Across
- 3. the change in color or shape because of the effects of the sun, wind, and water over a long period of time
- 5. science of rocks, the soil, and the history of Earth
- 6. when magma (hot, melted rock) from inside the Earth bursts out through a volcano
- 10. a scientist that studies geology
- 12. an interesting or important part of something
- 14. a large natural elevation of the earth's surface rising abruptly from the surrounding level
- 16. a process that lowers or tears down the surface features of the Earth
- 19. a process that raises or builds up the surface features of the Earth
- 20. the largest canyon in the United States
Down
- 1. the gradual destruction of something by natural forces (such as water, wind, or ice)
- 2. a small copy of something
- 4. Mount ______ is the tallest mountain on Earth
- 7. a piece of land that is completely surrounded by water
- 8. a deep, narrow valley with steep sides, often carved out by a river over a long period of time
- 9. a series of changes
- 11. a landform that forms at the mouth of a river, where it flows into a larger body of water, like an ocean, sea, or lake
- 13. the speed at which something happens over a particular period of time
- 15. an area of relatively level high ground
- 17. a natural hollow space in the ground, often found in hills, mountains, or cliffs
- 18. an opening in the Earth's crust through which lava, volcanic ash, and gases escape