1. Warm Up How long can a human survive without: a) Air? b) Water? c) Food?

2. Rule of 3 Air- 3 minutes Water- 3 days Food- 3 weeks Which of these 3 would be considered the most precious resource?

3. Learning GoalsActivities Describe the composition of the atmosphere Explain how the temperature and pressure of the atmosphere varies with altitude Model how heat is transferred throughout the atmosphere PowerPoint Stations – Layers of the Atmosphere and Heat Transfer Closure

4. All gases that surround Earth’s surface The Atmosphere

5. Why is the atmosphere important for life on Earth? Provides necessary gases for life CO 2 – photosynthesis, greenhouse gas O 2 – Cellular respiration Protection from harmful radiation, meteors Warmth- keeps Earth habitable through the greenhouse effect

6. What is the atmosphere made of?

7. Composition of the Atmosphere Nitrogen 78% Oxygen 21% Other 1% Other includes Argon, Carbon Dioxide, Methane

9. Composition of the Atmosphere Water Vapor Water that evaporates from oceans, lakes and streams. Plants and animals transpire and respirate

10. The atmosphere also contains solids – called “aerosols” or “particulates”

11. Composition of the Atmosphere Ozone: a gas molecule that of made up of three oxygen atoms. The ozone layer (stratosphere) absorbs harmful UV radiation from the sun. Human activities have depleted the ozone layer

14. Atmosphere Stations- 20 min/stn 1- Layers Foldable2- Heat Transfer Demo Use text and online sources to create your own foldable on the paper provided – this paper should then go into your notebook Radiation, Conduction, Convection 2 set-ups: Heat Lamp and Thermometer Confetti – Beaker – Hot plate Diagram and Labels with explanations of where and how heat is being transferred

17. https://www.youtube.com/watch?v =ZzCA60WnoMk Greenhouse Effect Lab

18. The Greenhouse Effect Greenhouse Effect: warming of the Earth’s surface that occurs when CO ₂, water vapor and other gases absorb and re-radiate the solar radiation

19. What are greenhouse gasses? Any gas that can absorb outgoing radiation from earth and radiate it back toward the surface of the planet Includes Carbon Dioxide, Nitrous Oxide, Water Vapor, and Methane Keeps Earth’s average temperature @ 55°F

21. How does the atmosphere keep us warm?

22. ProsCons The Greenhouse Effect

23. Greenhouse Effect What happens to the temperature of the Earth’s surface? What holds in all of the radiation from the sun? Instead of the Sun’s radiation being reflected back out into space it is ____________ back to Earth. One PRO of the greenhouse effect: One CON of the greenhouse effect: