1. Earth Science Review CST All Advanced!!

2. Terrestrial Planets: Made of silicate rock

3. Gas Planets: H and He, Rapid rotation, not dense

4. Earth = 4.54 billion years old

5. Early Earth Atmosphere: CO 2, N 2 (no O 2 ) Lots of water present No layer of O 3  hot temps

6. Venus = Closest planet, 258 million kms

7. Alpha Centauri: Closest star besides Sun, 4.2 light years away

8. Sun Fusion: Fuse 2 H to make 1 He

9. Creation of Our Moon: Earth collides with huge asteroid  creating debris (moon)

10. Chicxulub Crater, Mex: Asteroid hit Earth, killed off dinosaurs 65 mya

11. Milky Way Galaxy: 100,000 lt yrs big

12. Galaxies are made up of stars like sexy me!

13. How do Elements Form? Well when big bang happened, presumably hydrogen and helium were formed. Now we know that today under extreme conditions we can create atoms with atomic number higher than 92. So we can also say that if such harsh conditions occur, it is possible that elements heavier than hydrogen could be formed. (this process is called nuclear fusion). conditions required for nuclear fusion = extremely high temperature and pressure. in the earth amosphere no such condition occur naturally to create such huge amount of other elements. so we look else where. where do we look????? but of course in the vast universe. we see stars. we know stars die. so when massive stars die they under go super nova explosion and during this heavier elements are formed. this material is then expelled into the surrounding interstellar medium. now we know how the earth was created dont we? it was created from the nebula. this nebula also contained the reminants of super nova explosion and thus we find heavier metals on earth.

15. Sea Floor Spreading: Divergent Plates

16. Magnetic Patterns: Evidence for Plate Tectonics

18. Convergent Plates: Trenches, Volcanoes, Mtns.

20. Divergent Plates: New Land, Mid Ocean Ridges

21. Transform Plates: Faults  Equakes

22. Plate Boundaries Video Clips

23. Rock Cycle Video Clip

24. Click for Video!

25. Richter Scale: Log of energy waves Seismograph: Measures amplitude of wave

26. Mercalli Scale vs Richter Scale

27. Volcano Formation

28. Shield: Gentle slope, not explosive, large, fluid lava Composite: Explosive, steep sides, small, viscous lava

29. Topo Maps: Used to diagram Earth’s surface features: shows elevation SAME THING!

30. Topo Map Image Side View Image

33. Venus: Huge Greenhouse Effect

34. Coriolis Effect: Makes wind and ocean currents deflect too!