I WONDER - How Are Glaciers Formed?

Glaciers are large ice masses formed over centuries from accumulated snow. The snow compresses into ice, creating glaciers that store about 70% of Earth's freshwater, which is vital for human survival.

What are glaciers primarily composed of?

• Water vapor

• Rocks

• Ice

• Sand

How do glaciers form over time?

• By the movement of tectonic plates

• By melting and refreezing

• By the accumulation and compression of snow

• By volcanic activity

What happens to snow at the bottom of a glacier over time?

• It remains unchanged

• It gets compressed into ice

• It turns into water

• It evaporates

What percentage of the world's freshwater is held in glaciers?

• 60%

• 70%

• 50%

• 80%

Why is freshwater from glaciers crucial for life on Earth?

• It is used for industrial purposes

• It is essential for human survival

• It is not important

• It is used for recreational activities