Igneous Rocks

2. The three ways igneous rocks are classified are by crystal size, mineral composition and ________.
6. Minerals that have larger, well-formed crystals surrounded by smaller crystals have a _________ texture.
8. Pressure and temperature _______ with depth in the Earth.
10. Type of igneous rock that cools and crystallizes in the Earth.
12. The type of rock formed from the cooling or crystallizing of magma or lava.
17. Type of igneous rock that is low in silica content and darker in color.
18. Intrusive igneous rocks have _______ sized crystals.
19. Molten (melted) rock that has reached the Earth's surface.

1. Extrusive igneous rocks cool _______.
3. Type of igneous rock that cools and crystallizes on the surface of the Earth.
4. ________ is a granitic igneous rock even though it is generally dark in color.
5. Diorite is an intrusive, _________ igneous rock.
7. Type of igneous rock that is high in silica content and lighter in color.
9. Magma formation is based on temperature, ________, water content, and mineral content.
11. Minerals that have a spongy appearance have a _________ texture.
13. Pumice cooled and crystalized ________ the surface of the Earth.
14. Extrusive igneous rocks have ________ crystals.
15. Molten (melted) rock that is below the Earth's surface.
16. Intrusive igneous rocks cool ________.