Weathering, Erosion, and Mass movement

If a mineral changes to a different type it has experienced

• erosion
• physical weathering 
• chemical weathering
• transportation

What are the four agents of erosion?

• gravity, soil, landslides, water
• wind, water, landslides, organisms
• organisms, glaciers, wind, water
• glaciers, gravity, air, soil

Which layer of soil would you find the largest amount of organic material?

• A horizon
• B horizon
• C horizon
• O horizon

Soil made from the bedrock that lies beneath it is

• transported soil
• residual soil
• weathered soil
• eroded soil

Soil scientists study the layers of soil that together are called

• transported soil
• residual soil
• soil horizons
• soil profile

What will happen to the cracks inside the rocks once the pressure exerted on it is removed?

• The cracks will disappear
• The cracks will shrink, but not disappear entirely
• The cracks will expand
• The cracks will not change

Which of the following is NOT a way that water can cause chemical weathering?

• Act as a medium for another chemical
• Erode small pieces of the rock
• Dissolve minerals
• Break down large molecules into smaller ones

What type of weathering most likely caused this?

• Mechanical Weathering
• Chemical weathering
• Mechanical and Chemical weathering
• Physical and chemical weathering

Why do we need wind barriers?

• To prevent wind erosion from hitting structures and wearing them down
• To protect trees from being blown over by wind
• To prevent sediment from being blown around and to protect the ground
• All of the above

What effect do organisms have on soils?

• They add nutrients to the soil
• They provide a passage for air and water
• They break up the pieces of soil into finer pieces
• all of the above