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Team 2
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15
×
If there are unbalanced forces on an object:
A stationary object will start to move
A stationary object stays stationary
A moving object continues to move at the same speed
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15
×
A boat floats because its weight and the upthrust from water are balanced.
True
False
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heart
Other team wins 25 points!
Oops!
×
seesaw
Swap points!
Okay!
×
rocket
Go to first place!
Okay!
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baam
Lose 20 points!
Oops!
15
×
The unit for measuring force is the newton (N).
True
False
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15
×
Friction is a contact force. Friction can
Make objects move faster
Slow objects down
Cool objects down
Cause arguments
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15
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Balanced forcesare forces on an object that are the same size but work in opposite directions. If forces are balanced:
A stationary object stays stationary
Astationary object will start to move
A moving object will change its speed or direction.
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15
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Contact forcesonly act when two objects or materials are touching. An example of a contact force is:
Static electric force.
Weight (gravity force)
Magnetic force
Friction
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15
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Forces are pushes or pulls. Forces can:
All of these
â change the direction of a moving object.
â change the speed things are moving (make them move faster or slower)
â change the shape of an object
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15
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The force of friction produced by the air is known as ...?
Air resistance
Resistance is futile
Oxygen friction
Water resistance
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15
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Weight is the size of the force of gravity on an object.The unit of weight is the newton (N)
True
False
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thief
Give points!
5
10
15
20
25
×
gift
Win 15 points!
Okay!
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fairy
Take points!
5
10
15
20
25
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banana
Go to last place!
Oops!
15
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A force can be measured with a force meter.
False
True
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15
×
Gravitational field strength is the size of the gravity on every kilogram of mass.This is different on every planet.
True
False
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×
boom
Lose 50 points!
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star
Double points!
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×
shark
Other team loses 15 points!
Okay!
×
thief
Give points!
5
10
15
20
25
15
×
The gravitational field strength on Earth is 10 N/kg
True
False
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15
×
Non-contact forces can have an effect without objects touching. Which example is NOT a non-contact force?
Magnetic force
Static electric force.
Weight (gravity force)
Air resistance
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