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Science-Work Simple Machines
Test Description: Work simple machines
Instructions: Answer all questions to get your test result.
1) Which of these is an example of work being done on an object?
A
Pushing a child on a swing.
B
Holding a heavy piece of wood at a construction site.
C
Trying to push a car that doesn’t move out of deep snow.
D
Holding a door shut on a windy day so it doesn’t blow open.
2) _________ is the ability to cause change
A
b. Joules
B
d. Power
C
a. Work
D
c. Energy
3) Work is measured in__________?
A
d. Newtons
B
b. Pounds.
C
c. Joules
D
a. Meters.
4) ________ is a simple machine that consists of a bar that pivots at a fixed point.
A
a. Lever
B
c. Fulcrum
C
b. Pounds.
D
d. Wheel and Axle
5) An ideal machine would have an efficiency of ________.
A
10%
B
2%
C
1 %
D
100%
6) The rate at which work is done (or energy is transformed) is called __________.
A
b. Joules
B
d. Energy
C
a. Power
D
c. Watts
7) ___________ is the transfer of energy to an object by using a force that causes the object to move in the direction of the force.
A
b. Joules
B
c. Energy
C
a. Work
D
d. Power
8) ____________ is a simple machine that is straight, slanted surface which facilitates the raising of loads.
A
c. Screw
B
b. Fulcrum
C
d. Inclined Plane
D
a. Pulley
9) ___________ is the point on which a lever pivots.
A
c. Screw
B
a. Pulley
C
b. Fulcrum
D
d. Inclined Plane
10) _________ is an inclined plane that is wrapped in a spiral around a cylinder.
A
c. Screw
B
a. Pulley
C
d. Inclined Plane
D
b. Fulcrum
*select an answer for all questions
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