The Dust Bowl

2. manmade methods used to water crops
4. The source of the nickname, 'Okies'
5. A grassland plateau located in North America, particularly the United States, west of the Mississippi River yet east of the Rocky Mountains
7. (abbreviation) an index used to measure droughts using precipitation amounts
9. A deficiency of precipitation that leads to dry conditions and sometimes extreme weather, like wildfires or dust storms.
10. A large wall of wind that carries dust, dirt, and other debris through the air.
11. A nickname for those who fled the Dust Bowl area, particularly into California.

1. the uppermost layer of soil
3. An economic low point that occurred worldwide
6. A period of drought and dust storms that battered the Great Plains through the 1930's
7. The erosion of fertile topsoil
8. (abbreviation) another index used to measure droughts using soil moisture, temperature, precipitation, and other factors.