Glaciation Intro

What are the two main types of glacial erosion?

• Abrasion and plucking
• Plucking and freeze-thaw
• Chemical and biological
• Abrasion and hydraulic action

The process that breaks down rocks and other materials on Earth's surface is called

• weathering
• erosion
• soil conservation
• decomposition

_____ is the removal of large chunks of rock debris.

• Plucking
• Abrasion
• Weathering
• Erosion

Which letter represents the shape of valleys created by glaciers?

• V

• U

• W

• L

Abrasion is:

• parallel and straight scratches cut into bedrock by a glacier.

• a process of erosion which occurs when material being transported wears away at a surface over time.

• the transportation of large rocks and boulders

• a ridge at the edge of a glacier where rocks and sediment are deposited

Glaciers are found:

• in locations where snowfall exceeds snowmelt

• everywhere on earth

• only near the north and south poles

• in locations where snowmelt is greater than snowfall

Where is Earth's largest glacier?

• Alaska

• Iceland

• Greenland

• Antarctica

Why do glaciers move?

• due to their immense weight

• gravity

• their weight AND gravity

• They DON'T move!

Which statement about glaciers is NOT true?

• Glaciers move so slowly that their movement cannot be noticed by humans.

• Glaciers change the surface of the land

• Glaciers transport sediment.

• Glaciers are found on every continent.

Which types of locations are NOT likely to form glaciers?

• places near the north and south poles

• places with high elevation and low temperature

• places with low elevation high temperature

• places where the temperature remains cold all year round