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Forces 03
Gravity, air resistance and friction are the forces acting on a child going down a slide. (Photo courtesy of Pondspider at Flickr.)

Forces 03

One type of force is magnetism. You've learned about all the different forces which act on objects. Friction, gravity, magnetism, air resistance and water resistance are all different types of pushes and pulls. Now see if you can recognise which forces are in action in different situations.

Challenge yourself with this third science quiz about forces.

  1. What type of force is water resistance?
    3 -
  2. What type of force is air resistance?
    2 - Air resistance and water resistance are both types of friction - air resistance is the friction an object experiences when moving through air and water resistance is the friction an object experiences when moving through water
  3. A toy plastic boat floating in a bucket of water is experiencing which forces?
    1 - Upthrust is the force that prevents the boat from sinking. All objects on Earth experience gravity all of the time
  4. A row boat being rowed across a lake is experiencing which forces?
    4 - The push comes from the rowing of the oars pushing the boat forwards through the water
  5. Imagine someone cycling up a steep hill. Which forces are being experienced by the cyclist's shoes?
    2 - Gravity is always being exerted on objects, air resistance results from moving through the air, and friction results from the shoe's 'grip' on the pedals. The cyclist pushes down on the pedals (through the shoes) and pulls up after each push
  6. Imagine the same cyclist in question five. Which forces do the tyres experience?
    4 - Although it can be hard to imagine, the road is exerting upthrust on the bike's tyres - this is the force that prevents the bike from sinking through the road!
  7. What forces are acting on a parachute as it falls through the air?
    3 -
  8. Which forces are acting on a child who is going down a slide?
    1 -
  9. If the child in question eight stayed at the top of the slide, forces would be balanced. What force is needed to start the child sliding?
    2 -
  10. Catapults are designed to provide a 'push' which will be stronger than the force of gravity - the object which is being catapulted should be aerodynamic to minimise which force?
    1 -

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