Volcano Vocab Crossword

2. Molten rock located beneath Earth’s surface.
7. The process by which crystals form as molten material cools and solidifies.
8. Volcano A volcano where lava erupts from long cracks in Earth’s crust instead of a single opening.
11. A tall, steep-sided volcano made of alternating layers of lava and ash; eruptions are often explosive.
13. A large bowl-shaped depression formed when a volcano collapses after a massive eruption.
15. Plate A tectonic plate made of thicker, less dense rock that forms continents.
16. Plate A large piece of Earth’s lithosphere that moves slowly over the mantle.
17. The thick layer of hot, semi-solid rock beneath the crust.
18. Volcano A wide, gently sloping volcano formed by many flows of thin, runny lava.
19. The release of magma (lava), ash, gas, and rock from a volcano onto Earth’s surface.

1. Ridge A boundary where tectonic plates move apart and new crust forms as magma rises.
3. The process where solid rock becomes molten due to heat.
4. A number that measures the amount of energy released by an earthquake.
5. A state in which rock is melted due to high temperature.
6. Earth’s thin, outermost layer where continents and oceans are located.
9. Period The length of time a volcano actively erupts.
10. Spot A fixed area of unusually hot mantle that melts through the crust and forms volcanoes.
12. Plate A tectonic plate made of dense basalt rock that forms the ocean floor.
13. A solid material whose particles are arranged in a repeating, organized pattern.
14. Magma that has reached Earth’s surface.
18. Zone A boundary where one tectonic plate sinks beneath another into the mantle.