Glacier Dynamics and Features

The video tutorial explains the movement of glaciers, focusing on how they advance and retreat, affecting the landscape. It covers the deposition of sediments, formation of erratics, and creation of moraines. The process of glacier melting and its impact on bedrock, including the formation of outwash plains, is also discussed. The tutorial concludes with observations on glacier behavior and its geological effects.

What is the term for unsorted material left by a glacier?

• Outwash

• Erratic

• Moraines

• Till

What is an erratic in the context of glaciers?

• A type of sediment

• A large boulder

• A glacier movement

• A type of moraine

What is a recessional moraine?

• A glacier advance feature

• A type of erratic

• A glacier retreat feature

• A type of sediment

What happens to a glacier when the temperature increases?

• It deposits till

• It retreats

• It forms a moraine

• It advances

What is an outwash plain?

• A type of moraine

• A glacier advance feature

• A type of erratic

• A flat area formed by glacier meltwater

What effect do glaciers have on bedrock?

• They deposit till

• They create striations

• They form erratics

• They cause melting

What are striations?

• Glacier movements

• Lines on bedrock

• Moraine formations

• Types of sediments

What is the primary cause of glacier melting?

• Decreased sunlight

• Increased wind

• Higher temperatures

• Increased precipitation

What is the significance of observing glacier dynamics over time?

• To understand climate change

• To predict weather patterns

• To measure sea levels

• To track animal migration

What is the main feature left behind by a retreating glacier?

• Till

• Outwash plain

• Recessional moraine

• Erratic