Glossary- crater
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A large, bowl-shaped hole in the ground usually cause by an explosion.
- crust
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The crust is the outermost layer of a planet and is made up of different types of rocks
- igneous
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meaning that the rock has formed from the cooling and hardening of lava
- lava
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hot, molten rock coming from a volcano
- magma
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Magma is hot, pasty rock that moves within the mantle.
- mantle
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The mantle is the middle layer of the Earth which is made of hot, dense, semisolid rock.
