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38 Cards in this Set
- Front
- Back
The surface of the earth is always changing - True or False
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True
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Most changes on the surface of the earth happens (slowly or rapidly) ?
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Slowly
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True or False - Volcanoes and earthquakes can push land upward.
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True
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True or False - Weathering occurs when wind, water or plants breakdown or change rocks.
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True
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True or False - As plant roots grow, they can break rock
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True
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Many landforms are a result of upward forces and forces that ____ ____ the earth's surface.
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Push upward
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The process of breaking down and changing rocks is called_____.
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Weathering
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Decayed plant and animal material is called______
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Humus
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Soil is made of weathered rock, _____, air, and humus.
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water
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Name 4 things that make up soil.
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1.weathered rock
2. water 3. air 4. humus |
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Name the 3 sizes of weathered rock found in soil.
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1. sand
2. silt 3. clay |
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Shapes of land, such as mountains and canyons are called _______.
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Land forms
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______ is the layer in which most plants grow.
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Topsoil
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______ is the layer that is mostly coarse, weathered rocks without humus.
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Subsoil
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______ is the solid, unweathered rock under the layers of soil.
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Bedrock
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______ is the layer that contains humus.
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Topsoil
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______ is the force that wears away the earth's surface.
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Weathering
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______ ______ happens when water seeps into holes and cracks in rocks and then freezes and expands, breaking up the rocks.
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Frost Action
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_____ happens as water or wind gradually wears away rock by FRICTION.
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Abrasion
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______ is the loose material at the surface of the earth.
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Soil
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The movement of wearthered material from one place to another is called______.
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Erosion
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Water and wind can easily erode ______ _____ , the layer of soil needed for many plants to grow.
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Top Soil
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An area of sediment formed at the mouth of a river is called a ______.
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Sediment
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A huge river of ice moving slowly downhill is called a _______.
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Glacier
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______ occurs when wind, water, or ice drop weathered material in a new location
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Deposition
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A sudden downhill movement of soil and rocks is called a _____.
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Landslide
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A sudden downhill movement of snow and ice is called an_____.
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Avalanche
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Small bits of weathered rock and other material are called_____.
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Sediment
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_____ can cause canyons and gorges.
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Water erosion
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______ can cause hills called moraines.
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Glaciers
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____can cause hills called dunes.
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Wind erosion
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_____ can cause valleys where ponds and lakes form.
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Glaciers
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True or False - Erosion can be caused by water, wind or ice.
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True
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Deposited sediment makes the mouth of a river deeper or shallower?
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Shallower
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Erosion can happen slowly or quickly?
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Slowly
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Gravity causes water to flow uphill or downhill?
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Downhill
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Glaciers can pick up ____ and ___.
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Sediment and Rocks
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What force affects erosion?
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Gravity
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