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15
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What is a 'field' in science?
The region around an object where its force can be felt by other objects
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15
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What is the difference between mass and weight?
Mass is the amount of matter in an object (kg); weight is the gravitational force pulling on that mass (N)
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15
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Name the THREE indirect (non-contact) forces studied in Stage 4 science.
Gravity, magnetism, and electrostatic force
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Name TWO examples of direct (contact) forces.
Any two of: friction, tension, normal force, compression, applied push or pull
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15
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Two balloons are both rubbed with the same wool cloth. What happens when they are brought close together?
They repel â both carry the same type of charge
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seesaw
Swap points!
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seesaw
Swap points!
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shark
Other team loses 10 points!
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banana
Go to last place!
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15
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State the rule for magnetic poles in one sentence.
Like poles repel; unlike poles attract
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heart
Other team wins 25 points!
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magnet
Take 20 points!
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gift
Win 25 points!
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thief
Give points!
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15
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Ignoring air resistance, which falls faster: a golf ball or a bowling ball dropped from the same height?
Neither â they fall at the same rate (all objects fall at the same rate under gravity)
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15
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A student has a mass of 50 kg. What is their mass on the Moon?
50 kg â mass does not change with location
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When a ball rolls across a carpet and slows down, which direct force is acting on it?
Friction
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15
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Is gravity a direct or indirect force? Explain why.
Indirect â gravity can pull objects toward each other without them touching
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lifesaver
Give 10 points!
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gift
Win 25 points!
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rocket
Go to first place!
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lifesaver
Give 10 points!
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15
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What do we call a force that can push or pull an object WITHOUT touching it?
An indirect (non-contact) force
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thief
Give points!
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25
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star
Double points!
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gift
Win 20 points!
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baam
Lose 25 points!
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15
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What happens when two north poles of magnets are brought close together?
They repel (push apart)
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