What Are Glaciers? Crash Course Geography

The video explores the role of glaciers in shaping Earth's landscapes and climate. It discusses the types of glaciers, their historical impact, and their influence on global climate and water systems. The video also highlights the movement of glaciers and their effects on landforms, as well as their significance in human history and potential future changes due to climate change.

What natural feature in New York was shaped by glaciers?

• The Catskill Mountains

• The Adirondack Mountains

• The Finger Lakes

• The Hudson River

What percentage of Earth's land surface was covered by ice in 2021?

• 5%

• 20%

• 15%

• 10%

What is the primary reason glaciers reflect solar radiation?

• Their high altitude

• Their white color

• Their large size

• Their thickness

What is the term for a period when ice sheets grow and spread?

• Ice Age

• Glaciation

• Interglaciation

• Thawing

What is the term for the lowest elevation where ice and snow persist year-round?

• Glacier base

• Ice cap

• Snow line

• Frost line

What is a terminal moraine?

• A mountain peak shaped by glaciers

• A deep valley formed by glaciers

• A ridge of debris left by a glacier

• A type of glacier

What are erratics?

• Large ice sheets

• Boulders transported by glaciers

• Deep crevasses in glaciers

• Sharp mountain ridges

What is a cirque?

• A valley deepened by glaciers

• A sharp ridge formed by glaciers

• A hollow formed by glacial erosion

• A peak formed by multiple glaciers

What is the potential impact of the Thwaites Glacier breaking?

• Increase in polar ice

• Decrease in global temperatures

• Rise in global sea levels

• Formation of new glaciers

What is a medial moraine?

• A ridge formed at the side of a glacier

• A peak formed by multiple glaciers

• A ridge formed where two glaciers meet

• A hollow formed by glacial erosion