and state why it is an advantage in the given situation. The advantage must be clear) Disadvantages: Cost very expensive to buy more than tap water Using bottled water require the transport and moving of containers and bottles of water It has an environmental impact producing bottles uses resources, unless recycled cause waste and a disposal problem Transporting bottles of water uses resources and causes further wear and tear on our roads 1.2 Macroscopic clear colourless appearance, melts at 0 C, is more dense at 4 than at 0 C. (Learn the melting and boiling-point of water and what the significance of each is at 0 C it melts or solidifies, at 100 C it boils or condensates) Microscopic Water molecules have hydrogen bonds as intermolecular forces between the molecules, hydrogen bonds are relatively strong (Learn that the intermolecular force between water molecules is H-bonding, it is applicable in many sections in the chemistry section) 1.3 Water is made of water molecules, no other substances are present 1.4 Heat required = 75 x 4200 = J Page 3 of 8
4 Question 2: 2.1 Evaporation 2.2 Transpiration 2.3 Condensation 2.4 Precipitation 2.5 Percolation 2.6 Heat 2.7 Specific heat capacity 2.8 Latent heat 2.9 Heat of vaporisation 2.10 Heat of fusion Page 4 of 8
5 SECTION C: ADDITIONAL CONTENT NOTES CHEMICAL SYSTEMS - THE WATER CYCLE The amount of water on earth stays more or less the same. How is it then possible to have water shortages? Not all the water molecules on earth are available for domestic use because water is found in three different phases namely: solid (ice), liquid (water), and gas (water vapour). To explain the water cycle we shall refer to the sketch from the internet. 2. THE WATER CYCLE The water cycle has no starting or ending point. During the water cycle the water constantly changes phase. To get the water to change from a liquid to water vapour (a gas), the sun supplies the energy. The process that takes place is called evaporation. It is caused when the water molecules gains enough energy from the sun to escape from the liquid into the air. During evaporation the potential energy of the particles increases and the kinetic energy of the particles decreases. If during evaporation no energy is supplied from outside, the temperature decreases. To keep evaporation going, energy must be supplied from outside. It also happens that snow and ice sublimise to water vapour. Sublimation is when a solid change directly to a gas. The water vapour and the water which is transpired form plants and also evaporated from the soil will be taken away by the rising air current. The water vapour in the air cools down and condensate to form clouds when the water accumulates around dust particles. The water falls back to the earth in the form of rain, hail and snow. This process is called precipitation. Page 5 of 8
6 Most of the precipitation is absorbed by the ground. The remainder of the precipitate (rain) runs of on the surface to rivers and back to the sea where it will evaporate again. The water that is absorbed by the ground will then be absorbed by the roots of plants. The water will then be released by the plant through transpiration and the droplets on the leaves will evaporate to repeat the cycle. The rest of the absorbed water will accumulate in underground lakes and rivers. This water will end up in rivers or will be absorbed by the roots of plants and will be back in circulation. Water is stored in various places on earth. In the oceans In glaciers and ice caps Underground Lakes, dams, rivers, inland seas Atmospheric water. PROCESSES OF THE WATER CYCLE: Evaporation: water evaporates from the surface of pools, dams, rivers, lakes and oceans. This process accounts for most of the atmospheric water in the world. Condensation: This is the opposite process to evaporation. Particles of water accumulate to form tiny water droplets during condensation as water changes state from its vapour into its liquid. Water condenses when the temperature decreases. The water condenses around dust particles to form clouds. Precipitation: When it rains the clouds drop water on the earth by means of precipitation. The amount of precipitation varies from place to place. The amount of rivers and water on the earth in a specific area determine the amount of evaporation and precipitation. Surface Run-off: Melted snow, hail and rain run off along the ground to meet with rivers and streams. Subsurface Run-off / percolation: The water seeps through the ground to underground rivers. This subsurface run-off is vital for plant life. Transpiration: Plants transpire through holes, called stomata, which are found on the under surface of leaves. PROPERTIES OF WATER. Most of the water found is in the liquid phase. Very strong intermolecular forces hold the water molecules close to one another as they slip and slide over each other in the water. Page 6 of 8
7 The density of water is the highest at 4 C. At this temperature the molecules move very slowly and the force of attraction increases. The moment it freezes the bonds enclosed air and the density decreases to such an extent that the ice floats on water. Energy is needed to change the phases of water. The molecules will gain energy while the temperature increases. The moment the molecules have enough energy to escape from their current phase, all the added energy is used to change the phase and no increase in temperature takes place. The energy needed to increase the temperature is called specific heat. The energy needed to change a phase is called latent heat. Water is a polar molecule; it means that the electron cloud of the covalent bond will be closer to the oxygen than the hydrogen because oxygen is more electronegative. The strong bonds between the water molecules (not the hydrogens and oxygen in a single molecule) is called hydrogen bonds. This bonds cause a high melting and boiling point because this bond is the strongest non-metallic intermolecular force. Page 7 of 8
8 SECTION D: HOMEWORK Learner Note: These questions are important to show the application of the terminology and concepts dealt with in this section. Attempt all questions after learning the terminology. Question1: 15 minutes Use water as an example to explain each of the following terms give one example where the term applies in everyday life in terms of an advantage or disadvantage 1.1 Cohesion (3) 1.2 Adhesion (3) 1.3 Hydrophilic (3) 1.4 Hydrophobic (3) 1.5 Meniscus (3) (15) Question 2: 5 minutes Capillary action is of great importance in the water cycle and it also has disadvantages. Discuss this statement discuss 3 points (6) (6) SECTION E: SOLUTIONS TO SESSION 16 HOMEWORK Question V 1 = V 2 + V 3 Sum of the voltmeters along a path equals potential difference across cells Resistors in series are potential dividers V 2 = V 3 = V 4 Potential difference over branches in parallel is the same, Potential difference over any resistors in parallel to each other is the same 1.2 A 1 = A 4 Current in the series circuit is the same A 2 = A 3 A 4 Resistors are current dividers, branches have identical resistance so equal current in branch A 2 + A 3 = A 4 = A 1 Resistors in parallel are current dividers The SSIP is supported by Page 8 of 8
Unit 5 Lesson 1 What Is the Water Cycle? Copyright Houghton Mifflin Harcourt Publishing Company
Water on the Move warm up 1 Water on the Move About three-fourths of Earth s surface is covered by water. Water on the Move Video!!! Water on the Move Water moves between Earth s surface and the atmosphere
More informationThe Returning Raindrop
Did you know that some of the water molecules we drink today may have been around when dinosaurs walked the Earth thousands of years ago? Water is continuously recycling in a process called the hydrologic
More informationJourney of a Raindrop
Journey of a Raindrop Grade Level Second to Fourth Duration Prep time: 15 minutes Activity time: 30 to 60 minutes Materials 10 different colored pony beads (from craft stores) 10 large pieces of paper
More informationThe water cycle. By NASA.gov, adapted by Newsela staff on Word Count 664 Level 810L
The water cycle By NASA.gov, adapted by Newsela staff on 12.15.16 Word Count 664 Level 810L TOP: Water is the only common substance that can exist naturally as a gas, liquid or solid at the relatively
More informationUnit 2: Weather Dynamics Chapter 1: Hydrological Cycle
UNIT 2 Chapter 1: Inquiring about Weather Unit 2: Weather Dynamics Chapter 1: Hydrological Cycle Science 10 Mrs. Purba Importance of H 2 O From the beginning of time when water first appeared, it has been
More informationTHE IMPORTANCE OF WATER
THE IMPORTANCE OF WATER 2/3rds of the Earth s surface is covered in. water Earth s aquatic ecosystems contain biomass more (living mass) than its terrestrial ecosystems. Phytoplankton are microscopic producers
More informationWater can have three states
Water Cycle Goals 1. Know the states of water and how / why they change from one state to another 2. Describe the Water Cycle using specific and precise vocabulary when describing each part of the Water
More informationWater cycles through ecosystems.
Water cycles through ecosystems. Water is stored on Earth s surface in lakes, rivers, and oceans. Water is found underground, filling the spaces between soil particles and cracks in rocks. Large amounts
More information3rd GRADE MINIMUM CONTENTS UDI 1: WATER (3)
3rd GRADE MINIMUM CONTENTS UDI 1: WATER (3) THE PROPERTIES OF WATER Water has different properties: Water has no taste, colour or smell. Water exists in three states: solid, liquid and gas. Water is a
More informationWhere did the water you drank today come from? Summary With a roll of the dice, you can simulate the movement of water within the water cycle.
The Water Cycle Where did the water you drank today come from? Summary With a roll of the dice, you can simulate the movement of water within the water cycle. Objectives Students will learn the complex
More informationAir & Water Lesson 2. Chapter 6 Conserving Our Resources
Air & Water Lesson 2 Chapter 6 Conserving Our Resources Objectives Summarize the importance of air. Describe the water cycle. Main Idea Living things use air and water to carry out their life processes.
More informationThe water cycle. What is the water cycle? Fact file 2
Fact file 2 The water cycle The water we use at home and at work comes from the natural environment. It is being recycled all the time in what is called the water cycle. What is the water cycle? Water
More informationWater: A Valuable, Yet Limited Resource
Water: A Valuable, Yet Limited Resource Subject: Science Target Grades 4-5 Duration: One class period Materials per class 3 100-ml graduated cylinders container of water (10-ml/student) Water Cycle with
More informationTerm Info Picture. The process by which liquid water changes to gas. The process by which water vapor changes in to liquid water.
Water Cycle S6E3. Obtain, evaluate and communicate information to recognize the significant role of water in Earth s processes. A. Ask questions to determine where water is located on Earth s surface (oceans,
More informationWATER AND THE HYDROLOGIC CYCLE
WATER AND THE HYDROLOGIC CYCLE Summary Water is essential for the support of life and can be considered as a fundamental environmental good. Water is needed to support human habitation, grow crops and
More informationMatter and Energy in the Environment
CHAPTER 20 LESSON 2 Key Concept How does matter move in ecosystems? Matter and Energy in the Environment Cycles of Matter What do you think? Read the two statements below and decide whether you agree or
More informationWhat is Purified Water?
What is Purified Water? The majority of the human body is comprised of water and human beings can live only a very short time without water. Water is a chemical substance that is essential to all known
More informationBasics Course. Montana. Introduction to Drinking Water Systems. for small public drinking water systems serving less than 3,300 people
Basics Course for small public drinking water systems serving less than 3,300 people Montana Montana Basics Course for Small Public Drinking Water Systems -1 Introduction to Drinking Water Systems Welcome
More informationCycles of Ma,er. Lesson Overview. Lesson Overview. 3.4 Cycles of Matter
Lesson Overview Cycles of Ma,er Lesson Overview 3.4 Cycles of Matter THINK ABOUT IT A handful of elements combine to form the building blocks of all known organisms. Organisms cannot manufacture these
More informationArctic Sea Ice. Background Information
Arctic Sea Ice Objectives 1. Students will construct graphs of the extent of sea ice over time. 2. Students will use technology to analyze data and draw conclusions about natural phenomena in the Arctic
More informationWater Travels Grade 5
TEACHING LEARNING COLLABORATIVE (TLC) EARTH SCIENCE Water Travels Grade 5 Created by: Shane Lee (Pomo Elementary School); Nola Montgomery (Clearlake Community School); Lori Kincaid (Lower Lake Elementary
More informationFIFTH GRADE WATER 1 WEEK LESSON PLANS AND ACTIVITIES
FIFTH GRADE WATER 1 WEEK LESSON PLANS AND ACTIVITIES WATER CYCLE OVERVIEW OF FIFTH GRADE WATER WEEK 1. PRE: Analyzing why water is important. LAB: Comparing the density of water to that of other liquids.
More information3.F.1 The Water Cycle: Part 1 Students will learn to demonstrate the various phases of the water cycle
3.F.1 The Water Cycle: Part 1 Students will learn to demonstrate the various phases of the water cycle Grade Level 3 Sessions Seasonality Instructional Mode(s) Team Size WPS Benchmarks MA Frameworks Key
More informationIntroduction to Drinking Water Systems. Indiana Basics Course for Small Public Drinking Water Systems -1
Introduction to Drinking Water Systems Indiana Basics Course for Small Public Drinking Water Systems -1 Welcome to Lesson 1: Introduction to Drinking Water Systems! To operate a public water system, you
More informationEpisode 608: Latent heat
Episode 608: Latent heat Energy is involved in changes of phase, even though there is no change of temperature. Summary Discussion: Defining specific latent heat. (10 minutes) Demonstration: Boiling water.
More informationLecture 1: Hydrologic cycle
1-1 GEOG415 Lecture 1: Hydrologic cycle Hydrologic cycle is ultimately driven by solar radiation, which evaporates water from the ocean and lift it up in the atmosphere. Dunne & Leopold, 1978, Fig. 1-1
More informationNUTRIENT CYCLES (How are nutrients recycled through ecosystems?)
NUTRIENT CYCLES (How are nutrients recycled through ecosystems?) Why? We have learned the importance of recycling our trash. It allows us to use something again for another purpose and prevents the loss
More informationWhere s the Water?: Acting Out Science Cycles
Where s the Water?: Acting Out Science Cycles SEASONS: SUBJECTS: EXT. SUBJECT: X MATERIALS For each student: water cycle card, water cycle picture, pencil. For class: glass of water, Where Does the Water
More information5-ESS2-1 Develop a model using an example to describe ways the geosphere, biosphere, hydrosphere, and/or atmosphere interact.
The Water Cycle Lesson Overview Water is necessary to support and maintain life on Earth. It is the key factor in the interactions between the Earth s major systems: the atmosphere (air), the biosphere
More informationClass IX Chapter 14 Natural Resources Science
Question 1: How is our atmosphere different from the atmospheres on Venus and Mars? Earth s atmosphere is different from those of Venus and Mars. This difference lies essentially in their compositions.
More informationEarth s Water Reservoirs
Earth s Water Reservoirs Introduction What do you think of when you hear the word reservoir? Living in Utah, most of us will think of a man made lake that stores needed water. Many of us have been swimming,
More informationEcosystems Section 1 What Is an Ecosystem? Objectives Distinguish Describe Sequence Interactions of Organisms and Their Environment Ecology Habitat
Name Period Ecosystems Section 1 What Is an Ecosystem? Objectives Distinguish an ecosystem from a community. Describe the diversity of a representative ecosystem. Sequence the process of succession. Interactions
More informationClosed Systems A closed system is a system in which energy, but not matter is exchanged with the surroundings.
2.2 Notes Objectives Compare an open system with a closed system. List the characteristics of Earth s four major spheres. Identify the two main sources of energy in the Earth system. Identify four processes
More informationWrite It! Station Directions
Write It! Station Directions It is recommended that you have completed at least two of the following stations before working at this station. -Read It! -Explore It! -Watch It! -Research It! Answer each
More informationEnvironmental Principles & Concepts (EP&C)/COSA Correlation of 4 th - 7 th Grade CA Science Standards
Environmental Principles & Concepts (EP&C)/COSA Correlation of 4 th - 7 th Grade CA Science Standards For ROSS Certifications at least nine of the 14 science standards are addressed during a 5-day program,
More informationChapter Two: Cycles of Matter (pages 32-65)
Biology 20 Chapter 2.1_keyed Chapter Two: Cycles of Matter (pages 32-65) 2.1 The Role of Water in the Cycles of Matter (pages 34 40) Due to its ability to form hydrogen bonds, water has several unique
More informationCan you identify the properties and physical states of water?
Unit 1 What is the Water Cycle? Activity A Can you identify the properties and physical states of water? Introduction Water is a substance with which students may believe they are very familiar. This activity
More informationUnit 3 Lesson 1 Earth s Support of Life. Copyright Houghton Mifflin Harcourt Publishing Company
Living It Up What do living things need to survive? Earth is covered in living things. The basic necessities of life are air, water, a source of energy, and a habitat to live in. How do Earth and the sun
More informationChapter Introduction. Matter. Ecosystems. Chapter Wrap-Up
Chapter Introduction Lesson 1 Lesson 2 Lesson 3 Abiotic Factors Cycles of Matter Chapter Wrap-Up Energy in Ecosystems How do living things and the nonliving parts of the environment interact? What do you
More informationCONNECTICUT SCIENCE FRAMEWORK. Grade 6
CONNECTICUT SCIENCE FRAMEWORK Grade 6 Core Themes, Content Standards and Expected Performances Properties of Matter How does the structure of matter affect the properties and uses of materials? 6.1 - Materials
More information6. In this temperature time graph for the heating of H 2O at a constant rate, the segment DE represents the
1. Which of the following contains particles with the least freedom of motion? A) CO 2( ) B) HCl(aq) C) F 2(g) D) MgBr 2(s) E) C 6H 12O 6(aq) 2. During boiling, the temperature of a pure liquid substance
More informationCycles of Matter. Slide 1 of 33. End Show. Copyright Pearson Prentice Hall
Cycles of Matter 1 of 33 The purpose of this lesson is to learn the water, carbon, nitrogen, and phosphorus cycles. This PowerPoint will provide most of the required information you need to accomplish
More informationSeawater Chemistry 10/5/2010. Unique Properties of Fresh Water CHAPTER 5
Seawater Chemistry Chapter 5: Unique properties of fresh water Origin of Seawater??? Chapter 6: The 6 major constituents, trace elements Salinity, normal, hypersaline, brackish Changes in surface salinity
More informationOUR OCEANS FACTSHEET. Ocean life
The ocean makes our planet a wonderful place to live. It gives us more than half of the oxygen we breathe. It regulates the climate, absorbs a quarter of the carbon that we put into the atmosphere every
More informationNCERT solution for Natural Resources
1 NCERT solution for Natural Resources Question 1 How is our atmosphere different from the atmospheres on Venus and Mars? Earth's atmosphere is a mixture of nitrogen (79%), oxygen (20%), and a small fraction
More informationBiosphere & Biogeochemical Cycles
Biosphere & Biogeochemical Cycles Biosphere Sphere of living organisms All the regions of the earth and its atmosphere in which living organisms are found or can live. Interacts with all the other spheres
More informationì<(sk$m)=bdicad< +^-Ä-U-Ä-U
Earth Science by Kim Fields Genre Comprehension Skill Text Features Science Content Nonfiction Cause and Effect Captions Diagram Call Outs Glossary Water Scott Foresman Science 3.5 ì
More information3 3 Cycles of Matter. EOC Review
EOC Review A freshwater plant is placed in a salt marsh. Predict the direction in which water will move across the plant s cell wall, and the effect of that movement on the plant. a. Water would move out
More informationIn this activity, we are going to expand our picture of the water cycle.
WATER CYCLE Narrative BIG IDEAS: Water is constantly changing form and moving through the earth system. Water changes states as it moves through the water cycle by evaporation, condensation, precipitation,
More information5-PS1-1 Matter and Its Interactions. Disciplinary Core Ideas
defining problems (for Modeling in 3 5 builds on K 2 building and revising simple models and using models to represent events and design solutions. Develop a model to describe phenomena. Using mathematics
More informationPlanetary Energy Balance
Planetary Energy Balance Overview of Planetary Energy Balance Energy coming into the Earth s atmosphere from the sun is always in balance with the energy leaving Earth s atmosphere going back out into
More informationT8-1 [166 marks] Which energy resource is renewable? A. Natural gas B. Uranium C. Biogas D. Coal
T8-1 [166 marks] 1. Which energy resource is renewable? A. Natural gas B. Uranium C. Biogas D. Coal 2. For a black-body at absolute temperature T the power emitted per unit area is P. What is the power
More informationì<(sk$m)=cdegfd< +^-Ä-U-Ä-U
Standards Preview Earth Sciences Standard Set 3. Earth Sciences 3. Water on Earth moves between the oceans and land through the processes of evaporation and condensation. As a basis for understanding this
More informationComposition and Energy AOSC 200 Tim Canty
Composition and Energy AOSC 200 Tim Canty Class Web Site: http://www.atmos.umd.edu/~tcanty/aosc200 Topics for today: Atmospheric composition cont. Energy transfer Lecture 03 Sept 5 2017 1 Today s Weather
More informationEnvironmental Science Energy Flow in Ecosystems
Environmental Science Energy Flow in Ecosystems Name: Date: 1. Match the following fill in the blanks 1. Biodegration 2. Biomass 3. Consumer 4. Decomposers 5.Decomposition 6. Energy Flow 7. Food Chains
More informationPhysics 171, Physics and Society Quiz 1 1pm Thurs Sept 14, 2017 Each question has one correct answer, or none (choose e on the clicker). 1.
Physics 171, Physics and Society Quiz 1 1pm Thurs Sept 14, 2017 Each question has one correct answer, or none (choose e on the clicker). 1. Maria is riding her bicycle on a flat road at 10 mi/hr. Then
More informationEast Maui Watershed Partnership Adapted from Utah State University and University of Wisconsin Ground Water Project Ages 7 th -Adult
INTRODUCTION What is groundwater? Water contained in saturated soil and rock materials below the surface of the earth. It is not NEW water, but is recycled water through the hydraulic cycle. The source
More informationPHASE CHANGES. Time Temperature Observations. Name(s)
3 5 PHASE CHANGES PHASE CHANGES Name(s) The activities presented here focus on the energy changes that occur in substances undergoing a phase change. The first activity will take the most time to complete.
More informationHow is the atmosphere different from outer space? a mixture of gases that surrounds the Earth
Chapter 15 Atmosphere Section 1 Objectives Describe the composition of Earth's atmosphere. Explain why air pressure changes with altitude. Explain how air temperature changes with atmospheric composition.
More informationSignificance of Water Observation Lab
Significance of Water Observation Lab It has been said that the chemistry of life is water chemistry. Because of its chemical properties, water is the medium in which most of life s chemical reactions
More information5-PS1-1 Matter and Its Interactions
5-PS1-1 Matter and Its Interactions 5-PS1-1. Develop a model to describe that matter is made of particles too small to be seen. [Clarification Statement: Examples of evidence supporting a model could include
More informationAn easy-to-follow planning strategy Do-Talk-Do provides the structure for an integrated unit on the water cycle for fifth-grade students.
An easy-to-follow planning strategy Do-Talk-Do provides the structure for an integrated unit on the water cycle for fifth-grade students. By Julie Vowell and Marianne Phillips 30 Science and Children id
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 informationEarth Science Chapter 6 Section 1 Review
Name: Class: Date: Earth Science Chapter 6 Section 1 Review Multiple Choice Identify the choice that best completes the statement or answers the question. 1. What process is illustrated by the arrows labeled
More informationName Class Date. In the space provided, write the letter of the description that best matches the term or phrase.
Skills Worksheet Directed Reading Section: What Is an Ecosystem? In the space provided, write the letter of the description that best matches the term or phrase. 1. ecology 2. habitat 3. community 4. ecosystem
More informationPractical Limnology: A Primer Series by John Hains Clemson University Chapter 1
Practical Limnology: A Primer Series by John Hains Clemson University Chapter 1 Introduction: In this series, I will present topics in the field of limnology that are important to water quality, especially
More informationChapter 2. Table of Contents. Section 1 Organisms and Their Releationships. Section 2 Flow of Energy in an Ecosystem. Section 3 Cycling of Matter
Ecosystems Table of Contents Section 1 Organisms and Their Releationships Section 2 Flow of Energy in an Ecosystem Section 3 Cycling of Matter Section 1 Organisms and Their Releationships Interactions
More informationOPERATING INSTRUCTIONS
Water Sampler # 15010 OPERATING INSTRUCTIONS Purpose: Contents: For the collection of water samples at varying depths or distances away from a shoreline. One (1) Assembled Water Sampler One (1) Cord (15
More informationEcology: Part 2. Biology Mrs. Bradbury
Ecology: Part 2 Biology Mrs. Bradbury Model 1: Food Chains Food Chain simple model showing the movement of matter and energy through ecosystems. Autotrophs Heterotrophs Decomposers Arrows show energy transfer
More informationWhat is Ecology? The study of the interactions between organisms and the living (biotic) and nonliving (abiotic) components of their environment.
Chapter 18 What is Ecology? The study of the interactions between organisms and the living (biotic) and nonliving (abiotic) components of their environment. What is Biodiversity? Biodiversity is the sum
More informationPhysics 171, Physics and Society Quiz 1 1pm Thurs Sept 14, 2017 Each question has one correct answer, or none (choose e on the clicker). 1.
Quiz 1 1pm Thurs Sept 14, 2017 Each question has one correct answer, or none (choose e on the clicker). 1. Maria is riding her bicycle on a flat road at 10 mi/hr. Then she squeezes the brakes and comes
More informationA MYSTERY DOWN UNDER!
A MYSTERY DOWN UNDER! Objectives: The student will be able to: Define appropriate groundwater terms; Explain where groundwater is found; Identify sources of groundwater pollution and possible solutions
More informationTemperature: Air vs. Water vs. More Water
Temperature: Air vs. Water vs. More Water Temperature Adapted from: A Change in the Weather? in Living in Water. National Aquarium in Baltimore, 1997. Grade Level: basic Duration: 1 class Setting: classroom
More informationIntroduction. Welcome to the Belgium Study Abroad Program. Courses:
Introduction Welcome to the Belgium Study Abroad Program Courses: AGSM 335: Soil and Water Management BAEN 460: Principals of Environmental Hydrology BAEN 460 / AGSM 335 Combined lecture and HW sessions
More informationWATER. Name Date. Survey/Posttest
WATER Date 1. What happens to the level of the water in the straw when the water in the bottle is heated? A. The water level goes down. B. The water level stays the same. C. The water level goes up. Why
More informationCLIMATE CHANGE AND ACID RAIN. Mr. Banks 7 th Grade Science
CLIMATE CHANGE AND ACID RAIN Mr. Banks 7 th Grade Science COMPOSITION OF AIR? COMPOSITION OF AIR? 78% Nitrogen 21% Oxygen 0.93% Argon and other noble gases 0.04% carbon dioxide Variable amounts of water
More informationGreen Chemistry Five ways in which the Chemical industry can become Greener Changing to renewable sources Use of alternatives to hazardous chemicals
Green Chemistry Green Chemistry refers to the processes in the chemical industry that are being reinvented to make them more sustainable. The term sustain means to keep going. If we use resources faster
More informationRenewable Energy. Visible light. Cool air. Warm air. Condensation. Precipitation. Evaporation
Renewable Energy All renewable energy sources derive from the Sun. The Sun provides the energy that drives our weather systems and water cycle. It is the prime source of all energy on Earth and it is essential
More informationaeration: to expose to circulating air; adds oxygen to the water and allows gases trapped in the water to escape; the first step in water treatment.
WATER WORKS OBJECTIVES The student will do the following: 1. Demonstrate the process that water treatment plants use to purify water for drinking by conducting a water purification experiment. 2. Describe
More informationIntroduction to hydrology and the water balance
Introduction to hydrology and the water balance The science of hydrology The science that describes and predicts the occurrence, circulation and distribution of the earth s water. There are two principal
More informationAlgaculture & Biofuels: Exploration Experiments with Algae
Algaculture & Biofuels: Exploration Experiments with Algae Objective: 1. Students will be able to identify the resources algae need to survive and grow. o Students will be able to describe how algae responds
More informationGlossary of Freeze Drying Terms
Glossary of Freeze Drying Terms PRECISION FREEZE DRYERS MADE IN THE USA Laboratory Pharmaceutical Industrial Benchtop Floor Models For Clinical, Production & General Use Amorphous Amorphous material usually
More informationyk4lm (1:26) vd_90 (4:37)
Properties of Water Video Notes http://www.youtube.com/watch?v=2vfld5 yk4lm (1:26) http://www.youtube.com/watch?v=ivu4nl vd_90 (4:37) https://www.youtube.com/watch?v=0ens nj4zfz8#t=4.4600086 (4:58) new
More informationCycles in the Biosphere MiniLab: Test for Nitrates Assessment. Essential Questions. Review Vocabulary. Reading Preview
Cycles in the Biosphere MiniLab: Test for Nitrates Assessment 11 Reading Preview Essential Questions How do nutrients move through biotic and abiotic parts of an ecosystem? Why are nutrients important
More informationChapter 11: Atmosphere
To get you thinking This is our atmosphere. All life on Earth exists within this tiny protective blanket. Why is the atmosphere important to us? What do you think it does for us? Chapter 11: Atmosphere
More information3. WATER 3.1 WATER, WATER EVERYWHERE
3.1 WATER, WATER EVERYWHERE 3. WATER The picture on the right shows what the Earth looks like from space. Can you see the continent of Africa? About 70% of the surface is covered with water. Most of the
More informationName Date Class. This section describes Earth s atmosphere, or the layer of gases that surrounds the planet.
The Atmosphere Name Date Class The Atmosphere Guided Reading and Study The Air Around You This section describes Earth s atmosphere, or the layer of gases that surrounds the planet. Use Target Reading
More informationWeek 3 Lesson 2. Desalination. 3.2: Desalination. Starter activities
Week 3 Lesson 2 Desalination These activities should take about 1 ½ lessons. Aim: To show how fresh water can be obtained from salt water and how this process happens in the natural world. Keywords: aquifer,
More informationChapter 19: Global Change
1 Summary Of the Case Study Polar Bear population in the Antarctic going down because temperatures are going up and melting the caps. Polar bears are losing their habitat, they also can t get their food
More informationCycles of Matter CHAPTER. Chapter Concepts. 32 MHR Unit 1 Energy and Matter Exchange in the Biosphere
CHAPTER 2 Cycles of Matter Chapter Concepts 2.1 The Role of Water in Cycles of Matter There is a finite amount of water, which is re-used through the hydrologic cycle. Water is a universal solvent of polar
More informationEarth as a System. Chapter 2. Table of Contents. Section 1 Earth: A Unique Planet. Section 2 Energy in the Earth System.
Earth as a System Table of Contents Section 1 Earth: A Unique Planet Section 2 Energy in the Earth System Section 3 Ecology Section 1 Earth: A Unique Planet Objectives Describe the size and shape of Earth.
More informationChapter 2 ENERGY, ENERGY TRANSFER, AND GENERAL ENERGY ANALYSIS
Thermodynamics: An Engineering Approach Seventh Edition Yunus A. Cengel, Michael A. Boles McGraw-Hill, 2011 Chapter 2 ENERGY, ENERGY TRANSFER, AND GENERAL ENERGY ANALYSIS Copyright The McGraw-Hill Companies,
More informationChanges to the Atmosphere
Changes to the Atmosphere 49 minutes 49 marks Page of 24 Q. The amount of carbon dioxide in the Earth s atmosphere has changed since the Earth was formed. The amount of carbon dioxide continues to change
More informationPort St. Lucie Utility Systems
Port St. Lucie Utility Systems Welcome to Mikey's wonderful world of water and wastewater! He is one of the friendly bacteria, or microorganisms, who lives in our wastewater treatment plant and feasts
More informationChapter 12: Intermolecular Forces and Liquids and Solids
1. Which one of the following substances is expected to have the highest boiling point? A) Br 2 B) Cl 2 C) F 2 D) I 2 3. Which one of the following substances is expected to have the highest boiling point?
More informationOUR FORESTS, OUR LIFE
OUR FORESTS, OUR LIFE Asia/Pacific Cultural Centre for UNESCO (ACCU) LET'S GO INTO A FOREST! A forest gives us a lot of benefits and happiness in our daily lives. I want to know more about the forest.
More informationTHE WATER CYCLE IN GREATER VICTORIA
THE WATER CYCLE IN GREATER VICTORIA KEY CONCEPTS THE GREATER VICTORIA DRINKING WATER SUPPLY SYSTEM IS DEPENDENT ON ANNUAL PRECIPITATION, WHICH FALLS MOSTLY AS RAIN. RESPONSIBILITY FOR WATER IS EVERYONE
More informationGC2: Components of the Earth System Working Together
Global Connections: Earth Systems at the Global Scale GC2: Components of the Earth System Working Together Purpose To develop familiarity with interactions among the major components of the Earth system
More informationHYDROGEOLOGY (GEO 451) جيولوجيا المياه. Dr. MOHAMED EL ALFY.
HYDROGEOLOGY (GEO 451) جيولوجيا المياه )جيو 451 ( Dr. MOHAMED EL ALFY E-mail: melalfy@ksu.edu.sa MARKING SCHEME Weekly Assignments 5% Midterm Examination 5% Practical Examination 20% Final Examination
More informationSignificance of Water Observation Lab
Significance of Water Observation Lab It has been said that the chemistry of life is water chemistry. Because of its chemical properties, water is the medium in which most of life s chemical reactions
More information