Class Clips is changing
We will be introducing the new Knowledge and Learning Beta website over the coming months. Clips for use in the classroom are now available on your phone, tablet or PC.


Alternatively, you can still browse or search by keyword or clip number on this site.

Clip description Keywords
Desert erosion
Desert erosion

Duration: 01:49

Deserts are eroded by rainwater run-off and the wind. Desert soil is far from useless; it is rich in nitrogen and mineral compounds.
desert, erosion, soil, wind, plants, roots, fragile, nitrogen, mineral, humus, sub-soil, bedrock
 
Meet the Catlin Arctic Survey team members
Meet the Catlin Arctic Survey team members

Duration: 02:34

A team of polar explorers has travelled to the Arctic in a bid to discover how quickly the sea ice is melting and how long it could be before the Arctic summer becomes ice-free.
Arctic, ocean, cold, North Pole, polar, exploration, ice, global warming, climate change, extreme weather
 
The freezing winters of Northern Canada
The freezing winters of Northern Canada

Duration: 06:12

Kate Humble visits ice road truckers in Canada to see how lakes get icy enough to drive on well after mid Winter.
Atmosphere, clouds, air, weather, climate, temperature, sea, sun, energy, seasonal, season, effect, lake, tilt, ice, road, truckers, trucker, northern hemisphere, radiation balance, winter solstice, solar energy, OrbitEarthsExtraordinaryJourney
 

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