Which phrase best describes frost wedging?(1 point)
Responses
a type of physical weathering that occurs due to temperature changes
a type of physical weathering that occurs due to temperature changes
a type of physical weathering that occurs due to friction
a type of physical weathering that occurs due to friction
a type of erosion that occurs due to friction
a type of erosion that occurs due to friction
a type of erosion that occurs due to temperature changes
a type of physical weathering that occurs due to temperature changes
Does the environment affect the soil?(1 point)
Responses
Yes, it affects particle size and soil composition.
Yes, it affects particle size and soil composition.
No, because soil type is determined only by particle size.
No, because soil type is determined only by particle size.
Yes, but it only affects its particle size.
Yes, but it only affects its particle size.
No, because soil is the same in all environments.
Yes, it affects particle size and soil composition.
Why are farming practices like terraced fields important in terms of soil conservation?(1 point)
Responses
They prevent soil from eroding and becoming lost, which is essential because soil is a nonrenewable resource.
They prevent soil from eroding and becoming lost, which is essential because soil is a nonrenewable resource.
They help limit the amount of soil that is produced, which is essential because soil is a renewable resource.
They help limit the amount of soil that is produced, which is essential because soil is a renewable resource.
They cause nutrients in the soil to leak out, which is essential because plants need nutrient-poor soil.
They cause nutrients in the soil to leak out, which is essential because plants need nutrient-poor soil.
They remove pollutants from the soil, which is essential because living things depend on pollutant-free soil.
They remove pollutants from the soil, which is essential because living things depend on pollutant-free soil.
They prevent soil from eroding and becoming lost, which is essential because soil is a nonrenewable resource.
Which statement is correct?(1 point)
Responses
There is a thin layer of topsoil in temperate areas.
There is a thin layer of topsoil in temperate areas.
There is a thick layer of humus in dry deserts.
There is a thick layer of humus in dry deserts.
There is a thick layer of humus in cold deserts.
There is a thick layer of humus in cold deserts.
There is a thin layer of topsoil in tropical rain forests.
There is a thin layer of topsoil in tropical rain forests.
How is chemical weathering different from physical weathering?(1 point)
Responses
Chemical weathering forms new substances, while physical weathering does not.
Chemical weathering forms new substances, while physical weathering does not.
Chemical weathering results in the breakdown of rock, while physical weathering does not.
Chemical weathering results in the breakdown of rock, while physical weathering does not.
Chemical weathering requires a reaction with water, while physical weathering does not.
Chemical weathering requires a reaction with water, while physical weathering does not.
Chemical weathering involves plants and animals, while physical weathering does not.
Chemical weathering forms new substances, while physical weathering does not.
Why do scientists think the Grand Canyon was once covered by an ocean?(1 point)
Responses
The Grand Canyon is located along coastlines that likely flooded.
The Grand Canyon is located along coastlines that likely flooded.
Seawater has been found seeping up through the canyon floor.
Seawater has been found seeping up through the canyon floor.
Only an ocean would have the strength to erode the rock forming the Grand Canyon.
Only an ocean would have the strength to erode the rock forming the Grand Canyon.
The sedimentary rock type forming layers of the canyon formed under the sea.
The sedimentary rock type forming layers of the canyon formed under the sea.
What might cause a well to hold less water each year?(1 point)
Responses
An earthquake shifted the aquifer to a new spot.
An earthquake shifted the aquifer to a new spot.
The groundwater reaches freezing temperature.
The groundwater reaches freezing temperature.
The rocks in the well become harder.
The rocks in the well become harder.
The aquifer has slowly become dry over time.