Earth Science

5. a naturally formed, inorganic solid that has a definite crystalline structure
7. the remains or physical evidence of an organism preserved by geological processes
8. the way in which a mineral reflects light
13. the layer of rock between the Earth's crust and core
14. a depression caused by a volcano collapsing into its own magma chamber
17. the study of past life
18. areas of the Earth's surface through which magma and gasses escape
19. a horizontal layer of rock
20. a scale used by scientists to determine a minerals hardness

1. the distance north or south of the equator
2. the point on the Earth's surface directly above an earthquake's starting point
3. waves of energy that travel through the Earth
4. surface along which rocks break and slide past each other
6. the height of an object above sea level
9. the principle that states that younger rocks lie above older rocks
10. a process by which sediment in removed from its source
11. the death of every member of a species
12. rock formed from magma
15. stress that occurs when forces act to stretch an object
16. a representation of the features of the Earth