Earth Materials

4. The process of liquid solidifying into a hard three-dimensional shape.
5. The force that causes things to move.
7. A combination of sand, clay, silt, and broken-down organic matter, or humus.
8. A group of similar objects that are working together as one object.
9. Hot molten rock that has cooled and solidified.
10. The process of weathering Earth's materials by the forces of water, wind, or ice.
11. Rocks that started as one rock, and got heated or pressurized and formed into a new rock.
12. To break down or dissolve Earth material.
13. These changes transform a substance, these changes cannot be reversed.

1. Describes the process of the three rock types changing into each other.
2. Natural resources that come from fossilized organisms that are used as fuel, gas, and coal.
3. Pre-existing rocks or rocks that were once living organisms, these rocks have visible layers.
4. A process where elements are used consistently, this process has no beginning or end.
6. These changes do not produce a new substance.