Any 2: slows moving objects, produces unnecessary heat and noise, damages / wears out surfaces that are in contact.
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10
True or False: Friction allows us to grip objects and to stand up are advantages.
True
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15
What is the type of force when 2 surfaces rub together?
Friction
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15
Name 2 advantages of friction.
Any 2: allows objects to remain still, allows us to grip things and walk, prevents slipping, allows moving objects to stop, produces heat to start a fire.
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10
True or False: Heavier objects require more force to move and stop.
True
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baam
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seesaw
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gift
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thief
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10
What do we call the overall / single force acting on an object?
Resultant Force
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15
Name 2 reasons a big rock is harder to move than a small rock.
Heavier, increased friction, requires more force to move, more of the surface contacting.
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15
What does the arrow in a diagram show? (2 things)
Direction and Magnitude
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lifesaver
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gift
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fairy
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thief
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10
What device is used to measure force?
Spring Balance
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10
What is the force that keeps everything on Earth from flying into the air?
Gravity
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10
True or False: Wet roads allow more friction than dry roads.
False
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10
True or False: Lighter objects require less force to stop than heavier objects.
