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- 1. Multiple Choice
A,B,C
C,D,F
B,E,F
C,E,F
- 2. Multiple Choice
Which is the result of using a more powerful motor to run an elevator?
The same amount of work is done in less time.
Less work is done in the same amount of time.
The same amount of work is needed to move the same distance.
A longer time is needed to move a shorter distance.
- 3. Multiple Choice
Sound waves are unable to travel through -
air
a vacuum
water
a rock
- 4. Multiple Choice
A group of campers travels to a cabin which has no electrical power. In order to provide the power for a heater and lights, which device would be appropriate?
A resistor
An insulator
A generator
A voltmeter
- 5. Multiple Choice
As the frequency of a wave decreases, the wave's -
period decreases
amplitude increases
speed decreases
wavelength increases
- 6. Multiple Choice
A girl kicks a soccer ball into the air. Which of these best explains why the soccer ball falls back to earth.
The acceleration of the ball is unstable.
The motion of the ball is changed by external forces.
The pressure of the ball changes with altitude.
The force exerted on the ball is greater than gravity.
- 7. Multiple Choice
Which of the following is an example of static electricity?
A dry-cell connected to wires lights up a light bulb.
A balloon sticks to a wall after it is rubbed with a piece of wool.
A magnet sticks to a refrigerator door made of metal.
A light switch that is turned on runs a ceiling fan.
- 8. Multiple Choice
A car manufacturer reduces the mass of a car by 250 kg. If the new design is otherwise identical to the old design, how will the new car compare to the old car?
It will have a greater gravitational attraction to the road.
It will require more fuel to operate.
It will need less force to move.
It will release more gas emissions.
- 9. Multiple Choice
On a sunny morning, students standing in front of a store window noticed an image of themselves in the glass. Why did the students see their image in the glass?
Some of the light was reflected off the surface of the glass.
Some of the light passed through the glass window.
Some of the light was absorbed by the glass surface.
Some of the light separated into different colors.
- 10. Multiple Choice
What does weight measure?
The force of gravity acting on an object
The amount of matter in an object
newtons
grams
- 11. Multiple Choice
What does mass measure?
The force of gravity acting on an object
The amount of matter in an object
Newtons
Grams
- 12. Multiple Choice
Blake and Aiden both work at a car wash on the weekends. It takes Blake 20 minutes to wash a car. Aiden can wash the same car only in 10 minutes. Aiden has--
half as much work as Blake
twice the work compared to Blake
twice as much power as Blake
Half the power that Blake has
- 13. Multiple Choice
In science, a push or a pull is called
power
work
force
motion
- 14. Multiple Choice
The ramp on the back of a moving van is an example of what type of simple machine?
Wedge
Pulley
Screw
Inclined plane
- 15. Multiple Choice
A book that is placed on a table overnight is in the same spot on the table the next morning. Which law of motion does this represent?
1
2
3
None
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