Across
- 3. played a major role in the Ice Age
- 5. ____ currents cause the tectonic plates to move
- 6. site of seafloor spreading
- 8. oceanic crust sinks below other crust
- 11. boundary where seafloor spreading takes place
- 12. slides past North American plate to cause California's earthquakes
- 13. Age of crust at mid-ocean ridge
- 14. ___ ocean water was needed to start the Ice Age
Down
- 1. type of boundary responsible for earthquakes in California
- 2. subduction is a ___ process
- 4. Layers of rock that contain the most fossils
- 7. Opening of the ___ of the great deep
- 9. No death = no fossils in these rock layers
- 10. About how long Noah and family were on Ark
- 11. the ____ geologic column represents Earth's rock layers