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Name: Answer Key Atmosphere Study Guide 1. Describe what makes up the atmosphere Gases, Particles (solids), liquids 2. Which layer does weather occur in? ___Troposphere_____ 3. Which layer contains the ozone layer? ___Stratosphere___ 4. Which layer do meteors burn up in? __Mesosphere_____ 5. How are the layers classified? __by temperature____ 6. Label the Layers and the pauses and items you would find in each layer Exosphere - Outerspace Thermopause Thermosphere/Rocket Ships/Aurora Borealis(Northern Lights)/Ionosphere Mesopause Mesosphere - meteors burn up/ Stratopause/weather balloons Stratosphere/ozone layer Tropopause/planes Troposphere/weather/human Earth 7. List the gases and amounts of each that make up the atmosphere from most abundant to least abundant ___Nitrogen - 78%_______ ___Oxygen - 21 %_______________________________ ___Carbon Dioxide - < 1%______________________________ ___Water Vapor - < 1%_______________________________ ___Trace Gases - <1%______________________________ 8. What is pollution? The contamination of Earth’s land, water, or air 9. Where does most air pollution come from? Burning of fossil fuels (Oil, Gas, Coal) Almost half of pollution in the US is from vehicles (cars burning gas) 10. How can we reduce air pollution? Riding a bike, carpooling/riding the bus, conserving energy 11. Why does air have pressure? Air has mass 12. As altitude increases what happens to Density? _decreases______________________ Air pressure? _decreases___________________ Temperature in the: Troposphere ___decreases____________ Stratosphere __increases____________ “W” Mesosphere __decreases____________ Thermosphere ___increases_________ 13. What happens to the air molecules as altitude increases? Air molecules spread further apart as altitude increase 14. What is the greenhouse effect? The trapping of the sun’s heat in the atmosphere - acts like a blanket of gases to keep the Earth warm 15. What gases are greenhouse gases? Carbon Dioxide, Methane, Carbon Monoxide, Water Vapor 16. What does an increase in greenhouse gases cause? An increase in global temperatures because it keeps heat in the atmosphere - climate change 17. What is good ozone? Good up high Bad nearby It is located in ozone layer (90%) in the stratosphere. It protects us from UV radiation from the sun 18. What is bad ozone? Good up high bad nearby Found in the troposphere (10%) it is the main ingredient for smog, causes respiratory problems, damages crops 19. If ozone levels in the stratosphere decrease and levels in the troposphere increase, what will happen to the health of humans and animals? If levels of ozone increase in the troposphere (bad nearby) humans will have more respiratory problems if ozone levels DECREASE in the stratosphere more ultra violet rays will reach the Earth causing an increase in skin cancer, melanoma, cataracts, impaired immune systems GOOD UP HIGH BAD NEARBY
