Glaciers - Moving Ice Masses

The video explores glaciers, massive rivers of ice found globally, including on Mount Kilimanjaro and Antarctica. It explains how glaciers form when ice and snow accumulate faster than they melt, moving slowly downhill. The video details processes like freeze-thaw weathering, plucking, and abrasion, which reshape landscapes. It also discusses how climate change causes glaciers to advance and retreat, transforming the Earth's surface over time.

Where can glaciers be found on Earth?

• On all continents, including Africa

• Only in the polar regions

• Only in Antarctica

• Only in mountainous regions

What percentage of the world's fresh water is stored in glaciers?

• Less than 10%

• Exactly 50%

• About 25%

• Over 75%

How do glaciers form?

• When ice and snow build up faster than they melt

• When ice forms only in polar regions

• When snow melts and refreezes

• When ice and snow melt faster than they accumulate

What is the process called when water freezes in cracks and widens them?

• Plucking

• Freeze-thaw weathering

• Abrasion

• Erosion

What happens during the process of plucking?

• Ice melts and refreezes

• Ice freezes to rock surfaces and pulls chunks away

• Water erodes the rock surface

• Rocks are smoothed by wind