Igneous Rocks

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Across
  1. 3. Type of igneous rock that cools slowly underground and forms large, visible crystals
  2. 5. Rocks that have small or no crystals have a _________grained texture
  3. 8. About 75% of Earth's volcanoes occure in this belt around the Pacific Ocean
  4. 9. Type of igneous rock that cools quickly on Earth's surface and forms very small crystals
  5. 10. The Earth's crust is divided into large pieces called _________ that move about as fast as your fingernails grow
  6. 11. Molten rock beneath Earth's surface
Down
  1. 1. Rocks that have large, visible crystals have a _______grained texture
  2. 2. When molten rock erupts from a volcano it becomes
  3. 4. Rocks are made of one or more __________
  4. 6. One of the three main rock types; Formed from the cooling and hardening of magma or lava
  5. 7. Minerals grow in geometric shapes called ________