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Where’s the Air?

Join the investigation into Earth's atmosphere in this informative article. Discover why the atmosphere is invisible, learn about the different layers, and explore the gases present. Suitable for interactive notebooks.

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Where’s the Air?

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  1. Where’s the Air? Earth’s Atmosphere Investigation 2, Part 2

  2. Earth from Space • Turn to pg 8. • Larger photo taken by Apollo 17 astronauts in 1972 • The upper image taken by Space Shuttle astronauts. • Shows only a small portion of Earth

  3. Where? Atmosphere Can you see the atmosphere? No

  4. Why? Why can’t you see the atmosphere? So thin it is not visible from far away

  5. Can you see the atmosphere in the image of Earth taken from the shuttle? Yes, it is white, orange layer above Earth’s surface Clouds What objects can you see in the atmosphere?

  6. Atmosphere A layer of air surrounding the Earth(Add to your Interactive Notebooks.) Between Earth’s surface and the vastness of space We live at the bottom of the atmosphere.

  7. Layers of the Atmosphere • Based on the properties of the atmosphere

  8. Troposphere Lowest layer Most of the air Contains 85% of the air Weather occurs Represents 2% of height Most complex part of the atmosphere Stratosphere Ozone layer is found here Layers of the Atmosphere

  9. Thermosphere Not much is known There isn’t much air found in this layer Mesosphere Layer where meteors burn up to create shooting stars Layers of the Atmosphere

  10. Exosphere Farthest layer from Earth Thick layer Contains very little air Transition between Earth’s atmosphere and outer space Layers of the Atmosphere

  11. Elevator to Space • Fossweb.com program • View the program and see what happens as you move through the atmosphere.

  12. Thin Blue Veil Reading • Read starting on page 8, “The Thin Blue Veil”. • When finished answer the questions on Lab page 5.

  13. Thin Blue Veil ReadingAnswers • What is the atmosphere? • The layer of gases (air) surrounding Earth • Describe how the amount of air changes as you travel up through the Earth’s atmosphere? • Air gets thinner • There is less and less air

  14. Thin Blue Veil ReadingAnswers • Describe how the composition of gases change as you travel up through Earth’s atmosphere? • Nitrogen and oxygen stay pretty much the same • Carbon Dioxide, water vapor, and methane are found only in the troposphere

  15. Thin Blue Veil ReadingAnswers • Describe how the temperature changes as you travel up through the atmosphere? • Temperature generally decreases as altitude increases

  16. Thin Blue Veil ReadingAnswers • What layer of the atmosphere do you think is of greatest interest to meteorologists? Why do you think so? • Troposphere • This is where the clouds, wind, rain, and other weather occur

  17. What gases are found in the atmosphere? Nitrogen Oxygen Carbon dioxide Water vapor Hydrogen Helium Argon Methane What gases are only found in the troposphere? Carbon dioxide Water vapor Methane Thin Blue Veil ReadingAnswers

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