OCR GCSE Geography B · J384
Specification 2.1a, 4.3a · Paper 1, Paper 3
Revise: Evidence for Climate ChangeSatellite observations allow scientists to map the edge of sea ice and measure the area it covers. For the Arctic, sea ice usually reaches its greatest extent around March, after winter freezing, and its smallest extent around September, after summer melting.
- Revise: Polar Region Characteristics
Ice formed by the freezing of seawater, which floats on the ocean.