Ice Erosion Review

How does a glacier start to move?

• It starts to melt at the bottom and slides over the thin layer of water

• It doesn’t move

• It melts from the top and slides

A ___________ is found in high mountain valleys and makes a u-shaped valley.

A _________________ covers large areas.

How much of Ohio was covered by a continental glacier during the las ice age?

• None of it

• 2/3

• 1/2

Glaciers cause erosion through

• Abrasion

• Water seeping into rock cracks and refreezing which causes rocks to break

• No erosion is causes

Tags

NGSS.MS-ESS2-2

What is a kettle?

• A circular lake in which ice breaks off and melts underground d

• A long narrow lake made when glacial moraine blocks a river

Tags

NGSS.MS-ESS2-2

What is a drumlin?

• A large rock that looks misplaced

• long smooth hills of glacial till which points in thE direction of the glacier movement.

Tags

NGSS.MS-ESS2-2

What is a moraine dammed lake?

• A long narrow lake that resulted from a glacial moraine blocking a river valley

• A circular lake in which ice breaks off and melts underground

Tags

NGSS.MS-ESS2-2

What is an erratic?

• Long smooth hills of glacial till which points in the direction of glacier movement

• A large rock that looks misplaced

True or False: Moraines are furthest point of the glacier

• True

• False