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5
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Object A moves at a steady speed, and Object B speeds up in a straight line. Which one accelerates and why?
Object B, because its speed is changing
Neither, because both travel straight
Both objects, since they are moving
Object A, because it moves constantly
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5
×
A 5 kg rock is raised 2 meters and then dropped. What happens to its energy as it falls?
Its potential energy turns into kinetic energy while falling
The rock’s kinetic energy changes into potential energy
All its potential energy disappears instantly
The rock loses all energy upon falling
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5
×
What is the correct sequence for the system to make the light bulb glow?
III – IV – I – II
III – IV – II – I
IV – III – II – I
I – II – III – IV
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×
baam
Lose 25 points!
Oops!
×
star
Double points!
Okay!
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rocket
Go to first place!
Okay!
×
lifesaver
Give 15 points!
Oops!
5
×
In a hand-crank system, what part does your hand physically rotate?
Generator
Battery
Crank handle
Switch
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trap
No points!
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fairy
Take points!
5
10
15
20
25
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fairy
Take points!
5
10
15
20
25
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banana
Go to last place!
Oops!
5
×
What defines velocity accurately?
Distance per unit of time
Rate at which speed changes
Speed in a specific direction
Change in position of an object
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5
×
Which describes kinetic energy correctly?
Energy moved from one object to another
Energy of an object because it is moving
Energy resulting from sound waves
Energy stored due to an object’s height
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5
×
Which part is not essential for a working battery system?
Battery
Electric wires
Ammeter
Light
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5
×
In physics, what is meant by the term force?
The stored energy in an object
The rate at which motion changes
A push or pull that causes acceleration
The amount of matter in an object
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5
×
In a battery system, which component stores electrical energy?
Light bulb
Wires
Battery
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 increases the speed of moving objects
Friction has no impact on motion
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thief
Give points!
5
10
15
20
25
×
rocket
Go to first place!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
baam
Lose 10 points!
Oops!
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thief
Give points!
5
10
15
20
25
×
gold
Win 50 points!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
banana
Go to last place!
Oops!
5
×
Which device changes kinetic energy into electrical energy?
Generator
Battery
Solar panel
Motor
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5
×
Choose which image does not demonstrate evidence of energy.
A charged battery
Light shining from a flashlight
A person turning a hand-crank generator
A flying soccer ball
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