The process that occurs when physical forces break rock into smaller pieces without changing the rock’s chemical composition is called ____.
What is mechanical weathering?
100
The factor that has the greatest effect on soil formation is ____.
What is climate?
100
What is the correct order for water eroding soil?
What is sheet erosion, rills, gullies?
100
What is the slowest type of mass movement?
What is creep?
100
What is responsible for the formation of exfoliation domes?
What is unloading?
200
Which of the following weathering processes involves the constant freezing and thawing of water?
What is frost wedging?
200
A soil's texture is determined by ___.
What is particle size?
200
The process responsible for moving material downslope under the influence of gravity is called ______.
What is mass movement?
200
A relatively rapid form of mass movement that is most common in dry mountainous regions is ____.
What is mudflow?
200
What type of mechanical weathering is most common in mountainous regions in the middle latitudes?
What is frost wedging?
300
The chemical weathering of feldspar produces ____.
What is clay minerals?
300
In a well-developed soil profile, which horizon is the uppermost layer?
What is the A horizon?
300
Why can the removal of vegetation trigger mass movements?
a. The soil loses nutrients and begins to crumble.
b. The plant roots bind the soil and regolith together.
c. The shaking triggers mass movements.
d. The plant roots lubricate the loose sediment.
What is B?
300
Alternate freezing and thawing often leads to ____.
What is a creep?
300
What kind of material is found in the C horizon of a soil profile?
What is partially weathered parent material?
400
The atmospheric gas that forms a mild acid when dissolved in water is ____.
What is carbon dioxide?
400
The B horizon is also called the ____.
What is subsoil?
400
A mass movement that involves the sudden movement of a block of material along a flat, inclined surface is called a ____.
What is slide?
400
The gradual rounding of the corners and edges of angular blocks of rock is called ____.
What is spheroidal weathering?
400
A soil associated with the hot and wet tropics is ____.
What is laterite?
500
Rock features such as the sculpted pinnacles seen in Bryce Canyon National Park are the result of ____.
What is differential weathering?
500
A soil that is characteristic of the humid eastern United States is ____.
What is pedalfer?
500
When a block of material moves downslope along a curved surface, the type of mass movement is called ____.
What is a slump?
500
Whenever the characteristics and chemical composition of weathered materials have been altered, they have undergone ____.