weathering & erosion
Wind erosion is most problematic in dry climates
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Which soil horizon is located closest to the earth's crust?
C horizon
Which of the following locations would have the slowest rate of weathering?
North Pole
soil profile
arrangement of horizons in a soil sample
Carbonic acid_____.
dissolves limestone and other rocks
During deposition, _____.
sediment is dropped off at a new location
soil
top layer of mineral and organic material on Earth's surface
Which of the following is caused by wind erosion?
topsoil removal
erosion
transport and deposition of weathered rock
Frost wedging weathers rock because _____.
water expands when it freezes
abrasion
wearing away or grinding by friction
How does oxidation weather rocks?
The removal of electrons causes the rock to weaken.
How are the O and A horizons similar?
They both contain organic material.
hydrolysis
`chemical reaction involving ions in water (OH- and H+)
Jonah finds a rusty nail outside. The nail is an example of _____.
chemical weathering
Which of the following is a constructive process?
deposition
_____ cause ice erosion
glaciers
horizon
layer of distinct soil
Silicate rocks are weathered by_____into the clay minerals.
hydrolysis
deposition
placement of weathered rock and sediment by erosion
dissolution
process of dissolving
Which of the following would have the greatest influence on soil formation?
rainfall
delta
triangular deposition of fine, fertile soil at the mouth of a river
Why is wind erosion so harmful?
It removes the most fertile part of soil.
How does the Sun contribute to physical weathering?
Minerals in rocks heat and expand at different rates, which causes rocks to break.
topograhpy
elevation and slope of land
Acidic soil is caused by _____.
hydrogen ions (H+)
Plucking is caused by _____.
ice
rocks formed at high temperatures and pressures are_____weathered than rocks formed at low temperatures and pressures.
more easily
Which of the following locations would have the poorest quality soil?
mountain top
During detachment, _____.
rock fragments are picked up by wind, water, or ice
medium
substance which enables the transport of weathered rock and sediment
Which of the following is an example of physical weathering?
abrasion
weathering
breakdown and change of rocks and minerals over time
oxidation
chemical reaction in which minerals are weakened by oxygen
