CST Science

Practice Science Test Chapter 4 Section 4

Mass wasting and glacier

Mass wasting and glaciers

Mass wasting is the downhill movement of a large mass of rocks or soil because of the pull of gravity.Two important parts about mass wasting is

. A large amount of material moves together as a mass

. Gravity is the main cause of the movement

Glaciers are large mass of ice that formed on land and moves slowly across Earth's surface. Glaciers forms on land in areas where the amount of snowfall is greater than the amount of snowmelt.

Multiple Choice

What is Mass wasting

• the rapid downhill movement of soil loose rocks and boulders

• a mixture of various sizes of sediment deposited by a glacier

• the downhill movement of a large mass off rock or soil because of the pull of gravity

• a large mass of ice that formed on land and moves slowly across Earth's surface

• None

Multiple Choice

What are glaciers

• a large mass of ice that formed on land and moves slowly across Earth's surface

• the rapid downhill movement of soil loose rocks and boulders

• the downhill movement of a large mass of rocks or soil because of the pull of gravity

• a pile of angular rocks and sediment from a rockfall

• None

Erosion by Mass Wasting

A landslide is the rapid downhill movement of soil loose rocks and boulders.

A landslide can be either a rockfall or a mudslide. A rockfall is an event in which rocks are pulled to the bottom of a slope by gravity. A mudslide can be caused by heavy rains loosening the sediment on a slope causing mud to flow downhill.

Slump is a type of mass wasting that takes place when material moves slowly in a large mass

Creep may cause trees and other object to lean over.

The amount of erosion that occurs during mass wasting depends on the following factors:

. the type of rocks involved

. the amount of water in the soil

. how steep the slope is

Multiple Choice

What is a landslide

• a large mass of ice that formed on land and moves slowly across Earth's surface

• the rapid downhill movement of soil loose rocks and boulder

• None

Erosion my alpine glaciers

Two main type of glaciers are alpine glacier and ice sheet. Alpine glaciers forms on mountains and flows downhill Some features created by alpine are

: Horns are sharp peaks

: U-shaped valleys carves away the land leaving behind distinctive

: Arete are sharp ridge of rocks formed between glaciers

: Cirque are semicircular hollows that formed by glacial erosion

: Hanging valley forms when a smaller glacier at a higher elevation apporach a large valley carved by a much bigger glcier.

Multiple Choice

Where do alpine glaciers forms

• mountains

• valley

• grass

• ice

Some types of glacial deposition

Till a mixture of various sizes of sediment deposited by a glacier

Moraine a mound or ridge of unsorted sediment deposited by a glacier

Outwashed layered sediment deposited by streams of water that flows from a melting glacier.

Multiple Choice

What is Till

• a pile of angular rocks and sediment from a rockfall

• the rapid downhill movement of soil loose rocks and boulders

• layered sediment deposited by streams of water that flows from a melting glacier

• a mixture of various sizes of sediment deposited by a glacier

• None

Multiple Choice

what is Moraine

• layered sediment deposited by streams of water that flows from a melting glacier

• a mixture of various sizes of sediment deposited by a glacier

• a mound or ridge of unsorted sediment deposited by a glacier

• the downhill mvement of a large mass of rock or soil because of the pull of gravity

• None

Multiple Choice

What is outwashed

• a mixture of various sizes of sediment deposited by a glacier

• a mound or ridge of unsorted sediment deposited by a glacier

• layered sediment deposited by streams of water that flows from a melting glacier

• a pile of angular rocks and sediment from a rockfall

• None