1. 3 Types of Rocks
Vocabulary

2. Erosion
Erosion occurs when weathered materials are carried away, usually by wind, water, or ice.

3. Weathering
The process that crumbles, cracks, and breaks rocks into sediments.

4. Igneous Rocks
These rocks form when melted rock (magma) cools and hardens.

5. Metamorphic Rock
This is a rock that has changed form through heat and pressure.

6. Sedimentary Rock
This rock forms from sediment layers pressing together and cementing into solid rocks.

7. Lithification
The process that turns sediments into stone.

8. This is the hot molten rock inside the Earth.
Magma
This is the hot molten rock inside the Earth.

9. Minerals
A substance found in nature that is not a plant or animal. They are the building blocks of rocks.

10. Plates
Earth’s crust broken into sections called plates. These plates move very slowly. When plates collide, a mountain is formed.

11. Rock Cycle
The rock cycle is made up of the 3 principal types of rocks (sedimentary, metamorphic, and igneous). They can change into either of the 2 other types of rock, or even into other rocks of their own type.