Landforms
a flat area of land next to a river or stream that can flood
Floodplain
When rocks are broken into smaller pieces called sediment, sand, pebbles, or silt.
Weathering
An opening in the Earth's crust where magma can come out.
Volcano
The very top layer of soil. It is made of rotting plants.
Humus
a strip of land that borders a body of water such as a lake, river, or ocean
Beach
Is weathering a slow or rapid change?
Slow change
An underground earthquake or volcano beneath the ocean
Tsunami
The second layer of soil. It contains the roots of plants and plant and animal remains that bacteria and fungi are working to break down.
Topsoil
a ridge of sand that is partially or completely underwater
Sandbar
Is erosion a slow or rapid change?
Slow change
Do rapid changes build up or wear down the Earth?
Rapid changes build up the Earth
The third layer of soil. It has plenty of minerals washed down from the layer above.
Subsoil.
a low area of land between hills or mountains that usually have a river running through them
Valley
Slow changes wear down the Earth
The type of rapid change where the shaking of the ground is caused by sudden breaking and movement of large sections of the Earth's crust.
Earthquake
The bottom layer of soil. It is made up of hard, solid rock.
Bedrock
a very deep valley with steep sides
Canyon
The moving of the small pieces created by weathering.
What are the four types of rapid changes?
Bits and pieces of other rocks, minerals, plant/animal remains
Sediments