1. The Earth’s Atmosphere re-teaching assignment

2. The Earth is surrounded by a “blanket” of air called the atmosphere. http://www.lunaroutpost.com/gallery/earth/pages/earth_full_hires%20copy.htm

3. The Earth’s Atmosphere is a mixture of gases: http://webusers.astro.umn.edu/~john/Ast1001/air/atmos-compos.jpg

4. What are some natural events that afffect the earth’s atmosphere? Forest fires Volcanic ash http://upload.wikimedia.org/wikipedia/en/thumb/4/49/Wildfire3.jp g/240px-Wildfire3.jpg http://www.windows2universe.org/earth/interior/ash.html

5. What keeps the atmosphere so close to the earth??? GRAVITY! http://www.cs.dartmouth.edu/farid/sciencekids/gravity2.jpg

6. Although it seems thin, the atmosphere is ~500 miles thick!

7. Even the International Space Station flies within the Earth’s atmosphere! http://nssdc.gsfc.nasa.gov/image/spacecraft/iss.jpg

8. The atmosphere has five basic layers. http://www.theozonehole.com/atmosphere.gif

9. THE LAYERS ARE DETERMINED BY CHANGES IN TEMPERATURE http://www.windows2universe.org/earth/Atmosphere/layers_a ctivity_print.html

10. Temperatures in the Atmosphere Why does the graph zigzag back and forth?

11. We live in the lowest layer, the troposphere. http://www.fas.org/irp/imint/docs/rst/Sect14/atmosphere.jpg

12. Most of Earth’s weather takes place in the troposphere. http://images.worldofstock.com/slides/TRA1094.jpg

13. About ten miles up is the Tropo- pause, where the troposphere ends. Most jet planes can fly close to or just above the tropopause.

14. Between each atmospheric layer, we have a “pause” or break. These are arbitrary lines- and not real breaks. http://www.epa.gov/apti/course422/images/fig-1.gif

15. After the troposphere comes the stratosphere. http://www.greenfacts.org/glossary/images/stratosphere-troposphere.jpg

16. High winds in the statosphere are called the Jet Stream. www.accuweather.com/www/nyc/jetstream.gif

17. The Ozone layer (O 3 ) can be found in the stratosphere. It protects us from harmful UV radiation from the sun. http://veimages.gsfc.nasa.gov/138/ozone_hole_large.jpg http://www.okiu.ac.jp/Language/contest/02/12/ozone.gif

18. Weather Balloons explore the stratosphere. http://www.discover.uottawa.ca/~aelsawah/GNG1101/LAB2_files/image004.jpg http://www.ssec.wisc.edu/sose/wvi/images/scen3.jpg

19. In the Stratosphere… spy planes! http://retrothing.typepad.com/photos/uncategorized/2007/12/21/sr71bla ckbird.jpg

20. Believe it or not, 99% of all the gases that surround the earth are found in the first two layers we’ve seen so far.

21. Mesosphere is the layer In the Middle!

22. Mesosphere- where the meteors burn. http://www.meteorites.homepage.t-online.de/jpg/cerny.jpg hektor.umcs.lublin.pl/.../collection/nantan.jpg

23. Millions of meteors burn up in our atmosphere each year. If they hit the ground, they are called a meteorite. http://www.montaukobservatory.com/Observer/meteor-nasa.gif Perseid Meteor Shower

24. If it weren’t for the atmosphere… http://woodshole.er.usgs.gov/epubs/bolide/images/meteorcrater.jpg (Barringer Crater) in Arizona, some 38 miles east of Flagstaff,

25. http://www.worth1000.com/entries/111000/111117fKmj_w.jpg Meteor Impact in the Yucatan Peninsula, Mexico. This possibly killed off the dinosaurs.

26. Smaller impacts do occur but are rare. http://static.howstuffworks.com/gif/peru-meteor-1.jpg Peru, South America http://apod.nasa.gov/apod/image/0611/peekskill_thomas.jpg Peeksgill, New York

27. THERMOSPHERE IS MADE OF THE IONOSPHERE & THE EXOSPHERE. http://www.arsc.edu/science/ionosphere.html

28. Ionosphere- Where solar particles are ionized in the upper atmosphere. http://www.arsc.edu/science/ionosphere.html

29. Ionosphere reflects radio waves apollo.lsc.vsc.edu/.../ionosphere_layers.psd.gif

30. The Aurora- Borealis (N)/Austrialis (S) http://shelp.chess.cornell.edu/multimedia/aurora/09_07_02/35mmlights2_9_7_02.jpg

31. The Exosphere is the outermost layer. After that the area we call “outer space” begins. atschool.eduweb.co.uk/.../gfx/exosphere.jpg

32. Temperatures in the Exosphere

33. Things found in the Exosphere. http://nssdc.gsfc.nasa.gov/image/spacecraft/iss.jpg http://www.boeing.com/defense-space/space/hsfe_shuttle/images/nasa-sys_shuttle_sts071-741_200X250.jpg

34. Satellites orbit Earth in the exosphere. http://www.wmo.ch/web/www/images/GOS/Figure%20II-10%20Satellites.jpg

35. If it weren’t for the atmosphere, our earth would look like…

36. http://www.astrosurf.com/cidadao/moon_99_02_23_south.jpg The moon, with thousands of impact craters.

37. Because the moon has less gravity and much higher temperatures than the earth, its gases get “excited” or very energetic, and are lost to space. http://www.abc.net.au/science/features/lunaeclipse2007/

38. What is Air Pressure? Air pressure is the weight of the atmosphere pressing down on an area of the earth. http://dogfoose.com/infotoons/

39. Pressure changes with altitude – the higher altitude, the lower the air pressure. htt://images.google.com/imgres?imgurl=http://www.physical geography.net/fundamentals/images/pressure_altitude.jpg&i mgrefurl=http://www.physicalgeography.net/fundamentals/7d.html&usg=__2bKRE46nD8PHInoiyOVgt1Lv2ok=&h=580& w=491&sz=59&hl=en&start=5&tbnid=qFc- E7U_YbFDyM:&tbnh=134&tbnw=113&prev=/images%3Fq %3Dair%2Bpressure%26gbv%3D2%26hl%3Den%26safe%3 Dactivep

40. Credit:Mr. Fontaine, Mercer Middle School