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Primary Focus Science Clips

  1. The forces involved in some magic tricks

    Duration: 01:45

  2. Levers, compression and pneumatic force

    Duration: 02:33

  3. What is air resistance?

    Duration: 02:52

  4. How does friction work as a force?

    Duration: 02:30

  5. Why do Brent Geese come to Strangford Lough in Northern Ireland?

    Duration: 02:54

  6. How does friction affect speed?

    Duration: 01:37

  7. Science challenge - testing knowledge of forces

    Duration: 03:56