Revision Quiz 14
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  1. An apple has a weight of about 1N. What does 'N' stand for? (lesson 14a)
  2. If two forces are balanced, they must be ----- and --------. (14a)
  3. A girl is pushing a box with a force of 80N. There is a friction force of 60N. What is the resultant force? (14a)
  4. If the forces on an object are balanced it either stay ----- or if moving it will carry on moving at a steady ----- in a -------- line. (14a)
  5. What is the name of the force that balances a floating object? (14a)
  6. What simple shape helps to make a structure firm and rigid? (14a)
  7. Some parts of a bridge are being squashed together. This is called -----------. (14b)
  8. Some parts of a bridge are being stretched, they in -------. (14b)
  9. The larger the weight on the centre of a bridge the more it will ----. (14c)
  10. The larger the force pulling on a spring the more it ---------. (14c)
  11. Average ----- = distance travelled/time taken. (14d)
  12. A horse is galloping at 10m/s. What does m/s stand for? (14d)
  13. If a horse speeds up it is ------------. If it slows down it ------------. (14d)
  14. A boy runs 100m in twenty seconds. What is his average speed?
  15. An aeroplane travels 2000km in 2 hours. What is its average speed? (14d)

ANSWERS

  1. Newton.
  2. Equal and opposite.
  3. 20N
  4. Still, speed, straight.
  5. Upthrust.
  6. Triangle.
  7. Compression.
  8. Tension.
  9. Bends.
  10. Stretches.
  11. Speed.
  12. metres per second.
  13. Accelerating, decelerating.
  14. 5m/s.
  15. 1000km/h.