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Simple Machines
Test Description: Review Simple Machines
Instructions: Answer all questions to get your test result.
1) Define work.
A
when energy is used
B
when a force is applied to an object
C
when an object moves
D
when an object moves in the direction a force is applied
2) What are the six simple machines
A
Lever, axe, pully, wheel, scissors, hammer
B
lever, pulley, wheel and axle, wedge, inclined plane, screw
C
1st class lever, 2nd class lever, 3rd class lever, wedge, screw
D
block and tackle, fixed pulley, movable pulley. lever, screw
3) What unit is work measured in?
A
Power
B
Joule
C
Newton
D
Watt
4) a machine made up of more than one simple machine is called?
A
a compound machine
B
a convex machine
C
a composed machine
D
a complex machine
5) How many classes of levers are there?
A
3
B
2
C
4
D
5
6) An inclined plane decreases effort force by increasing what?
A
output force
B
time
C
input force
D
distance
7) Which of the following simple machines is composed of two inclined planes?
A
inclined plane
B
wedge
C
pulley
D
screw
8) An inclined plane wrapped around a cylinder is called?
A
Screw
B
Pulley
C
Lever
D
Wedge
9) Which pulley has a greater mechanical advantage
A
One that has a short rope segment
B
Pulleys do not have a mechanical advantage
C
One with many rope segments
D
A moveable pulley
10) Define mechanical advantage.
A
A number that tells you how difficult it is to control a machine.
B
A number that tells you how many moving parts a machine has
C
A number that tells you how much easier a machine will make your work
D
A number that tells you how much more difficult a machine will make your work
11) Which simple machine is composed of circular parts that rotate on a rod or axis.
A
Lever
B
Pulley
C
Screw
D
Wheel and Axle
12) The center pivot point of a lever is called?
A
Wedge
B
Center
C
Fulcrum
D
Pivoter
13) In a first class lever..
A
The fulcrum is in the middle
B
The input force is in the middle
C
The effort force is in the middle
D
The load is in the middle
14) An example of a 2nd class lever is....
A
An axe
B
A wheelbarrow
C
A seesaw
D
A golf club
15) A baseball bat is an example of what type of lever?
A
3rd class
B
Simple
C
2nd class
D
1st class
*select an answer for all questions
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