Across
- 3. A diamond is a _____, or rare and valuable mineral.
- 5. Loam is a mixture of _____, silt, and clay.
- 6. Liquid rock that flows from a volcano is _____.
- 7. A _____ earthquake is called a tremor.
- 8. Soil _____ is the loss of soil by water or wind.
- 12. An _____ is MOST likely to happen where there is a break between two moving plates.
- 13. Where earthquake damage is greatest is the _____.
- 14. humus is the soft, organic substance in the soil made from the decayed remains of _____ things.
- 17. The place where plates move inside the earth’s crust; where the energy of an earthquake comes from is the _____.
- 19. A _____ is a substance found naturally in the earth that has a crystal-like structure.
- 20. Matter that settles to the bottom or sides of a body of water is _____.
Down
- 1. The two main ingredients in soil are _____ and _____.
- 2. A _____ is caused by an underwater earthquake.
- 4. Crystals are _____ arranged in precise, repeating patterns.
- 9. Weathering is the breaking down of _____ by the forces of nature.
- 10. The opening of a volcano is a _____.
- 11. Rivers and glaciers can deposit _____, making the soil more fertile.
- 15. Water is pulled down because of the force of _____.
- 16. Earthquakes and volcanic eruptions can cause _____ changes to the earth’s surface.
- 18. Bedrock is part of the earth’s _____.