Weathering
What is weathering?
The breaking down of rock into smaller pieces
What is the definition of erosion?
When wind, water, ice or gravity move soil from one place to another
The amount of each kind of particle in the soil makes up this.
soil texture
________________ is the process of breaking down the lithosphere by wind, water, ice plants, animals or chemical change.
weathering
Layers of soil are called what?
Horizons
What are the two types of weathering?
mechanical weathering and chemical weathering
What is the main agent of erosion that changes the surface of the earth?
Erosion by water
Mixture of weathered rock, decayed organic material, mineral fragments, water, and air is called ___________.
soil
_______________ is all the layers that make up the soil in an area.
A soil profile
Ice wedging is a form of erosion caused by ___________.
water freezing and thawing
Name at least two kinds of mechanical weathering
ice wedging, abrasion, plant or animal action
A landslide is an example of erosion caused by __________.
gravity
The material that has decaying plant and animal remains is called ___________________.
humus
This algae/fungus type of plant causes chemical weathering through the acid in its roots
lichens
Which kind of climate causes the fastest rate of weathering?
hot and wet
Name at least two kinds of chemical weathering.
What is oxidation (rust), acid rain, or lichens
An agent of erosion that causes a sand dune to move from one place to another is ____________.
wind
How does the formation of soil start?
by the weathering of bedrock
This is the process in which sediment is dropped in another location.
deposition
_____________ is a chemical weathering process that occurs as minerals are exposed to air and water, and causes some metals (such as iron) to rust?
oxidation
Name two things that affect the rate of weathering.
the type of rock, and climate
Name four agents of erosion.
water, ice, wind, and gravity
What is the largest and smallest particle size of soil?
The largest is gravel, the smallest is clay
___________ is a type of mechanical weathering which is the wearing away by solid particles carried by wind, water or other forces.
abrasion
Acid rain slowly dissolves statues and buildings. What is this action a good example of?
chemical weathering