Across
- 4. A common rock-forming mineral in Earth's crust.
- 9. Something that living things need to grow and stay healthy.
- 10. Bits of dead plant and animal parts in the soil.
- 11. materials, Any nonliving natural resource that makes up Earth, including soil and water.
- 13. The carrying away of weathered earth materials by water, wind, or ice.
- 17. weathering, The process by which the minerals in a rock can change due to chemicals in water and air. It can cause to rocks to break apart.
- 18. A mix of humus, sand, silt, clay, gravel, and/or pebbles.
- 19. a river or stream flowing into a larger river or lake.
- 20. The rubbing, grinding, and bumping of rocks that cause physical weathering.
Down
- 1. A metamorphic rock formed when limestone is subjected to heat and pressure.
- 2. weathering, The process by which rocks are broken down by breaking and banging.
- 3. A large amount of water flowing over land that is usually dry.
- 5. Rocks that are smaller than sand, but bigger than clay.
- 6. Are substances that are formed naturally in the Earth.
- 7. The sudden movement of earth materials down a slope.
- 8. A sedimentary rock made mostly of calcite.
- 12. The settling of sediments.
- 14. A substance that geologists use to identify rocks that contain calcite.
- 15. A large mass of ice moving slowly over land.
- 16. A solid earth material made of two or more minerals.
