Across
- 1. currents in the mantle caused by the magma being heated by the core of the Earth
- 2. the theory that all of the continents are slowly moving
- 3. a land between mountains or hills
- 7. tectonic plates spreading apart, new crust being formed
- 12. stress that pushes a mass of rock in two opposite directions
- 13. fertilized dirt
- 18. a large wave caused by an Earthquake in the ocean
- 19. a line of volcanoes lining the Pacific Rim
- 20. seismic waves which travel on the Earth's surface
- 22. large sections of the crust which move due to convection currents
- 24. the supercontinent all of the continents once formed
- 25. a mix of clay and sand
- 27. Stress that stretches rock so that it becomes thinner in the middle
- 29. the process of a new seafloor being spreaded due to plates spreading away
- 31. a natural material which keeps its shape when hardened and fired
- 32. the uppermost part of the mantle
Down
- 1. places where tectonic plates are about to cross
- 4. something being pushed together into a tightly packed space
- 5. waves made by earthquakes which carry its energy
- 6. a very deep and thin hole in the ocean
- 8. the effects of tectonic plates sliding across one another
- 9. solid iron and nickel in the middle of the earth
- 10. places where plates spread away from one another
- 11. a seismic wave which moves the ground in a zigzag pattern (up to down/side to side)
- 14. a layer between the mantle and inner core made of molten iron and nickel
- 15. a crack in the Earth's crust
- 16. the layer of the Earth we live on
- 17. a mountain which dispenses magma and gases
- 21. the soft part of the mantle where the tectonic plates move
- 23. dead plants that have been mixed together, making up what is essentially compost
- 24. a seismic wave which compresses and expands the ground
- 26. a large steep hill
- 28. the movement of one tectonic plate underneath another
- 30. the layer under the crust that is made of hot, compressed rocks