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Simple Machines
Test Description: Simple Machines and associated terms.
Instructions: Answer all questions to get your test result.
1) a device without moving parts that changes the size or direction of a force
A
Newton
B
Fulcrum
C
Simple machine
D
Compound machine
2) A device that combines two or more simple devices.
A
Output force
B
Compound Machine
C
Simple Machine
D
Projectile
3) Which of the following is a simple machine?
A
bicycle
B
can opener
C
car
D
baseball bat
4) The ratio of output force to input force.
A
Work Output
B
Power Ratio
C
Mechanical Advantage
D
Efficiency
5) The percentage of the input work that is converted to output work. The higher the better.
A
Mechanical Advantage
B
Work
C
Power
D
Efficiency
6) The fixed point around which a lever pivots.
A
Gear
B
Fulcrum
C
Cylinder
D
Axle
7) Power is ....
A
using a force to move an object a distance.
B
the rate at which work is done.
C
the ratio of output force to input force.
D
the ability to do work or cause change.
8) The unit of work.
A
Watt
B
Joule
C
Volt
D
Newton
9) Which of the following is a requirement for work to be done?
A
Force moves an object.
B
Machine is used
C
Object is carried.
D
Force is exerted.
10) Which of the following is a form of an inclined plane?
A
lever
B
pulley
C
screw
D
wheel and axle
*select an answer for all questions
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