| Butte | Question: A hill with a flat top that is smaller than a mesa | 1 | 1 | false |
| underground | A fuel formed _____ from dead plants | 2 | 0 | true |
| crude oil | Question: The form of petroleum that bubbles up from the ground. | 3 | 1 | false |
| Houston | Question: Today this city is our nation's top oil-refininf center. | 4 | 1 | false |
| adaptation | Question: Changing in order to survive in a certain environment. | 5 | 1 | false |
| dry farming | Question: A way to grow crops with only rain water. | 6 | 1 | false |
| aquifer | Question: An underground layer of rock or gravel that traps water | 7 | 1 | false |
| Dust Bowl | Question: An area of the Great Plains devastated by droughts and dust storms in the 1930's | 8 | 1 | false |
| 10 inches | Question: By definition, the amount of rain that falls each year in a desert is less than what? | 9 | 1 | false |
| Texas | Question: Patillo Higgins discovered oil in this state in 1901. | 10 | 1 | false |
| mesa | Question: A hill with a flat top | 11 | 1 | false |
| Sonoran Desert | Question: Giant cactus trees called saguaros grow in this area in Arizona. | 12 | 1 | false |
| Tulsa | Question: In 1905 a drilling crew found oil near this city in Oklahoma. | 13 | 1 | false |
| petrochemical | Question: A chemical made from petroleum | 14 | 1 | false |
| valley | Deep, narrow _____ that stretches 217 miles through northern Arizona | 15 | 0 | true |
| erosion | Question: The process of water, wind, and ice slowly carrying away rock and soil | 16 | 1 | false |
| canyon | Question: A deep, narrow valley with steep sides | 17 | 1 | false |
| water | Question: An aquifer is a source of what? | 18 | 1 | false |
| refinery | Question: A factory where crude oil is separated into parts that can be used | 19 | 1 | false |
| the Dust Bowl | Question: Farmers plowing up prairie grass by planting wheat was one cause of what event in the 1930's? | 20 | 1 | false |
