| A | B |
|---|
| John Wesley Powell | Famous explorer of the Grand Canyon |
| Erosion tools carried by Colorado River | Sand, Gravel, and Boulders |
| The effect of wind erosion | smooth canyon rock walls |
| erosion | wearing away |
| adobe | mud brick |
| Anasazi | ancient Indian tribe |
| Pueblo | modern Indian tribe |
| Theodore Roosevelt | made Grand Canyon a national park |
| What the Spanish explorers were searching for | gold |
| Greatest depth of the Grand Canyon | 6,000 ft deep |
| Length of the Grand Canyon | 277 miles long |
| Greatest width of Grand Canyon | 18 miles across |
| national park | land protected by the US Government |
| arid | climate that is dry but not a desert |
| desert climate | less than 10 inches of rain per year |
| Oklahoma & Texas natural disaster | Tornadoes |
| Senoran desert | world'swettest desert |
| savanna | dry, grassy plain |
| saquaro | world's tallest cactus |
| gusher | an oil well that produces a large amount of oil |
| refinery | factory that cleans, separates the chemicals of crude oil |
| Oil effect on Texas | many people came and business grew quickly |
| nonrenewable resource | cannot be replaced by nature |
| river that carved out the Grand canyon | Colorado River |
| ways cactus plants survive | shallow roots for rain water, stores water in branches and trunk |
| technological industries | aircraft, missles, computers, Space program |
