Shaping Earth's Crust Part 1
Soil Profile
Arrangement of horizons in a soil sample.
Weathering:
Breakdown and change of rocks and minerals over time.
Which soil horizon is located closest to the earth's crust?
C horizon
_______________ cause ice erosion
Glaciers
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
Dissolution
Process of dissolving
How does oxidation weather rocks?
The removal of electrons causes the rock to weaken.
Erosion
Transport and deposition of weathered rock.
What is the cycling of nutrients between the ground and living organisms?
When nutrients from the ground are taken by living organism and returned when those organisms die and decompose.
Which of the following statements is true?
Wind erosion is most problematic in dry climates.
During deposition, _____.
sediment is dropped off at a new location
Which of the following is caused by wind erosion?
topsoil removal
Frost wedging weathers rock because _____.
water expands when it freezes
Oxidation
Chemical reaction in which mineral are weakened by oxygen.
Hydrolysis
Chemical reaction involving ions in water (OH- and H+)
Topography
Elevation and slope of land
Plucking is caused by _____.
Ice
Why is wind erosion so harmful?
It removes the most fertile part of soil.
Deposition
Placement of weathered rock and sediment by erosion
Medium
Substance which enables the transport of weathered rock and sediment.
How are the O and A horizons similar?
The both contain organic material.
Soil
Top layer of mineral and organic material on Earth's surface.
Delta
Triangular deposition of fine, fertile soil at the mouth of a river.
Abraision
Wearing away or grinding by friction.
Which of the following is an example of physical weathering?
abrasion
Choose all the answers that apply. Soil is made of _____.
air water organic material minerals weathered rock
Jonah finds a rusty nail outside. The nail is an example of _____.
chemical weathering
Which of the following is a constructive process?
deposition
Carbonic acid _____.
dissolves limestone and other rocks.
Acidic soil is caused by _____.
hydrogen ions (H+)
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
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
During detachment, _____.
rock fragments are picked up by wind, water, or ice.
