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Olympiad (Class 5) Force and energy — practice questions

Explore 66 free Force and energy questions in Olympiad (Class 5) Science. Open each question or exercise to read its content, reference answers and available explanation.

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Force and energy questions and exercises with answers

Showing questions 1–30 of 66.

Which action is an example of a pull?Read the answer and worked solution →Pressing a lump of clay between your palms shows that a force can change which property of an object?Read the answer and worked solution →In which unit is force measured in the SI system?Read the answer and worked solution →A goalkeeper catches a fast-moving ball and holds it still. What has the force from her hands changed?Read the answer and worked solution →A hockey player hits a rolling ball back the way it came. The force from the stick has changed the ball'sRead the answer and worked solution →To describe a force completely, which two things must we state?Read the answer and worked solution →Which of these forces can act on an object without touching it?Read the answer and worked solution →A ripe mango drops from a branch to the ground. Which force pulled it down?Read the answer and worked solution →A heavy stone and a light pebble fall together, ignoring air. What happens?Read the answer and worked solution →A book rests on a desk and does not fall to the floor. Why?Read the answer and worked solution →A stretched spring tries to go back to its natural length. This pulling-back force is calledRead the answer and worked solution →A spring pushes outward when it is ______ and pulls inward when it is ______.Read the answer and worked solution →Which instrument is commonly used to measure a force such as the weight of a bag?Read the answer and worked solution →Two children pull a rope equally in opposite ways and it stays still. The net force isRead the answer and worked solution →Two people push a box the same way, one with 30 N and one with 20 N. What is the total force on the box?Read the answer and worked solution →One child pushes a cart right with 30 N while another pushes it left with 20 N. What is the net force?Read the answer and worked solution →Team A pulls a rope with 500 N and team B with 450 N. What happens?Read the answer and worked solution →A bus brakes hard and a passenger lurches forward. Why?Read the answer and worked solution →A football lies still until kicked. This shows that an object at rest tends toRead the answer and worked solution →Friction is best described as a force thatRead the answer and worked solution →A box slides to the right across a floor. In which direction does the friction on the box act?Read the answer and worked solution →You push a heavy cupboard but it does not move. The friction acting on it is calledRead the answer and worked solution →A sled slides over snow. The friction between the sled and the snow isRead the answer and worked solution →Rubbing your palms together quickly makes them warm because friction changes some movement energy intoRead the answer and worked solution →Early people lit fires by rubbing pieces of wood together. Which force produced the heat?Read the answer and worked solution →Why do people put a few drops of oil on a squeaky door hinge?Read the answer and worked solution →Which of these can be used as a lubricant to cut friction between machine parts?Read the answer and worked solution →Why is a heavy suitcase easier to move on wheels than to drag?Read the answer and worked solution →Ball bearings inside a cycle wheel hub help because they change sliding friction intoRead the answer and worked solution →Which surface would give the MOST friction to a wooden block sliding over it?Read the answer and worked solution →

Worked practice questions

Which action is an example of a pull?

  1. Drawing a bucket up from a well with a rope
  2. Kicking a football across the ground
  3. Pressing a doorbell button with a finger
  4. Pushing a trolley along a corridor
Show answer and solution

Correct answer: A. Drawing a bucket up from a well with a rope

Drawing a rope toward yourself drags the bucket toward you, so the force is a pull, while the other actions push.

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Pressing a lump of clay between your palms shows that a force can change which property of an object?

  1. Its colour
  2. Its shape
  3. Its material
  4. Its smell
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Correct answer: B. Its shape

Squeezing makes the clay flatten or bend, so the force has changed its shape and nothing else.

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In which unit is force measured in the SI system?

  1. Joule
  2. Watt
  3. Newton
  4. Metre
Show answer and solution

Correct answer: C. Newton

Force is measured in newtons, written N, while joules measure energy and watts measure power.

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