22 terms

Earth's Changing Surface

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Terms in this set (...)

River
A body of flowing water that empties into an ocean, valley, lake or another river.
valley
Low land that runs between mountains and hills.
canyon
A DEEP valley with steep sides shaped by WATER.
sand dune
A hill or ridge of loose sand formed by the wind.
mountain
A part of the earth's crust that has been raised high above the surrounding lowlands. (At least 985 feet)
physical model
An object that represents something that is similar to the real thing in many ways, but is different in some ways.
landform
A part of the earth's surface that has a unique shape, is easy to recognize, and was created by nature.
delta
A landform at the the mouth of a river made by sand, silt, soil and rocks deposited by moving water.
deposition
The process in which water, wind or ice build up the earth's surface by dropping sediment in new locations.
landscape
A large area of land that includes a wide variety of surface features, such as hills, valleys and rivers
feature
A noticeable characteristic or trait
riverbank
The sides of a river
source
where a river begins
mouth
where a river meets a lake, valley or ocean
sediment
materials such as sand, silt soil and rocks that have been carried along and deposited by water, wind or ice
river
a body of flowing water that empties into an ocean, valley, lake or another river
riverbed
the bottom of a river
erosion
the process in which gravity, water, ice and wind move sediment from one place to another on the earth's surface
slope
the inclined surface of a hill or mountain
volcanoes
an opening in the Earth's crust through which molten lava, ash, and gases are ejected.
earthquake
Shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity
Can be constructive and destructive
flood
An overflowing of a large amount of water beyond its normal confines, esp. over what is normally dry land
Can create additional landforms such as lakes, rivers, new deposits of sediment like sandbars

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