Adalyn D1-3

2. Shaking of Earth's crust
5. Heat from below Earth's surface
6. The sliding of denser ocean plate under another plate when they collide
11. Magma that reaches Earth's surface and flows out a vent
12. A huge crack in Earth's crust
14. Hot, molten rock below Earth's surface
15. A wide, gently sloped cone that forms from flows of lava
17. The point on Earth's surface directly above the focus of an earthquake
19. horizontal layers
21. drift The idea that a super-continent split apart into pieces, the continents, which drifted in time to their present location
23. The idea that Earth's surface is broken into plates that slide slowly across the mantle

1. A very hot part of the Earth's mantle
3. The central opening in a volcanic area through which magma may escape
4. A vibration that spreads out away from a focus when an earthquake happens
7. Earth's solid,rocky surface
8. The idea that new crust is forming at ridges in the sea floor, spreading apart the crust on either side of the ridges
9. A sensitive device that detects the shaking of Earth's crust during an earthquake
10. The amount of energy released by an earthquake
13. A steep-sided cone that forms from explosive eruptions of hot rocks, ranging from partials to boundaries
16. A cup-like hollow that forms at the top of a volcano around the vent
18. A cone formed from explosive eruptions of hot rocks followed by a flow of lava, over and over
20. The layer beneath Earth's crust
22. The point where an earthquake starts as rocks begin to slide past each other