1. Cause and Effect In the Rock Cycle

2. An Igneous Rock starts out as liquid rock called magma.

3. There Are Two Kinds of Igneous Rock
If magma cools and hardens inside Earth, it becomes an intrusive Igneous Rock.
If magma comes to Earth’s surface, it is called lava.
When lava cools and hardens on the surface of Earth, it becomes an extrusive Igneous Rock.

4. Igneous Rock can change to Sedimentary Rock
Andesite: An extrusive Igneous Rock
Breccia: A Sedimentary Rock

5. Moss weathers an Igneous Rock
Moss weathers an Igneous Rock. The moss produces an acid that breaks rock down into sediment.

6. Sediments are transported by moving water to a lake or ocean.

7. Sediments are compacted by the weight of the water above.

8. Igneous Rock can change to Metamorphic Rock
Granite: An Intrusive Igneous Rock
Gneiss: A Metamorphic Rock

9. An intrusive Igneous Rock is formed deep underground.

10. An intrusive Igneous Rock is heated up by nearby magma, but does not melt.

11. The crystals become larger, and the rock becomes denser.

12. Granite is an Igneous Rock often used to make countertops.