Volcanoes

2. A sign on a volcano's slope that could mean melted rock is pushing up inside.
4. Lumps of lava that are jagged rocks.
7. The name of the volcano in Italy that erupted 2,000 years ago and buried Pompeii.
9. The outer shell of the Earth.
11. The layer of hot rock underneath the Earth's crust.
13. A scientist who studies volcanoes.
14. A spring that shoots a jet of steaming hot water out of the ground.

1. The name of the Roman god of fire, after which volcanoes are named.
2. Lumps of lava that cool into long, twisted shapes.
3. A word meaning "dead," used to describe a volcano that will never erupt again.
5. The extremely hot center of the Earth.
6. Melted rock that has erupted from a volcano.
8. A machine in space that takes pictures of the Earth's surface.
10. Water that flows out of the ground.
12. smokers, A type of hot spring found around underwater volcanoes that forms tall chimneys.