WorksheetsWork and Simple Machines Review
Total questions: 18
Worksheet time: 9mins
Name
Class
Date
1.
Which simple machine is thick at one end and tapers to a sharper edge at the other end?
a)
wheel and axle
b)
pulley
c)
wedge
d)
lever
2.
a grooved wheel with a rope wrapped around it
a)
inclined plane
b)
lever
c)
pulley
d)
wheel and axle
3.
What is work?
a)
a force exerted on an object
b)
movement of an object without a force
c)
a push or pull exerted on an object
d)
a force exerted on an object that causes it to move
4.
A simple machine ___________.
a)
makes work harder
b)
makes work easier
c)
reduces the amount of work
d)
increases the amount of work
5.
Which position would be the best position for the fulcrum to decrease the effort needed to lift the weight?
a)
1
b)
2
c)
3
d)
4
6.
If you wanted to lift a heavy box using a lever, then you should ___________.
a)
move the fulcrum closer to you
b)
move the fulcrum closer tot the box
c)
move the fulcrum to the middle
d)
move the box as far as possible from the fulcrum
7.
Which inclined plane would require the least amount of effort force?
a)
A
b)
B
c)
C
d)
D
8.
A ____________ is made of rigid bar and a fulcrum.
a)
lever
b)
screw
c)
pulley
d)
wheel and axle
9.
an inclined plane wrapped around a cyclinder
a)
pulley
b)
screw
c)
wheel and axle
d)
lever
10.
What unit is used to measure force?
a)
Joules
b)
Newtons
c)
meters
d)
m/s
11.
What unit is used to measure work?
a)
m/s
b)
Joules
c)
Newtons
d)
meters
12.
How much work is done on an object where a force of 10 Newtons is applied over a distance of 10 meters?
a)
20 Joules
b)
100 Joules
c)
20 Newtons
d)
0 Joules
13.
What simple machine is used in all of the following jobs: raising the blinds on a window, lifting a car with a construction crane, and using a block and tackle to move a box.
a)
lever
b)
pulley
c)
wheel and axle
d)
inclined plane
14.
a fixed point that a lever rotates around
a)
screw
b)
pulley
c)
fulcrum
d)
wedge
15.
This device is used to measure force. What is it called?
a)
sling psychrometer
b)
force scale
c)
spring scale
d)
Newton Scale
16.
Moveable pulleys ______________.
a)
increases the force needed
b)
reduces the amount of force needed
c)
force stays the same
d)
change the distance
17.
The efficiency of a machine is always less than 100% because ___________.
a)
the work input is too small
b)
the work output is too great
c)
some work input is lost to friction
d)
the object doesn't move
18.
Which requires the least amount force?
a)
figure A
b)
figure B
c)
figure C
d)
figure D
100 %
