Across
- 3. A triangle of sand and soil deposited at the mouth of some large rivers.
- 4. A high, level (flat) area of land.
- 6. An overflow of water onto land that is not normally under water.
- 8. A storm of very strong winds that form a cloud shaped like a funnel.
- 9. The wide part of a river's lower end, where it meets the sea.
- 15. An opening in the earth's crust through which melted rock, ash, and gases are forced out.
- 18. A raised area of land smaller than a mountain.
- 19. Occurs when hot materials from the Earth's interior are thrown out of a volcano.
- 20. A narrow space between rocky cliffs.
- 22. A deep valley with steep sides.
- 23. A natural hole or hollow in the earth.
- 24. Where two tectonic plates move away from each other causing rift valleys to form.
- 25. A piece of land surrounded on nearly all sides by water. It is connected to a larger body of land by a usually narrow strip of land.
Down
- 1. A long area of low land between mountains or hills. A stream or river often runs through it.
- 2. Where two tectonic plates slide past each other, often causing earthquakes.
- 5. A shaking or other movement of part of the earth's surface caused by movement deep within the earth.
- 7. A mound or ridge of coral skeletons and calcium deposits that forms in warm, shallow sea waters.
- 10. A very large, often destructive sea wave caused by a marine earthquake or volcanic explosion.
- 11. Where two tectonic plates move toward each other and one goes under the other (subduction) often causing volcanoes.
- 12. A land mass with great height and steep sides that is higher than a hill.
- 13. A powerful storm with heavy rains and winds that blow in a circle at 73 miles per hour or more.
- 14. A high, steep face of rock or earth.
- 16. A large, flat area of land with few trees.
- 17. A large body of ice moving slowly down a slope or valley, or spreading outward on a land surface.
- 21. Where two tectonic plates move toward each other and is pushed upward to form mountains.