Earth's Frozen Water
Understand the cryosphere and its role in Earth's water system — the cryosphere is all frozen water on Earth (ice sheets, glaciers, sea ice, permafrost, snow cover); polar ice sheets hold about 69% of Earth's fresh water; if all polar ice melted, sea levels would rise over 65 metres; and the water cycle connects polar ice to the global system through evaporation, precipitation, and meltwater flowing into oceans
Typical age: 9–11 years
“Does your child know that most of Earth's fresh water is actually locked up as ice at the poles — and that if it all melted, the sea would rise over 65 metres, flooding coastal cities worldwide?”
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Needs first
- Glaciers & Ice SheetsREQUIRED
Must understand glaciers and ice sheets before the broader cryosphere concept
- The Water Cycle
Water cycle understanding enriches the cryosphere-water system topic (Weather 7-9 -> Polar 9-11)
- Polar Oceans and World Climate
Ocean connections enrich the water system perspective
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