3.3 Ice erosion

By: RyanAlex

ScottWhit

Louie

How does ice erosion change the world?

What is the difference between alpine and continental glaciers?

Questions for the class

Alpine glaciers Continental glaciers cover over continents they are huge on stretches across most of Antarctica. That ice sheet is 1 and ½ times bigger the United States.

Continental Glaciers cover over continents they are huge on stretches across most of Antarctica. That ice sheet is 1 and ½ times bigger the United States.

GLACIERS- Rivers of Ice

Glaciers on the move. Thick glaciers move faster then thin glaciers. Also the stepper the slope is the faster the glacier moves.

Glaciers move 2 ways by sliding and flowing. Glaciers move by the weight of the glaciers makes the bottom melt, as the water at the bottom makes the glacier slide down of flow down.

Glacier movement is affected by the climate as well. About 10000 years ago a continental glacier covered most of North America.

Glaciers on the Move

Glaciers can carve many different types of mountains and sometimes shape and flatten the landscape in many different ways.

EXAMPLES:U shaped valleys are made by when glaciers eat

away at v-shaped river to turn it into a u-shaped valley

Hanging Valleys

Types of Glacier Effects

Arêtes

Horns

Cirques

U shaped valleys

Hanging Valleys

Glaciers can carve many different types of mountains and sometimes shape and flatten the landscape in many different ways. Here are some types of ways that glaciers can shape mountains and the landscape.

Landforms Carved by Glaciers

Glacial Drift- Rock material carried and deposited by glaciers.

Till- Unsorted rock material that is deposited directly by a melting glacier.

Stratified Drift- A glacial deposit that has been sorted and layered by the actions of streams and meltwater.

Types of Glacial Deposits

As a glacier starts to melt it loses all the material it is carrying.

Glacial drift is divided into two parts: till and stratified drift.

Till deposits Here unsorted means that the till is made

up of several different sizes. When the glacier gets hot it melts, so when

it melts , the unsorted material is deposited on the surface of the ground.

Till Deposits

The Most frequent till deposits are moraines.

There are many different types of moraines. There created when glaciers carry material

to the front of and along the sides of the ice.

Moraines usually form ridges along the edges of the glaciers

Moraines

Lateral moraines form on side of glacier Ground moraines form from unsorted

materials left beneath a glacier Medial moraines form when valley glaciers

with lateral moraines meet Terminal moraines form when the sediment

is dropped at the front of the glacier.

Types of Moraines

How does ice erosion change the world?

Ice erosion changes the world around us because it shapes the world landforms around us.

What is the difference between alpine and

continental glaciers?

Alpine glaciers form in mountainous areas. Also, they are wider and straighter. Continental glaciers flatten and smooth a patch of land.

wowanswers

By Whit- Types of Moraines/Moraines Louie-Types of Glacial Deposits Scott- Designer/ Landforms Carved by

Glaciers Alex-Designer/ Landforms Carved by

Glaciers Ryan-Glaciers, Rivers of Ice and Glaciers on

the Move

Credits