Glaciers

True or False? Glaciers have been shaping our world for millions of years.

• True

• False

A glaciers is

• A small mass of ice that does not move.

• A small mass of ice that moves slowly over land.

• A large mass of ice that does not move.

• A large mass of ice that moves slowly over land.

What type of glacier covers huge areas of land?

• alpine

• continental

• till

• moraine

unsorted rock material (large and small rocks) deposited directly by a glacier as it melts

• glacial drift

• stratified drift

• till

• glacier

What are jagged ridges that form on mountains called?

• U0shaped valleys

• cirques

• aretes

• horns

Glaciers form when _____.

• less snow falls than melts 
• more snow falls than melts 
• less rain falls than freezes 
• more rain falls than freezes 

_____ are parallel scratch marks on bedrock

• Plucking
• Abrasion
• Straitions
• Till

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

• Eskers
• Till
• Erratics
• Moraines

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

Which landscape feature was most likely formed by glacial activity?

• an eroded plateau

• a flat floodplain

• a U-shaped valley

• a V-shaped valley