Earth Review

2. the inner layers of the Earth and more ---- than the outer layers
3. where convection that moves the tectonic plates occurs
4. a type of rock created by intense heat and pressure
9. form mostly at tectonic boundaries
11. a type of rock created from magma or lava
14. waves, helped scientists tell which layers of the earth were solid and which were liquid
16. two plates moving away from each other
17. a mass -------- occurs at the end of some eons
19. break down of sediment
20. rocks that are on top of other rocks are ----- than those rocks
22. the second shortest amount of time on the geologic time scale
23. a famous fault that occurs at a transform boundary
24. a type of rock created by other pieces of broken up rock
28. the study of strata (rock layers) and their relationship to the geological time scale
29. deep part of the ocean formed at oceanic-oceanic and oceanic-continental boundaries
30. process of depositing rocks and sediment
31. type of weathering where rocks break down but don't change chemically

1. the tendency of hotter and less dense material to rise, and colder, denser material to sink
5. the weather conditions in an area in general or over a long period.
6. two plates moving past each other
7. movement of sediment
8. the study of Earth processes
10. core,the most dense layer of the earth
12. measured by using the Richter scale
13. the layer of Earth we live on
15. came up with a set of laws that explain stratigraphy
18. two plates moving towards each other
21. a type of dating that uses half lives of elements
23. when an ocean plate goes underneath either a continental or oceanic plate
25. the longest period of time on the geologic time scale
26. type of weathering where rocks break down and change chemically
27. fossil, a fossil from a specific time period that lived all over the world