Landforms. Rivers and streams. Erosion – the process of water (wind or ice) wearing or washing away earth material. Large volumes of earth material wash away more earth material Fast water increases the amount of erosion and moves earth material farther. Desposition.
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The process where earth materials are picked up by water, wind or ice and put down in another place.
Boulders, rocks, pebbles, sand, silt, clay
Clay is deposited on the banks of slow moving streams.
The Hudson River flows from the Adirondack Mountains through New York State to the Atlantic Ocean.
a. Its mouth (near New York City) is below sea level so it is affected by tides and is salty.
b. It flows through steep rock cliffs called palisades.
c. It provided waterpower for lumber and textile mills.
d. The Erie Canal connects the Hudson with Lake Erie
Formed the Grand Canyon
Provides water and power (Hoover Dam) for much of the Southwest.
grid lines are often used on maps.
They allow easy reference points and make it easier to enlarge
And shrink maps.
The gridlines are labeled with an X and Y axis.
Contour lines- lines that connect points of equal elevation
Contour interval- difference in elevation between contour lines-the closer the lines, the steeper the slope.
Bar scale- shows the relationship between the distances on the map and the distance on the ground
Scale: Ratio or fraction showing the distance on the map compared to the distance on the ground. (Representative fraction)
The distance, elevation, position, and boundaries are measured by a surveyor.
A surveyor puts permanent markers in place called benchmarks to show elevation and location.
0 elevation is sea level