Across
- 2. The type of rock formed by the accumulation of sediment.
- 9. A rock formed from the alteration of pre-existing rocks in response to changes in temperature, pressure, or other environmental conditions.
- 10. A natural resource that forms from the remains of dead plants and animals over millions of years.
- 11. This term describes the way light reflects from a mineral's surface.
Down
- 1. This light-colored igneous rock forms the Earth's continental crust.
- 3. This type of rock is formed from the cooling and solidification of magma or lava.
- 4. The process that breaks down rocks through chemical, biological, or physical means.
- 5. The hardest known natural material on Earth.
- 6. The study of the Earth's physical structure and substance.
- 7. The continuous process by which rocks are created, changed, broken down, and formed again.
- 8. The layer of the Earth that is made up of tectonic plates.
- 9. This molten rock is found beneath the Earth's surface.