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Weathering and Erosion
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A process that breaks up rocks, but does not change the chemical composition of the rock.
physical weathering
Acid rain breaks down rocks chemically, biologically, or physically?
Chemically
Burrowing animals weather chemically, biologically, or physically?
biologically
freeze-thaw is chemical, biological or physical?
physical
Breaking down rocks is known as:
weathering
medium-sized sediments carried close to the ground and move in short hops
saltation
Small sediments carried high in the air move by:
suspension
Wind-blown sand polishes rocks in a process known as:
Abrasion
Large sediments are pushed along the ground by wind in a process known as:
traction
True or false? Slump creates crescent-shaped scars.
True
The gradual movement of soil downhill is called:
creep
What type of soil typically is responsible for a mudslide
clay
True or false? Landslides cause a tiny amount of damage compared to other natural disasters.
False
True or false? An earthquake can trigger a landslide.
True
sediments frozen to the bottom of a glacier scrape the underlying rock
abrasion
Name the two ways glaciers erode
plucking and abrasion
What is it called when sediments are picked up by glaciers and freeze to the bottom?
plucking
when a cliff is eroded on both sides by waves forming a hole, this forms
sea arch
erosion of a sea arch can form a:
sea stack
pillars of rock left behind by wave erosion
sea stacks
movement of large particles that roll along the bottom of a body of water
traction
Weathering due to????
acid rain
movement of larger particles that move in little jumps near the bottom of a stream
saltation
Small particles are carried and stay mixed with water
suspension
True or false? Runoff causes erosion.
True
True or false? Gravity causes water to flow from higher to lower ground.
True