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18 terms

Landforms/Slow and Fast changes to Earth

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Weathering
Earth materials, for example rocks are being broken apart. Little or big cracks in the rock are evidence that this is taking place.
Erosion
Earth materials, like rock, sand, and soil, are being carried away from their original location. Water and wind are often the causes for this.
Deposition
Earth materials that have been eroded are put in a new location. When the wind stops blowing, sand and soil may be put down in piles as large as dunes. Water may deposit its material at the end of a river and form a delta.
Landslides
Earth materials, like rock, sand, and soil, on the side of a slope or cliff drop down to a lower location. Water soaking into the ground often makes this happen.
Volcanic Eruptions
Earth material called lava comes out of the volcano flows down the side of the volcanic mountain (or is sent up into the air and lands nearby) where it hardens. The hardened volcanic rock forms new Earth material and often makes the volcanic mountain larger.
Floods
A lot of water causes rivers and streams to overflow their banks over the surrounding land around them. Heavy rainfall in the area is usually the cause of this.
Earthquakes
When this is occurring, the surface of the ground shakes and rolls causing damage to the Earth's surface, like cracks and other openings, and damage to roads and buildings
Oceans
large bodies of salt water that surrounds a continent.
Seas
large bodies of salt water that is often connected to an ocean. This may be partly or completely surrounded by land.
Rivers
large, flowing bodies of fresh water that usually empty into a sea or ocean.
Streams
small, flowing bodies of fresh water that flow into rivers.
Lakes& ponds
areas where water, usually freshwater, are surrounded by land; differ in size with ponds usually being smaller than lakes.
Glaciers
huge sheets of ice that cover land. They are found where temperatures are very cold, for example, high in the mountains or near the poles of Earth.
Volcanoes
An opening in Earth's surface from which lava flows. As the lava hardens and builds up, a volcanic mountain forms.
Mountains
A place on Earth's surface where the land is much higher than the land that surrounds it. can be tall and rocky and others are rounded and covered with trees. the area that has a flat top is called a plateau.
Valleys
A lowland area between higher areas such as mountains. Sometimes rivers can wear away land to form these
Canyons
A deep valley with very steep sides. They are often carved from the Earth by a river.
Caverns
A large cave or underground chamber, and are formed underground when water wears away the rock.