Glacial Erosion and Movement Quiz

What is the process called when rocks attached to bedrock or sides become frozen to the glacier and are pulled from the landscape when the glacier moves?

• Frost Action

• Plucking

• Nivation

• Abrasion

What causes a sandpapering effect on bedrock due to small rocks embedded within the glacier rubbing on it?

• Nivation

• Frost Action

• Abrasion

• Plucking

Which process involves water getting into the cracks of rocks, freezing, and then expanding by around 10%?

• Abrasion

• Nivation

• Frost Action

• Plucking

What is the collective term for processes involving snow and ice that cause erosion?

• Abrasion

• Plucking

• Nivation

• Frost Action

What is the deformation of layers of ice or individual ice crystals caused by the pressure from the weight of the ice?

• Compressional Flow

• Rotational Slip

• Extensional Flow

• Internal Deformation

When ice hits a shallower gradient, what causes the ice to slow down, build up, and compress?

• Rotational Slip

• Extensional Flow

• Compressional Flow

• Internal Deformation

When ice meets a steep downhill gradient, what forces the ice to increase in velocity?

• Internal Deformation

• Rotational Slip

• Compressional Flow

• Extensional Flow

What causes compressed ice to become trapped in a hollow, but gravity causes it to continue to move downwards?

• Internal Deformation

• Compressional Flow

• Extensional Flow

• Rotational Slip

What is the process called when a glacier slides over the bedrock due to meltwater providing lubrication?

• Extensional Flow

• Compressional Flow

• Rotational Slip

• Basal Sliding

What would lead to more basal sliding to occur in a glacial environment?

• Colder temperatures

• Heavier glacier mass

• Steeper relief

• Warmer temperatures