Science 7 Unit E

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Across
  1. 2. ___________ boundary where tectonic plates move past each other
  2. 7. that way the surface of a mineral reflects light
  3. 8. when a mineral breaks with a flat, smooth, surface
  4. 11. _____________ weathering when rock is broken down by living organisms
  5. 13. when broken down rock settles down away from the source
  6. 15. rock that forms from cooled molten rock
  7. 19. rock that forms under intense heat and pressure
  8. 20. __________ boundary where tectonic plates move apart from each other
  9. 21. era where the earth formed and life began
  10. 22. molten rock underneath the surface of the earth
  11. 23. ___________ weathering when rock is broken down by physical forces
Down
  1. 1. when a mineral breaks with a rough, uneven surface
  2. 3. the spot under the surface of the earth where an earthquake starts
  3. 4. era with humans and grasses
  4. 5. molten rock on the surface of the earth
  5. 6. the break down of rock
  6. 9. ear with the first reptiles, fish, insects, and land plants
  7. 10. the spot on the surface of the earth above where an earthquake starts
  8. 12. __________ boundary where tectonic plates move towards each other
  9. 14. rock that forms from layers of sediment
  10. 16. era when the dinosaurs were on earth
  11. 17. movement of broken down rock away from the source
  12. 18. ___________ weathering when rock is broken down by water and oxygen to make new materials