Year 7 Revision Pt 2.

As the distance between a magnet and a piece of iron increases, the force of attraction between them:

• increases.

• decreases.

• remains unchanged.

• increases or decreases depending on the strength of the magnet.

The following diagram refers to a person skydiving from a plane. The force of gravity is acting on the skydiver. What other force is also acting on the skydiver?

• air resistance

• elastic

• friction

• magnetic

Unbalanced forces cause:

• No change in motion because they are in equilibrium

• Moving objects to keep moving in the same direction and speed

• An object that is moving to change its direction and/or speed

• All of the above

The force that always acts opposite to the direction of the motion of an object is called

• Inertia

• Reaction

• Lift

• Friction

Forces are not things we can see. But we can often tell when a force is acting.

            We know a force must be acting if we observe a:

• change in the shape of an object.

• change in the colour of an object.

• change in the temperature of an object.

• new substance being formed.

Force is usually measured in:

• Tonnes

• Joules

• Litres

• Newtons

Which of the following forces would act at a distance (or non-contact) from an object?

• Friction

• Magnetism

• Air pressure

• Elastic force

What type of force occurs when a human, animal or machine pushes, pulls or twists an object?

• Tension

• Applied force

• Magnetism

• Gravity

The weight of an object is the:

• amount of matter it contains.

• space it takes up.

• force created by gravity pulling it towards the Earth.

• resistance of the object to being moved. 

Which of the following pictures shows balanced forces?

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