1 / 9

Chapter 16 Section 1 Earth’s Atmosphere

Chapter 16 Section 1 Earth’s Atmosphere. * a thin layer of air that forms a protective covering around the planet . 1. Earth’s atmosphere. * keeps days cool and nights warm * protects life-forms from some of the Sun’s harmful rays. * start = Earth’s surface * end = outer space.

donald
Download Presentation

Chapter 16 Section 1 Earth’s Atmosphere

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 16 Section 1 Earth’s Atmosphere

  2. * a thin layer of air that forms a protective covering around the planet 1. Earth’s atmosphere * keeps days cool and nights warm * protects life-forms from some of the Sun’s harmful rays * start = Earth’s surface * end = outer space * made mostly of nitrogen and carbon dioxide

  3. 2. the ozone layer * formed when living organisms released oxygen into the atmosphere * protects Earth from Sun’s harmful rays formed in upper atmosphere * allowed green plants to flourish and release more oxygen 3. What gases make up the atmosphere? • nitrogen 78% • oxygen 21% • water vapor - up to 4% • argon 0.93% • carbon dioxide 0.03%

  4. 4. human effect on the atmosphere * car exhaust mixes with chemicals and form smog * burning fuel releases carbon dioxide 5. solids in the atmosphere * dust carried by wind * salt from ocean spray * pollen from plants 6. liquid droplets in the atmosphere * liquid from erupting volcanoes

  5. 7. What are the 5 layers of the atmosphere? troposphere stratosphere mesosphere thermosphere exosphere

  6. Mesosphere: • top of stratosphere to 85 km • shooting stars happen here • temperatures decrease as you get higher • many meteors disintegrate here • Stratosphere: • extends from 10- 50 km • contains ozone layer • temperatures are higher in the upper portion because of ozone molecules • weather balloons float here • Troposphere: • - 99% of water vapor - warmed by heat from Earth’s surface- 75% of atmospheric gases - most clouds and weather form here • eat, play, and, live here • rain, snow, and clouds • extends up to 10 km Earth’s Surface

  7. Outer Space • Exosphere: • - space shuttle orbits here • few air molecules here • high temperatures • 500 km to outer space • Thermosphere: • “hot layer” • thickest layer • 85 – 500 km • high temperatures because first layers to receive Sun’s rays • contains ionosphere- causes radio waves to bounce back to Earth • aurora borealis located here (northern lights)

  8. 1. ionosphere • In the mesosphere and thermosphere • layer of electrically charged particles • allows radio waves to travel (better/farther at night) 2. How does the space shuttle maneuver in the exosphere? - Uses bursts from small rocket thrusters - force exerted on an area 3. pressure 4. Is there more pressure closer to Earth or near the top of the atmosphere? Why? - closer to Earth’s surface because the molecules are closer together and causes the air to be dense

  9. 5. Why is it harder to breathe in high mountains? - there are fewer molecules of air higher up 6. Where does Earth’s energy come from? - the sun 7. Why do the different layers of the atmosphere have different temperatures? - some layers easily absorb the Sun’s energy and some do not 8. What happens to air temperature as you climb higher? - decreases about 6.5° C for every kilometer you climb

More Related