Glaciers

_____ is rock debris embedded in base of ice create polishing, grooves and striations.

• Plucking
• Abrasion
• Weathering
• Erosion

_____ is the removal of large chunks of rock debris.

• Plucking
• Abrasion
• Weathering
• Erosion

A _____ is a glacially carved valley flooded by the sea.

• volcano
• moraine
• out-wash bason
• fjiord

_____ is the unsorted material that is deposited directly by ice.

• Outwash
• Till
• Erratic
• Esker

_____ are are lines deposited at bottom or along sides of glaciers.

• Eskers
• Till
• Erratics
• Moraines

_____ are enormous boulders transported and deposited by glaciers, often far from their source region.

• Till
• Erratics
• Moraines
• Fjords

A _____ is a meandering narrow ridge formed when water, flowing in a tunnel underneath a melting glacier, deposited sediment

• erratic
• moraine
• esker
• fjords

A _____ is a tear-drop-shaped hill created by ice flow over and around till deposit.

• drumlin
• esker
• moraine
• erratic

The photograph shows scratched and grooved

bedrock with boulders on its surface. The scratches and grooves were most likely created when

• alternating thawing and freezing of water cracked the bedrock

• flooding from a nearby lake covered the bedrock

• a glacier dragged rocks over the bedrock

• rocks from a landslide slid along the bedrock

Base your answer to the following question on the diagram which represents a profile of a mountain glacier in the northern United States. Over a period of years, this glacier gains more snow mass than it loses. What will be the most likely result of this gain?

• The glacier will decrease in size, and the ice front will retreat.

• The glacier will decrease in size, and the ice front will advance.

• The glacier will increase in size, and the ice front will retreat.

• The glacier will increase in size, and the ice front will advance.