London Sheeley

4. A wide, gently sloped cone that forms from flows of lava
6. The idea that many kinds of rocks form flat, horizontal layers
11. The point where an earthquake starts as rocks begin to slide past each other
12. Shaking of Earth's crust after the initial shaking of an earthquake
13. A cuplike hollow that forms at the top of a volcano around the vent
14. The central opening in a volcanic area through which magma may escape
16. A very hot part of the Earth's mantle, where magma can melt through a plate moving above it
17. Earth's solid, rocky surface containing the continents and ocean floor
19. The layer beneath Earth's crust
20. A vibration that spreads out away from a focus when an earthquake happens
22. Hot, molten rock below Earth's surface
23. The idea that a supercontinent split apart into pieces, the continents, which drifted in time to their present location

1. The sliding of a denser ocean plate under another plate when they collide
2. A steep-sided cone that forms from explosive eruptions of hot rocks, ranging from particles to boulders
3. The idea that Earth's surface is broken into plates that slide slowly across the mantle
5. The idea that new crust is forming at ridges in the sea floor, spreading apart the crust on either side of the ridges
7. nergy Heat from below Earth's surface
8. Magma that reaches Earth's surface and flows out of a vent
9. A cone formed from explosive eruptions of hot rocks followed by a flow of lava over and over
10. A huge crack in Earth's crust at or below the surface, the sides of which may show evidence in motions
15. The point on Earth's surface directly above the focus of an earthquake
18. The amount of energy released by an earthquake
21. A sensitive device that detects the shaking of Earth's crust during an earthquake