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Presenter Kate Humble goes to Yellowknife to experience the freezing cold of a Canadian winter. She’s there to see why it’s still getting colder in January, even though the winter is past its peak. By talking to ice road truckers she finds out that the ice gets thicker in January because Earth continues to lose heat energy faster than it's replaced by the Sun for several weeks after mid Winter.
This clip is from:
Orbit: Earth's Extraordinary Journey - Learning Zone
First broadcast:
3 May 2012

Classroom Ideas

Show the clip up to the point where it is revealed that the temperature gets colder despite the increasing solar radiation. Ask pupils to come up with theories as to why. Show the rest of the clip and ask them if they were correct. Ask them to create a short story for younger children to explain.