2. A view of the earth

3. DIAMETER EQUATOR n 12,756 KM

4. DIAMETER POLES n 12,740 KM

5. SURFACE n 30% LAND n 70% WATER

6. ROTATION n 23 HOURS n 56 MINUTES

7. REVOLUTION n 365 DAYS

8. HIGH SPOT n MT. EVEREST n 8848 METERS ABOVE SEA LEVEL

9. LOWEST SPOT n MARIANA TRENCH n PACIFIC OCEAN n 11,033 BELOW SEA LEVEL n AVERAGE 3795 METERS BELOW

10. 3 MAIN FEATURES OF EARTH

11. WATER

12. LAND

13. AIR

14. ESS EARTH SYSTEM SCIENCE

15. LITHOSPHERE n ROCKS

16. ATMOSPHERE n AIR

17. HYDROSPHERE n WATER

18. BIOSPHERE n ANIMALS & PLANTS

19. HISTORY OF THE ATMOSPHERE

20. 4 BILLION YEARS AGO n METHANE n AMMONIA n SOME WATER

21. 3.8 MILLION YEARS AGO n SUNLIGHT n REACTION FORMED n NITROGEN n HYDROGEN n CARBON DIOXIDE

22. OXYGEN n FORMED BY BLUE GREEN ALGEA

23. NITROGEN

24. OXYGEN

25. n CARBON DIOXIDE n WATER VAPOR n ARGON

26. ENJOY THE HOMEWORK n DRAW & ID: n NITROGEN CYCLE PG 185 n CARBON DIOXIDE CYCLE PG 187 n PROBLEM SOLVING PG 190

27. PRESENT TIME

28. LAYERS OF ATMOSPHERE

29. TROPOSPHERE n WHERE WE LIVE n WHERE WEATHER OCCURS

30. STRATOSPHERE n COLD -60 DEGREES n OZONE

31. MESPSPHERE n -100 DEGREES n METEORS BURN UP IN THIS AREA

32. THERMOSPHERE n HEAT SPHERE n 2000 DEGREES n PARTICLES MOVING QUICKLY CREATE HEAT n ABSORB ULTRAVIOLET LIGHT

33. exosphere n Upper thermosphere n Artificial satellites in area

34. ionosphere n Lower thermosphere n Radio waves n Bounced off of ions

35. magnetosphere n Area extending around atmosphere n Traps deadly radiation