Gargantuan Glaciers
Wild Wind Whistles When Weathering Occurs
Mass Movements Make a Mess!
Caution!
Land is Unstable and May Fall At Any Time
After Glacierzilla Attacks...
100

Glaciers that cover broad areas of land, stretching over 100s of miles are called...?

Continental glaciers!

100

What type of dune forms transverse dunes when there is lots of sand?

Barchan dunes

100

Which of the following has the slowest movement: creep, mudflow, or avalanche?

Creep!

100
Which is the underlying force that causes all forms of mass movement?
Gravity is the underlying force that causes all mass movement.
100

Glaciers deposit unsorted ridges ridges of till called...?

Moraines

200
What type of valley is formed by a glacier?
A U-shaped valley!
200

What is abrasion?

Abrasion is the process of erosion that occurs when particles such as sand rub against the surface of rocks or other materials.

200

The type of mass movement in which a thin sheet or block of soil/rock falls

Slide (or more specifically a landslide)
200
Swiftly moving mixtures of mud and water are called...?
Swiftly moving mixtures of mud and water are called mudflows.
200

The sorted ridges of sediment left behind by meltwater streams beneath glaciers

Eskers

300

Parallel grooves in bedrock are a sign of what?

A glacier with embedded rocks

300

Where are large deposits of loess primarily found?

Large deposits of glacial loess are primarily found in the Midwestern United States.

300
When the mass of a material in a landslide moves along a curved surface, what results?
A slump results.
300
True or False? Having vegetation and trees can increase the risk of a mass movement.
False! Having vegetation and trees can REDUCE the risk of a mass movement.
300
What are the elongated landforms made of older moraines over which glaciers have moved?
Drumlins!
400

Glaciers covered 30% of Earth during the last ice age, which began...

About 2.6 million years ago!

400

When the soil level is lowered by wind erosion

Deflation

400
What is an indication that creep has occurred?

Objects that were once vertical, such as trees and lampposts, are now at an angle.

400

Distinguish between a rockfall and a landslide

A rockfall consists of distinct rocks falling off the top of a slope. A landslide occurs when a sheet of rock or soil breaks free and slides down a slope, only breaking apart afterwards.

400

What is the ridge between two cirques called?

An arete

500

What is a deep, round depression, scooped out by a valley glacier?

A cirque!

500

What are rocks shaped by wind abrasion called?

Ventifacts

500

Explain why slumps and other mass movements are common after heavy rainfall

Water reduces the amount of friction between soil particles

500

What is the BEST way for humans to avoid danger from mass movements?

Avoiding building on or below slopes!

500

Sometimes, a large block of ice breaks off a continental glacier and the surrounding area is covered by sediments. When the block melts, it leaves behind a depression called ____________.

A kettle or kettle lake

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