NATURAL FORCES

3. a sudden violent movement of the earth's surface, sometimes causing great damage
7. a violent wind that has a circular movement, especially in the West Atlantic Ocean
9. an extremely large wave caused by a violent movement of the earth under the sea
11. to cause to fill or become covered with water, especially in a way that causes problems
13. a large amount of ice, snow, and rock falling quickly down the side of a mountain
14. (an event that results in) great harm, damage, or death, or serious difficulty
16. a long period when there is little or no rain

1. a gradual increase in world temperatures caused by gases such as carbon dioxide that are collecting in the air around the earth and stopping heat escaping into space
2. a mountain with a large, circular hole at the top through which lava
4. to (cause to) move easily and without interruption over a surface
5. a strong, dangerous wind that forms itself into an upside-down spinning cone and is able to destroy buildings as it moves across the ground
6. to turn from something solid into something soft or liquid, or to cause something to do this
8. the fact of soil, stone, etc. being gradually damaged and removed by the waves, rain, or wind
10. to experience physical or mental pain
12. the surface of the earth that is not covered by water
15. a person who continues to live, despite nearly dying