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20 Cards in this Set
- Front
- Back
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Continental Divide |
an imaginary line that runs north and south along the highest points of the Rocky Mountains |
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Earthquake |
a sudden shaking of the ground caused by the movement and cracking of rock deep inside the Earth. |
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Volcano |
an opening in the Earth's surface out of which hot gases, ash, and lava may pour. |
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Timberline |
on a mountain, the elevation above which the temperatures are too low for trees to grow. |
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Fault |
a crack in the Earth's surface |
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Barrier |
something that blocks the way or makes it hard to move from place to place |
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Forty-niner |
a person who went to California in 1849 to search for gold |
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Transcontinental railroad |
a railroad that crosses the North American continent, linking the Atlantic and Pacific coasts. |
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Public Land |
land that is owned by the government |
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Ecosystem |
the relationship between living things and their nonliving environment |
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Alaska |
state with the highest land in North America (Mt. McKinley) |
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Telegraph |
a new form of communication that replaced the Pony Express |
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Mount Waialeale |
Wettest place in the U.S. |
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Death Valley |
lowest, hottest, and driest place in the U.S. |
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Rocky Mountains |
formed the greatest barrier to the early explorers and settlers in the West |
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Sacagawea |
served as a guide on Lewis and Clark's journey |
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Earthquakes |
caused by movement along a fault |
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Landform that covers much of the Great Basin |
desert |
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Yellowstone |
first national park in the U.S. |
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Rocky Mountains |
highest mountain range in the West |
