Quiz 1: Shaping The Surface
Which soil horizon is located closest to the earth's crust?
C horizon
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.
Cycling nutrients between living organisms and the ground determines soil fertility.
True
Which of the following statements is true?
Wind erosion is most problematic in dry climates
Soil is made of ______
air water organic material minerals weathered rock
soil profile
arrangement of horizons in a soil sample
Which of the following is a constructive process?
deposition
Plucking is caused by _____.
ice
dissolution
process of dissolving
medium
substance which enables the transport of weathered rock and sediment
Acidic soil is caused by _____.
Hydrogen ions (H+)
topography
elevation and slope of land
Which of the following is an example of biological weathering?
plant roots growing through rock
Which of the following would have the greatest influence on soil formation?
rainfall
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
delta
triangular deposition of fine, fertile soil at the mouth of a river
Frost wedging weathers rock because _____.
water expands when it freezes
abrasion
wearing away or grinding by friction
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.
Which of the following locations would have the slowest rate of weathering?
North Pole
hydrolysis
chemical reaction involving ions in water (OH- and H+)
Jonah finds a rusty nail outside. The nail is an example of _____.
chemical weathering
Carbonic acid _____.
dissolves limestone and other rocks
_________ cause ice erosion.
glaciers
Silicate rocks are weathered by __________ into the clay minerals.
hydrolysis
horizon
layer of distinct soil
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
deposition
placement of weathered rock and sediment by erosion
During detachment, _____.
rock fragments are picked up by wind, water, or ice
During deposition, _____.
sediment is dropped off at a new location
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
