Across
- 2. _______ weathering involves gases and minerals
- 4. when pressure pushes the rock grains together
- 5. people who study rocks and how they are formed
- 7. ____ rain is a form of chemical weathering
- 8. weathering is done by _____ forces
- 9. _____ roots are used to hold the soil together. this can help stop erosion
- 10. breaks down rocks into grains
- 12. this can also cause erosion
- 13. when magma cools
- 15. this is the hardest substance known to man
Down
- 1. where igneous and metamorphic rocks are formed
- 2. chemical reaction forms sedimentary rocks
- 3. marble is made from this
- 6. rocks formed by sediments of other rocks
- 11. when lava cools
- 14. carries rocks to a new location