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