1 / 15

The Atmosphere

Understand the composition of Earth's atmosphere, the role of carbon dioxide, and the concepts of air pressure and altitude. Learn about trace gases, solid particles, and the importance of water vapor. Test your knowledge with a quiz!

kathykelly
Download Presentation

The 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. The Atmosphere

  2. atmosphere • definition: the layer of gases that surrounds the Earth • weather: the condition of Earth’s atmosphere at any given time or place

  3. What gases are in our atmosphere? • nitrogen (N2) = 78% • oxygen (O2)= 21% • trace gases= 1% • argon • CO2 • neon • methane • krypton • hydrogen

  4. What are some sources of carbon dioxide (CO2) in our atmosphere? • burning fossil fuels releases CO2 into the atmosphere • Greenhouse Effect- CO2 and other gases act as a blanket to hold in heat close to Earth

  5. What else is in our atmosphere? • Water vapor- from evaporation and transpiration (1 tree gives off 40,000 gallons of water vapor in a year!) Solid particles (particulate matter)- dust, smoke, pollen, salt, NOX, VOX- from car exhaust, burning and volcanic eruptions

  6. ozone • O3- a form of oxygen with 3 atoms of oxygen instead of 2 • the layer of ozone in the atmosphere absorbs UV radiation from the sun and heats the Earth

  7. air pressure • definition- the weight of a column of air pushing down on an area • More dense air has higher air pressure than less dense air. • barometer- an instrument used to measure air pressure

  8. air pressure animation • http://www.classzone.com/books/earth_science/terc/content/visualizations/es1901/es1901page01.cfm?cha

  9. altitude • definition- the distance above sea level • The higher the altitude the lower the air pressure. • animation: http://www.phschool.com/webcodes10/index.cfm?fuseaction=home.gotoWebCode

  10. properties of air: 1. mass- even though you can’t see it, air has mass 2. density- the density of air near Earth’s surface is greater than its density at high altitudes 3. pressure- air exerts a force called pressure

  11. Notes Quiz • What is the most abundant gas in our atmosphere? 2. What are some trace gases that are in our atmosphere? (name 3)

  12. 3. What is ozone?a) liquid oxygenb) oxygen molecule with 3 atoms of oxygen instead of 2c) a form of rust 4. What are some of the solid particles in air? (Name 4)

  13. 5. Why would there be more water vapor in a tropical rain forest than in a desert?a) the climate is wet in a rain forest and a lot of water would evaporateb) there would be a lot of transpiration from the treesc) both a and b

  14. 6. What is air pressure? • 7. In what 2 units is it measured? • 8. How is air pressure affected by density?

  15. 9. How is air pressure affected by altitude?10. Does air have mass? How do you know?

More Related