Plate Tectonics
Across
- 3. American Geologist and U.S. Naval Officer that studied the mid-ocean ridge
- 4. Gravity moves plates by pulling them down at ________
- 7. The force that pulls objects towards the Earth
- 8. The theory describing how Earth’s plates move and what happens when they interact with each other
- 10. Scientists suggested that the ocean floor moves like ________
- 11. The kind of crust that is thicker, less dense and older
- 12. The formation of a new crust at a ________ pushes the old crust out of the way
Down
- 1. The kind of crust that is thinner, more dense and younger
- 2. Pressure moves the plates as rising ________ pushes at the mid-ocean ridge
- 5. This is HOW the continents drift!
- 6. The force that pushes outward against the space around it
- 9. The cycle where substances rise and fall because of changes in temperature and density