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Science
Hidden forces

Starter quiz

  • Complete the statement. The word used to describe the force on an object due to a gravitational field is ...
    • 'weight' ✓
  • A pupil puts different forces on a spring. Starting with the smallest extension, sort the forces into order of the extension they cause.
    • 1
      ⇔
      1.0 N
    • 2
      ⇔
      1.5 N
    • 3
      ⇔
      2.0 N
    • 4
      ⇔
      2.5 N
    • 5
      ⇔
      3.0 N
    • 6
      ⇔
      6.0 N
  • The figure shows a spring before and after a weight has been added. What is the extension of the spring when the mass is placed on it?
    The figure shows a spring before and after a weight has been added. What is the extension of the spring when the mass is placed on it?
    • 0 cm
    • 4.0 cm
    • 4.5 cm  ✓
    • 10.5 cm
    • 14.5 cm
  • The photograph shows a pupil measuring the extension of a spring. How could the pupil improve the accuracy of the measurement?
    The photograph shows a pupil measuring the extension of a spring. How could the pupil improve the accuracy of the measurement?
    • Use a shorter spring to make the extension shorter.
    • Use a longer ruler to reach the spring.
    • Use a set square to make sure the measurement is horizontal.  ✓
    • Move the ruler further from the spring to keep it balanced.
    • Use a longer spring to make the extension shorter.
  • The gravitational field strength on Earth is 10 N/kg. What size mass will have a weight of 1 N?
    • 10 kg
    • 1 kg
    • 1000 g
    • 100 g  ✓
    • 10 g
  • Why is it important to measure the extension of a spring when masses are taken off as well as being added?
    • This will help loosen the spring and make it stretch better.
    • The masses may have changed after they were added.
    • To help check the accuracy of the measurements.  ✓
    • So that a wider range of masses can be used.
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