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