Force and energy

_____ gives us energy to do various activities.

• food

• water

• work

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Force cannot change the speed or direction of an object.

• True

• False

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_____ is said to be done when force moves an object.

• work

• energy

• motion

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What force is pulling the apple down?

• Buoyant force

• Elastic force

• Gravitational force

• Weight

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The upward push of water on a floating object is called ................... .

• Buoyant force

• Density

• Pressure

• Volume

Which type of simple machine is a see-saw in the playground ?

• Lever

• Pulley

• Inclined Plane

• Wedge

Which of these are an effect of force ?

• Force can stop a moving object .

• Force can change the shape of an object.

• Force can move an object .

• All of these .

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Which type of force do you see in the picture?

• Push

• Pull

• Throw

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A stretched rubber band regains it's original position on being released because of .................. .

• gravitational force

• elastic force

• frictional force

• Buoyant force

Bottle opener is an example of .................... .

• An inclined plane

• 1st class lever

• 2nd class lever

• 3rd class lever