1. Unit 4

2. A rock formed from layers of sediment or bits of broken rock joined together. Example: sandstone

3. A rock that forms from melted rock such as magma that cools and hardens Example: lava rock

4. A rock that forms from heat and pressure deep inside the Earth Example: slate

5. A material found in the Earth’s crust that helps to make rocks

6. The movement of rock from one place to another- Water, wind, and glaciers can cause erosion

7. The slow breaking down of rocks into smaller pieces

8. The loose material on top of the Earth’s surface where most plants grow Example: dirt

9. Rich, dark soil formed from dead plants and animals that have rotted away

10. The remains or prints of plants and animals that lived over 10,000 years ago and that have turned into rock