___________
Science
Forces including simple machines

Starter quiz

  • <span class="blank">______</span> is the force which acts between a moving sledge and the snow, in the opposite direction to the movement.
    ______ is the force which acts between a moving sledge and the snow, in the opposite direction to the movement.
    • 'Friction' ✓
  • Long thin shapes have less air ______ because there is less area for air to bump into.
    • 'resistance' ✓
  • What is the surface area of an object?
    • The area of its smallest surface.
    • The total area taken up by all of its surfaces added together.  ✓
  • Match the object shape to the relative size of its surface area:
    • long and wide
      ⇔
      large surface area ✓
    • long and thin
      ⇔
      small surface area ✓
  • These shapes are all made with the same mass of sticky tack. Which one of them has the greatest surface area?
    • a
      a
    • b
      b
    • c
      c  ✓
  • If you want to fall through the air as slowly as possible you should __________ your surface area.
    If you want to fall through the air as slowly as possible you should __________ your surface area.
    • maximise  ✓
    • minimise
+