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5
×
In a hand-crank system, what part does your hand physically rotate?
Battery
Crank handle
Generator
Switch
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5
×
What do we call a group of interacting components that function as one?
Machine
Instrument
System
Apparatus
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5
×
A 5 kg rock is raised 2 meters and then dropped. What happens to its energy as it falls?
The rock loses all energy upon falling
Its potential energy turns into kinetic energy while falling
All its potential energy disappears instantly
The rock’s kinetic energy changes into potential energy
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5
×
When comparing two surfaces, what factor increases friction between them?
Lighter object
Smoother surface
Smaller contact area
Rougher surface
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banana
Go to last place!
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gold
Win 50 points!
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×
shark
Other team loses 25 points!
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×
banana
Go to last place!
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5
×
What best defines potential energy?
Energy caused by motion
Energy passed from one object to another through work
Energy an object stores because of its position or condition
Energy that cannot change into another form
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lifesaver
Give 15 points!
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star
Double points!
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gift
Win 15 points!
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baam
Lose 5 points!
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5
×
In a battery system, which component stores electrical energy?
Battery
Wires
Light bulb
Mini fan
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5
×
Which statement best explains how friction affects motion?
Friction resists motion between touching surfaces
Friction helps objects move faster
Friction has no impact on motion
Friction increases the speed of moving objects
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heart
Other team wins 5 points!
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star
Double points!
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×
shark
Other team loses 20 points!
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baam
Lose 10 points!
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trap
No points!
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rocket
Go to first place!
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×
shark
Other team loses 25 points!
Okay!
×
banana
Go to last place!
Oops!
5
×
What term refers to energy moving from one object or system to another?
Conduction
Conversion
Transfer
Transformation
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5
×
Choose which image does not demonstrate evidence of energy.
A person turning a hand-crank generator
Light shining from a flashlight
A flying soccer ball
A charged battery
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5
×
Between potential and kinetic energy, which is more useful for making objects move, and why?
Both are equally important for motion
Kinetic energy, since it involves movement
Potential energy, since it is stored for later use
Neither contributes to the motion of objects
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5
×
Look at the sorting activity in the diagram. Identify the error in energy classification.
Two skateboards:one moving and one at the ramp’s top
Fan spinning
Gasoline
Person using a hand-crank generator
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5
×
In physics, what is meant by the term force?
The amount of matter in an object
The rate at which motion changes
The stored energy in an object
A push or pull that causes acceleration
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