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A toy car travels down a ramp covered in sandpaper slowly. What was it about the surface of the ramp that caused the car to move slowly?
Solar panels powering a building
Mechanical
An electromagnet needs electrical energy
A source of energy
Roughness
Dropping an object from different heights
Radio
The carpet produces more friction
Kevin wants to build a circuit. He has copper wire and a light bulb. What does he still need to complete his circuit?
Solar panels powering a building
Mechanical
An electromagnet needs electrical energy
A source of energy
Roughness
Dropping an object from different heights
Radio
The carpet produces more friction
Which of the following experiments would test the effect of gravity on an object?
Solar panels powering a building
Mechanical
An electromagnet needs electrical energy
A source of energy
Roughness
Dropping an object from different heights
Radio
The carpet produces more friction
Which of the following coverts electrical energy into sound energy?
Solar panels powering a building
Mechanical
An electromagnet needs electrical energy
A source of energy
Roughness
Dropping an object from different heights
Radio
The carpet produces more friction
How is an electromagnet different than a regular magnet?
Solar panels powering a building
Mechanical
An electromagnet needs electrical energy
A source of energy
Roughness
Dropping an object from different heights
Radio
The carpet produces more friction
Which of the following is NOT an example of mechanical energy?
Solar panels powering a building
Mechanical
An electromagnet needs electrical energy
A source of energy
Roughness
Dropping an object from different heights
Radio
The carpet produces more friction
Jen rolls a ball down a ramp covered in different surfaces. She observes that the ball rolls slower on the ramp covered with carpet than it does on the ramp covered with plastic. Why is this true?
Solar panels powering a building
Mechanical
An electromagnet needs electrical energy
A source of energy
Roughness
Dropping an object from different heights
Radio
The carpet produces more friction
Lisa turns the doorknob to open the classroom door. What kind of energy is she using?
Solar panels powering a building
Mechanical
An electromagnet needs electrical energy
A source of energy
Roughness
Dropping an object from different heights
Radio
The carpet produces more friction
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