Across
- 2. a mix of tiny rocks and bits of dead plants and animals.
- 4. a hard, nonliving part of Earth.
- 6. a scale for comparing the hardness of minerals.
- 7. how well a mineral resists scratching.
- 9. how something looks when light reflects off of it.
- 11. bits of rock and soil that help plants and animals grow.
Down
- 1. the shade or hue of an object.
- 3. rough soil composed of rock pieces and pebbles larger than sand particles.
- 5. a very small particle of soil that is smaller than sand or silt particles.
- 8. tiny pieces of rock found on beaches and in the desert.
- 10. tiny pieces of broken rock in soil that are smaller than sand.