Glaciers
⭐ MasteredGlaciers are huge rivers of ice that move slowly downhill. They carve out valleys and hold much of the world's fresh water.
Most of Earth's fresh water is frozen in glaciers and ice sheets.
All about Glaciers
A glacier is a huge, slow-moving body of ice that forms when snow piles up year after year and is compressed into dense ice. Glaciers flow downhill under their own weight, sometimes only a few metres a day.
As glaciers move, they carve out valleys, push rock into piles called moraines and create lakes. Glaciers store around 70% of the world's fresh water, and when they melt they feed rivers and seas.
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Real-life uses of Glaciers
- Providing fresh water for rivers and communities downstream
- Revealing clues about past climates in ice cores
- Attracting walkers and climbers to icy landscapes
Frequently asked questions about Glaciers
What is the difference between a glacier and an iceberg?
A glacier is a large body of ice on land that moves. An iceberg is a piece of ice that has broken off a glacier or ice shelf and floats in the sea.
Why are glaciers shrinking?
Rising global temperatures make them melt faster than snow can replace them.
What is an ice core?
A long cylinder of ice drilled out of a glacier. Trapped air bubbles show scientists what the atmosphere was like thousands of years ago.