We are learning that the Earth’s
surface has specific characteristics
and landforms.
We are looking for the names of the
Earth’s landforms.
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Landforms are created when weathering, erosion, and deposition breaks down or builds up
the earth’s surface.
Be able to describe and explain how landforms are created – Example – Canyons are deep,
narrow valleys with steep cliffs. They are formed by a river carving out and eroding the
land.
Examples of landforms – Canyon, Dune, Glacier, Island, Mountain, Plain, Plateau, River,
Valley, Volcano
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Weathering is the process of breaking down the earth’s surface
Two kinds of weathering –Physical(Mechanical) and Chemical
Physical Weathering is caused by wind, water, ice, plants, and/or animals
Chemical Weathering is caused by oxygen and/or acid
Materials weather slower or faster depending on how much surface area a materials has,
what it is made of, and the climate – Example – Limestone will not weather as quickly in a
hot, dry climate, but will weather quickly in a cool, wet climate
We are learning that the surface of
the Earth changes due to erosion.
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We are looking for the agents(water,
wind, ice, plants) that cause erosion
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Erosion is the process of moving away the weathered parts of the earth’s surface
Erosion can be a rapid process ( landslides, earthquakes, rockslides, volcanoes) or it can be
a slow process (wind moving sand, river wearing away land, wind smoothing out rocks,
water smoothing out rocks)
Agents of erosion are wind, water, plants, animals, and gravity
We are learning that the surface of
the Earth changes due to weathering.
We are looking for the weathering
processes that change the shape and
size of
rock.
We are learning that the surface of
the Earth changes due to deposition.
We are looking for landforms and
features formed as a result of
deposition.
- Deposition is the process of depositing or dropping the eroded parts of the earth’s
surface in another location
- Deposition can help to form certain landforms – Examples – Dunes, Marshes, Deltas, and
others