1. Streak is a minerals property.

2. Luster is a mineral property.

3. Hardness is a mineral property.

4. We use minerals to make jewelry, coins, metal objects, plaster, and wires.

5. There are 3 types of rock (igneous, sedimentary, and metamorphic.

6. Igneous rock form when melted rock hardens.

7. Sedimentary rocks form over a long period of time by layers of sediments being squeezed and stuck together.

8. Metamorphic rocks form when a rock is put under great heat and pressure.

9. Rocks can change over time.

10.In the rock cycle, rocks change from one kind of rock to another.