Soil is the thin layer of material that covers Earth’s surface. How is soil related to bedrock?(1 point)
Responses
Soil forms below the bedrock.
Soil forms below the bedrock.
Bedrock hardens to form soil.
Bedrock hardens to form soil.
Soil forms from the weathering of bedrock.
Soil forms from the weathering of bedrock.
Bedrock is one of four soil components.
Soil forms from the weathering of bedrock.
Soil forms from the weathering of bedrock.
The correct answer is: Soil forms from the weathering of bedrock.
To understand how soil is related to bedrock, we need to understand the process of weathering. Weathering is the breakdown of rocks into smaller particles, and it happens due to various factors such as temperature changes, frost action, and chemical processes.
Bedrock is the solid rock layer that lies underneath the soil. Over time, the forces of weathering break down the bedrock into smaller fragments. These fragments then mix with other materials like organic matter, minerals, water, and air to form soil.
The weathering process is caused by physical and chemical processes that weaken the bedrock and gradually transform it into soil. Physical weathering includes factors like temperature changes, freeze-thaw action, and abrasion, while chemical weathering involves processes like dissolution, oxidation, and hydrolysis.
As a result of weathering, the bedrock gradually breaks down into smaller particles, and these particles mix with other substances to create soil. Therefore, soil is closely related to bedrock as it forms from the weathering of the bedrock over time.
What is the correct order of the particles that give texture to soil from smallest to largest?(1 point)
Responses
silt, sand, clay
silt, sand, clay
clay, sand, silt
clay, sand, silt
sand, silt, clay
sand, silt, clay
clay, silt, sand
The correct order of the particles that give texture to soil from smallest to largest is: clay, silt, sand.
Which phrase best describes soil?(1 point)
Responses
unconsolidated material that contains nutrient matter and weathered rock
unconsolidated material that contains nutrient matter and weathered rock
consolidated material that contains nutrient matter and weathered rock
consolidated material that contains nutrient matter and weathered rock
unconsolidated material that contains nutrient matter and bedrock
unconsolidated material that contains nutrient matter and bedrock
consolidated material that contains nutrient matter and bedrock
consolidated material that contains nutrient matter and bedrock
The phrase that best describes soil is: unconsolidated material that contains nutrient matter and weathered rock.
Which layer of soil determines how fertile the soil is?(1 point)
Responses
topsoil
topsoil
subsoil
subsoil
bedrock
bedrock
humus