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Glaciers
Deserts
Wind Erosion
Wind Deposition
Vocabulary
100
The amount of ice currently covering the earth
What is 10 percent?
100
This process is responsible for the rust colored sand in most deserts.
What is chemical weathering?
100
This process causes polishing or cutting of rocks.
What is abrasion?
100
Sand dunes that form scalloped rows of sand at right angles to the wind are called
What are barchanoid dunes?
100
Dry, flat lake beds found on arid regions are called
What are playas?
200
During the most recent Ice Age, this much of the earth was covered by ice
What is 30 percent?
200
This type of weathering is most prominent in deserts.
What is mechanical weathering?
200
This is the lifting and removal of loose particles such as clay and silt
What is deflation?
200
If the steep face of a sand dune is on the southeast side of the dune, then the prevailing wind in this area is from the ____.
What is the northwest?
200
The term used to describe all sediments of glacial origin
What is glacial drift?
300
This type of glacier is the largest and moves in all directions
What is an ice sheet?
300
This process is responsible for the formation of desert pavement.
What is deflation?
300
These are known as the two types of wind erosion.
What are deflation and abrasion?
300
Dunes whose tips point into the wind
What is parabolic dunes?
300
Windblown silt that blankets a landscape is called
What is loess?
400
The movement of glaciers is referred to as
What is flow?
400
In deserts, a lack of __________ can allow heavy rainfall to cause extreme erosion.
What is vegetation?
400
This is a shallow depression caused by deflation.
What is a blowout?
400
The shape of ________ dunes is mostly due to varying wind directions.
What is star?
400
A cone of debris found at the mouth of a canyon in an arid climate is known as
What is an alluvial fan?
500
Icebergs are produced through a process called
What is calving?
500
In the desert, streams that run only after it rains are called
What is ephemeral streams?
500
Sand rarely travels more than a meter above the surface, limiting the wind's sandblasting effect in the _________ direction.
What is vertical?
500
Over time, sand dunes tend to migrate in the _____ direction that the wind blows.
What is the same?
500
The moraine that marks the farthest advance of a glacier is called
What is the terminal end moraine?