Natural Disasters, Weather Conditions, Climate

2. an extremely large wave caused by a violent movement of the earth under the sea
4. (of things) not active or growing, but having the ability to be active at a later time
6. a mass of stones that is falling or has already fallen
9. a mass of rock and earth moving suddenly and quickly down a steep slope
12. a sudden strong wind
13. a period of time such as a few weeks when the weather is much hotter than usual
14. the very large area of land in North Asia, North America, and northern Europe where, because it is cold, trees do not grow and ground below the surface is permanently frozen
15. the large size or importance of something

1. a violent and often destructive storm in which the wind moves very fast in a circular direction
3. the scientific study of the sudden, violent movements of the earth connected with earthquakes
5. a large amount of ice, snow, and rock falling quickly down the side of a mountain
7. a metal object, usually with a part shaped like an arrow, that is put on top of a high building and turns to show which way the wind is blowing from
8. a flash of bright light in the sky that is produced by electricity moving between clouds or from clouds to the ground
10. very dry and without enough rain for plants
11. relating to the North or South Pole or the areas around them