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InsideTheSchool.com’s Atmosphere Webquest This Webquest is based upon Internet materials from the National Oceanic and Atmospheric Association’s educational Web site, JetStream. Begin the Webquest at http://www.srh.weather.gov/jetstream/atmos/atmos_intro.htm Introduction http://www.srh.weather.gov/jetstream/atmos/atmos_intro.htm 1. Why does the earth need an atmosphere? 2. Create a mnemonic picture to help you remember the four most common atmospheric gasses that make up 99.998% of the atmosphere. Be sure to include the gas’s atmospheric function in your picture. Example (not one of the four gasses): methane – a greenhouse gas that comes from animal sources Methane www.InsideTheSchool.com Reproduction of this handout is encouraged. Please credit InsideTheSchool.com on photocopies and handouts. 1 Layers of the Atmosphere http://www.srh.weather.gov/jetstream/atmos/layers.htm 3. Identify the four characteristics that define an atmospheric layer. a. b. c. d. 4. Using the first letter of each atmospheric layer, develop a mnemonic sentence to help you remember the layers (in order from earth to sky). Click on Ionosphere http://www.srh.weather.gov/jetstream/atmos/ionosphere_max.htm Ionosphere 5. What is the importance of the E-layer? 6. What causes the existence of the ionosphere? 7. In what atmospheric layer does the ionosphere occur? Click on AM in the PM http://www.srh.weather.gov/jetstream/atmos/ll_ampm.htm AM in the PM – homework activity You’ll need the Radio Station Reception Form. If you don’t have it, print it out here: http://www.srh.weather.gov/jetstream/atmos/images/ampm.pdf Follow the directions and complete the activity for homework. Air pressure http://www.srh.weather.gov/jetstream/atmos/pressure.htm 8. Explain how tiny molecules in the air exert pressure. www.InsideTheSchool.com Reproduction of this handout is encouraged. Please credit InsideTheSchool.com on photocopies and handouts. 2 Optional in-class activity Click on Air: The Weighty Subject http://www.srh.weather.gov/jetstream/atmos/ll_airweight.htm Materials needed: yard or meter stick, two balloons, string, clear tape, scissors Why does the inflated balloon drop? Severe thunderstorms are characterized by hail and strong winds (more than 58 mph). Why do strong winds create hazardous weather conditions? 9. Why is warm air less dense than cool air? Where in the atmosphere is the densest air? Optional in-class activity Click on Crunch Time http://www.srh.weather.gov/jetstream/atmos/ll_crunch.htm Materials needed: two empty, clean 2-liter soda bottles with caps; two cups hot tap water 10. Why don’t Rev. Dr. Brewer’s barometric observations apply to weather in the tropics? The Transfer of Heat Energy http://www.srh.weather.gov/jetstream/atmos/heat.htm Your definition Your example 11. Radiation 12. Conduction 13. Convection www.InsideTheSchool.com Reproduction of this handout is encouraged. Please credit InsideTheSchool.com on photocopies and handouts. 3 14. Explain how radiation and convection influence the atmosphere. The Earth-Atmosphere Energy Balance http://www.srh.noaa.gov/jetstream//atmos/energy.htm 15. Why is the earth’s climate stable? 16. What is the greenhouse effect? 17. What nighttime conditions cause the most radiation cooling? The Hydrologic Cycle http://www.srh.noaa.gov/jetstream//atmos/hydro.htm Evaporation Definition Evaporation is the change of state in a substance from a liquid to a gas. Sketch Transpiration Condensation Precipitation Runoff www.InsideTheSchool.com Reproduction of this handout is encouraged. Please credit InsideTheSchool.com on photocopies and handouts. 4 Atmosphere Quiz http://www.srh.noaa.gov/srh/jetstream/quiz/index.php Take the quiz online until your score is 8/10 or better. Copy and paste your score result here. End question: Write a paragraph in which you explain how external energy from the sun impacts the earth’s atmosphere. Devote at least a sentence to each of the following topics: gasses in the atmosphere, atmospheric layers, air pressure, heat energy, and the hydrologic cycle. www.InsideTheSchool.com Reproduction of this handout is encouraged. Please credit InsideTheSchool.com on photocopies and handouts. 5