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29 Cards in this Set
- Front
- Back
The mechanism of wind erosion in which loose particles of sand and dust are picked up and removed, leaving behind only coarser particles, is called?
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Deflation
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Foredunes are critical to the preservation of the integrity of many beaches, but they must maintain
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grass with a few other species of plants (vegetation) on their surfaces to remain stable.
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How does the ability of wind to transport materials compare to other mechanism in the Earth system?
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greater than liquid because of the greater density of the atmosphere
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Which of the following conditions would limit the effectiveness of wind erosion?
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Dislodge mineral matter from surfaces of unweathered rock from moist bclay rich soil or from soil bound by a dense plant cover.
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Why are smaller particles of sedimentary material often hard for wind to move?
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they are cohesive
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What term best describes the individual lifting and transportation of individual particles of particles by wind?
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Aeolian transportation
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Desert pavements are best characterized by:
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closely fitted rock fragments
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When wind-blown particles act to sandblast a natural surface, this is best described as _____
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WIND ABRASION
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The reduction of land-surface elevation due to the lifting and removal of particles by wind is termed ________, while the aggressive act of sandblasting an exposed surface by the action of wind is described as ____________.
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saltation,
WIND ABRASION |
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Sometimes rocks are grooved and polished by wind driven abrasion, these examples are often referred to as
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Aeolian Erosion, ventifact
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A ___________ may result from the suspension of fine particles of sediment by wind over significant distances.
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DUST STORMS
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Complete the following statement with the correct terms. Clay is ______ to lift from a surface, and/but ______ to keep suspended in the air.
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difficult
easy |
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Small scale crescent-shaped dunes are described as:
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transverse dunes
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Crescent-shaped dunes that are stabilized by vegetation growth are called:
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PARABOLIC
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The largest scale sand dunes are called:
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star dunes
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Loess deposits are typically composed of:
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SILT AND CLAY
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In which of the following regions of the US is wind driven erosion most effective?
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Deflation zones California Mojave Desert/ SW US
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Corals have a symbiotic relationship with _______
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algae
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The process by which wave energy pulls material back down the shoreface after the swash is referred to as ________
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Backwash
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A long, narrow, sandy island lying offshore and parallel to a lowland coast is a ________.
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barrier island
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Tall, offshore spires rising up from the water in front of marine cliffs are typically referred to as ________.
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stacks
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Wave-washed sediment along a coast forms a ______
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SHORELINE/Beach
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What part of Mexico has some of the most extensive karst geography in the world?
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Baja California and Yucatan Peninsula
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What proportion of the Earth’s water is fresh?
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3% is Fresh Water and 97% Salty.
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What is the oldest lake in the world?
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(Lake Baikal).
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What is the largest lake in the world?
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Caspian Sea)
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Largest salt water
largest fresh water |
Caspian Sea)
(Lake Baikal). |
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Landscapes with a large amount of relief tend to increase the _____ of materials, causing them to have more _________ energy when they are weathered and transported downhill.
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erosion height;
kinetic |
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In areas of high rainfall where soil is thin over bedrock and in areas where the ground is frozen to depth, slow slurry flows can occur through a process called
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-Solifluction
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