Earth s Surface: Spheres & Cycles

Transcription

1 Please do the Audio Setup Wizard! Is anyone there? 11/5/12 Science Class Connect with Mrs. McFarland & Mr. Gluckin Earth s Surface: Spheres & Cycles Ohio Academic Content Standards Earth and Space Sciences The Universe 9. Describe the interior structure of Earth and the Earth s crust as divided into tectonic plates riding on top of the slow moving currents of magma in the mantle. 11. Use models to analyze the size and shape of Earth, its surface and its interior (e.g. globes, topographic maps and satellite images). The below corresponding Study Island lesson is due by 4pm on Thursday: SI 2e Student Centered Objectives I will be able to correctly label the stages of the water cycle. I will be able identify the different spheres that are found on Earth. I will understand cyclical nature of the cycles. I will learn a new writing strategy for answering short answer questions. Today s Class Agenda Review Ground Rules for Classes Earth s Spheres Cycles of Life on Earth Explore the Water Cycle Label the Water Cycle Diagram Match the terms game Writing Strategy Today s Web Resources Reminders Exit Ticket Your Questions Ground rules Please close all other apps & web pages. No Facebook, games, music, etc. No off topic chat Be respectful of each other Don t share personal information I can see all chat even private chat Scientific Terms to Save biogeochemical cycles nutrient cycle by which a chemical, element or molecule moves through both biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. water cycle (AKA the hydrologic cycle) is the journey water takes as it circulates from the land to the sky and back again. atmosphere body of air which surrounds our planet lithosphere solid, rocky crust covering entire planet hydrosphere all of the water on or near the earth, including: the oceans, rivers, lakes, and even the moisture in the air transfer of energy movement of energy from once source to another. air invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. water H 2 O land portion of the lithosphere made up of dry ground. biotic system includes all of the living things in an environment. biosphere area around the planet Earth where life exists abiotic system is the physical environment including climate, temperature, availability of light and water, and topography 1

2 What is the Biosphere? It is the area around the planet Earth where life exists. The hydrosphere is composed of all of the water on or near the earth. This includes the oceans, rivers, lakes, and even the moisture in the air. Ninety seven percent of the earth's water is in the oceans. The remaining three percent is fresh water; three quarters of the fresh water is solid and exists in ice sheets. The lithosphere is the solid, rocky crust covering entire planet. This crust is inorganic and is composed of minerals. It covers the entire surface of the earth! The atmosphere is the body of air which surrounds our planet. Most of our atmosphere is located close to the earth's surface where it is most dense. The air of our planet is 79% nitrogen and just under 21% oxygen; the small amount remaining is composed of carbon dioxide and other gases. Two Secrets of Survival: Energy Flow and Matter Recycling 2

3 Next, we are going to look at some of those biogeochemical cycles together I am going to display an image that will represent one of the 5 cycles shown on slide 9. Which Cycle is this? We will work together to analyze (figure out) what is going on. Take a minute and gather all the data you can from the picture. (Yep get a pencil ready! ) Do not share your data until the timer is finished. Now, let s try the Phosphorus Cycle Could you trace the transfer of energy from solar (to grow plants), to chemical in the (sugar molecules the cow broke down) and so on? Can you see all the spheres at work? The Nitrogen Cycle The Carbon Cycle Can you think of another place you could study the nitrogen cycle? So are these the only cycles on Earth? Can you name another? 3

4 The Sun s Role The sun s energy is necessary to power the water cycle. The Sun s radiant energy drives the water cycle! AKA the Hydrologic Cycle Evaporation Evaporation is the process where water changes from a liquid to a gas or vapor. Evaporation is the main way that water moves from a liquid back into the water cycle as atmospheric water vapor. Evaporation vs. Transpiration The sun warms the water in the ocean, causing it to change from water (liquid) to water vapor (gas). Transpiration Condensation Condensation is how water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is how clouds are formed. Once the warm gas hits the cooler air it changes back into a liquid and forms a cloud. 4

5 Precipitation Once they become so heavy, the cloud can no longer hold them. It begins to precipitate. Precipitation Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, hail or fog. It is the main way that water in the atmosphere gets to the surface of the Earth. Most precipitation falls as rain. Run off Precipitation falls on the land, flows overland (runoff), and runs into rivers, which then empties into the oceans. Rivers also gain and lose water to the ground. Much of the water in rivers comes directly from runoff from the land surface. After travelling across the surface of the earth the run off from the precipitation collects in: Rivers Lakes Oceans But does all of the water end up back in the Ocean right away? No Infiltration If it did plant life would not get all of the water it needs to its deeper roots. Infiltration is a portion of the water that falls as rain and snow that infiltrates into the subsurface soil and rock. Then what? It starts all over again! That is why it is called a cycle. Review of Terms Runoff Condensation Evaporation Precipitation Infiltration 5

6 Water Cycle Puzzle You will be in a breakout room and you will see this slide. INSTRUCTIONS Answer Key You will be able to click on the words and drag them to the proper place in the water cycle. When you are done, raise your hand and I will check your work. Reboot from Memory biogeochemical cycles water cycle atmosphere lithosphere hydrosphere Transfer of energy air water land biosphere area around the planet Earth where life exists all of the water on or near the earth portion of the lithosphere made up of dry ground. H 2 O movement of energy from once source to another. invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. solid, rocky crust covering entire planet nutrient cycle by which a chemical, element or molecule moves through both biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. the journey water takes as it circulates from the land to the sky and back again. body of air which surrounds our planet OAA Writing Strategy Explain how does salt water from the ocean end up as fresh water in precipitation? (2 points) 6

7 OAA Writing Strategy Explain how does salt water from the ocean end up as fresh water in precipitation? (2 points) A evaporation sun cloud Salt water from the ocean falls on the Earth as fresh water when it falls as precipitation. First the sun s solar energy heats up the ocean s water and this makes the water evaporate as water vapor. Second, the condensations that forms in the clouds is fresh water because only the water vapor rises in the air and not the salt. B salt left behind Web Resources Ocean Salinity and the water cycle ube.com/watch?v=ksv7kvyxgqu kidszone/the water cycle FILE TRANSFER Today s Slides Remember No class on Thursday due to field trip! Remember a recording of this class will be on your daily plan, but also now on jlog. Learn more from the MS newsletter Upcoming Science Events: Science Zone this is open tutoring help with your science on Tuesdays and Thursdays from 4 5pm. If you need help with science click on the link in your newsletter or at the bottom of every science teacher s jlog page. Planetarium Field Trip in Bowling Green, November 8 th Great Lakes Science Center in Cleveland, December 19 th (See MS newsletter & online events calendar for more info.) Study Island: New for this week 2e Need help on your science project? KMail me or come to science zone! Great Lakes Science Center WHEN: Wednesday, December 19 th, 2012, 10:00am 5:00pm Tell me how you feel about class. WHERE: Great Lakes Science Center Address: 601 Erieside Avenue Cleveland, Ohio Located at the foot of East 9th Street and the Shoreway (St. Rt. 2) between the Rock & Roll Hall of Fame and the new Browns Stadium. Look for the OMNIMAX dome WHO: Maximum of 75 students, plus parents and siblings may attend the outing. To learn more about the Great Lakes Science Center visit their website at: HOW MUCH: $10 for general admission, OMNIMAX, and middle school science demonstration, plus your own packed lunch. We need to pay as a group upon arrival so please bring EXACT cash, no checks or credit cards for the admission. Adults must supervise their students for the entire event. IF YOU WANT TO ATTEND: RSVP Required by November 30th to jfortin@ohva.org (Please include names of all persons attending and the grades of students in OHVA, space is limited) More information is on the online events calendar: QUESTIONS? KMail or call Mrs. Fortin if you have any questions: ext

8 QUESTIONS / DISCUSSION If you have a question raise your hand. Next use the polling tool If you have a working microphone and you have done the audio set up give me a green check. If not then give me a red x. People with a red x can type their question in the chat box but don t send it until it is your turn. 8