Glaciers: Earth's Icy Giants and Their Cool Secrets

A persistent body of natural ice that moves under its own weight.

Glacier ice is classified as a metamorphic rock formed from compressed snow.

No, but they flow and change shape like slow rivers of ice.

When snow accumulation exceeds melting over many years or centuries.

Snow compresses over time into dense ice through a process called firnification.

Glaciers originate only on land, not on water surfaces.

They flow and deform under stresses induced by gravity.

Crevasses are deep cracks that form in glaciers as they move.

They can form ice shelves and ice tongues that float on water.

A cirque is a bowl-shaped valley formed by glacial erosion.

A moraine is an accumulation of glacial debris deposited at the edge of a glacier.

A fjord is a deep, narrow inlet formed by glacial activity.

Valley glaciers are also called alpine glaciers.

Continental glaciers are large ice sheets that cover vast land areas.

A tidewater glacier flows into the sea, creating icebergs.

Pakistan contains more glaciers than any other country outside the polar regions.

The Baltoro Glacier is 62 kilometers long, making it the 5th longest alpine glacier.

Glaciers originate on land and are much thicker than sea ice which forms on water surfaces.

Sea ice is much thinner than glacier ice, typically only a few meters thick.

Glaciers reflect sunlight back into space, helping to cool the planet.

Warmer temperatures cause glaciers to melt faster than they accumulate new snow.

Human-caused climate change is the biggest threat to glaciers worldwide.

Rapid melting can cause dangerous flooding and water shortages downstream.

Sierra Leone's tropical location means it has no natural glaciers.

But understanding glaciers helps us understand Earth's climate systems and water cycles that affect our country.

The nearest glaciers to Freetown are over 8,000 km away in the Himalayas.

That's like traveling from Freetown to London and back three times!

Baltoro Glacier (62 km) is about 3 times longer than Sierra Leone's 400 km coastline.

False! Glaciers form from compacted snow on land, not frozen seawater.

This is a common confusion because both are ice.

People often confuse glaciers with icebergs, but icebergs break off from glaciers.

Moraines, fjords, or cirques are common glacial landforms visible in photos.

Glaciers are Earth's largest freshwater reservoirs and their melting affects global sea levels.

Understanding glaciers helps us understand climate change impacts worldwide.