Warm Up How long can a human survive without: a) Air? b) Water? c) Food?
Rule of 3 Air- 3 minutes Water- 3 days Food- 3 weeks Which of these 3 would be considered the most
precious resource? Learning Goals Activities 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
The Atmosphere All gases that surround Earths surface Why is the atmosphere
important for life on Earth? Provides necessary gases for life CO2 photosynthesis, greenhouse gas O2 Cellular respiration Protection from harmful radiation, meteors Warmth- keeps Earth habitable
through the greenhouse effect, otherwise the earth would be -5 degrees. What is the atmosphere made of? Composition of the Atmosphere
Nitrogen 78% Oxygen 21% Other 1% Other includes Argon, Carbon Dioxide, Methane 1%
21% Nitrogen Oxygen Other 78%
Composition of the Atmosphere Water Vapor Water that evaporates from oceans, lakes and streams. Plants and animals transpire (water evaporates from leaves)
and cells of plants and animals undergo cellular respiration which produces water. The atmosphere also contains solids called aerosols or particulates 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 (holes in the layer) Atmosphere Stations- 20 min/stn 1- Layers Foldable Use text and online sources to
create your own foldable on the paper provided this paper should then go into your notebook 2- Heat Transfer Demo
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 1. Use the picture on next
slide to describe how water moves (The Water Cycle) ____________________________ ____________________________ 2. ____________________________ 3. ____________________________ 4. ____________________________
Greenhouse Effect Lab copy and paste the url and watch https://www.youtube.com/ watch?v=ZzCA60WnoMk The Greenhouse Effect Greenhouse Effect: warming of
the Earths surface that occurs when CO, water vapor and other gases absorb and re-radiate the solar radiation 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 Earths average
temperature @ 55F How does the atmosphere keep us warm? The Greenhouse Effect Pros Increased plant growth
Makes Earth habitable. Otherwise it would be too cold to live. Cons Global warming Extinction of certain species.
Greenhouse Effect What happens to the temperature of the Earths surface? What holds in all of the radiation from the sun? Instead of the Suns radiation being
reflected back out into space it is ____________ back to Earth. One PRO of the greenhouse effect: One CON of the greenhouse effect:
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