Yr 7 Science: Topic 3 - Quiz 1

Everything in the universe is in _________________.

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How do we know the tennis ball in the photo above has a force acting on it?

• It changes shape

• It changes direction

• The racket's strings bend

• All of the above

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In the trick above, the cardboard is flicked off the top of the cup, and the coin drops into it. What force causes this result?

• Magnetism

• Friction

• Gravity

• Buoyancy

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Newton’s First Law states: things at rest stay at rest, and things in motion stay in motion, unless acted on by an _________ force.

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In the formula F=ma, 'F' means 'force', 'm' means 'mass' and 'a' means ________________.

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Newton's Third Law states: for every action there is an equal and opposite ______________________.

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Which of the following are non-contact forces?

• Gravity

• Friction

• Magnetism

• Buoyancy

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Static electricity is a non-contact force.

• True

• False

• It depends on the situation.

• It's not a type of force.

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Forces usually work in opposites to each other - in this example, gravity is pulling the canoe down, but ________________ is keeping them afloat.

What force is responsible for turning the wheels on the bicycle?

• Gravity

• Friction

• Static electricity

• Magnetism

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