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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
Compound machine
B
Fulcrum
C
Simple machine
D
Newton
2) A device that combines two or more simple devices.
A
Output force
B
Projectile
C
Compound Machine
D
Simple Machine
3) Which of the following is a simple machine?
A
can opener
B
bicycle
C
car
D
baseball bat
4) The ratio of output force to input force.
A
Work Output
B
Efficiency
C
Mechanical Advantage
D
Power Ratio
5) The percentage of the input work that is converted to output work. The higher the better.
A
Mechanical Advantage
B
Power
C
Work
D
Efficiency
6) The fixed point around which a lever pivots.
A
Fulcrum
B
Cylinder
C
Gear
D
Axle
7) Power is ....
A
the rate at which work is done.
B
using a force to move an object a distance.
C
the ability to do work or cause change.
D
the ratio of output force to input force.
8) The unit of work.
A
Newton
B
Joule
C
Watt
D
Volt
9) Which of the following is a requirement for work to be done?
A
Machine is used
B
Force moves an object.
C
Object is carried.
D
Force is exerted.
10) Which of the following is a form of an inclined plane?
A
pulley
B
screw
C
wheel and axle
D
lever
*select an answer for all questions
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