Monday, 2 May 2011

Following last week's glacial/periglacial ELI

On our current glacial/periglacial theme, have you tried 'Grinding and gouging: how moving ice can grind away rocks'? After trying this activity, pupils will be able to
• explain that ice alone will not scratch rock;
• demonstrate that ice carrying sediment will scratch rock;
• realise that ice will scrape any soil and weathered, loose material from the surface of the underlying rock;
• work out the possible direction of ice movement;
• show that other evidence is needed to determine the actual direction of ice movement;
• explain how a valley glacier could erode a deep, U- shaped valley, given enough time.
This is one of many Earth-related teaching ideas in the Earth energy category on our website.

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