Weathering
Temperature changes, animal actions, and plant growth are all agents of what type of weathering?
Physical Weathering
A stream that empties into a body of water in a fan-shaped pattern is known as what landform?
Delta
What is Erosion?
What is the process of moving sediment from one place to another by wind, water, ice, or even gravity.
The lowest horizon in soil, which is where all weathering begins is known as________________.
Bedrock
What do both erosion and deposition do to Earth's surface?
They both change Earth's surface.
After weathering occurs, what is left over from the rocks that have been broken down?
Sediment
Which of the following are erosion processes?
A. Mass Movements.
B. Rocks abrading other rocks.
C. Currents and waves changing a shoreline.
D. Movement of sediment by wind.
A, C, and D
Abrasion is a form of physical weathering
Define weathering?
Weathering is the process of breaking down and weakening Earth's crust into sediment.
Explain humus.
Decayed plant and animals found in topsoil.
Are erosion and weathering dependent on one another? Explain
Yes- They both need to occur for the cycle to continue.
Georgia's red clay soil is the result of what specific type of weathering.
Reaction with oxygen, oxidation
Mounds of wind-deposited sand that form along shores of lakes and oceans are known as what landform?
Dunes
What is abrasion?
A type of physical weathering that occurs when one rock breaks down another rock into sediments.
What is a diagram showing all layers of soil in a particular climate?
A soil profile
What separates the two types of mass movements?
What specific type of weathering causes rocks that have tumbled in moving water to become smooth?
Abrasion
Explain how glaciers contribute to deposition.
As glaciers melt, they drop materials that it carried.
Extremely slow movement downslope is know as___________.
Creep.
What is a layer of soil, which has different physical properties?
A soil horizon
Glaciers seem to be stable, but they are actually shaping Earth's surface. Explain.
As glaciers move forward they scratch and abrade rock picking up sediment along the path. When glaciers melt they deposit the materials it carried. This changes Earth's surface.
State why some rocks are weathered more easily than other rocks.
Softer rocks are weathered more easily than harder rocks; some rocks react with acids, some rocks are more porous.
While driving on vacation, you noticed large rocks and boulders that blocked passage. This is an example of what type of erosion?
Rapid mass movement.
When a stream flows onto a flat land surface from mountains or hills, what landform is created?
Alluvial fan.
Explain the difference between bedrock and parent rock.
Parent rock is slightly weathered bedrock.
Beach erosion cannot be controlled, can it?
Yes. Residents can put in plants, fencing, and other structures to create dunes or block wind. They can also put up temporary structures such as sandbags when storms are due to arrive on the coast.