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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 energy is used
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
block and tackle, fixed pulley, movable pulley. lever, screw
C
1st class lever, 2nd class lever, 3rd class lever, wedge, screw
D
lever, pulley, wheel and axle, wedge, inclined plane, screw
3) What unit is work measured in?
A
Newton
B
Watt
C
Power
D
Joule
4) a machine made up of more than one simple machine is called?
A
a complex machine
B
a convex machine
C
a composed machine
D
a compound machine
5) How many classes of levers are there?
A
4
B
2
C
5
D
3
6) An inclined plane decreases effort force by increasing what?
A
time
B
input force
C
distance
D
output force
7) Which of the following simple machines is composed of two inclined planes?
A
inclined plane
B
screw
C
wedge
D
pulley
8) An inclined plane wrapped around a cylinder is called?
A
Wedge
B
Screw
C
Pulley
D
Lever
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
A moveable pulley
D
One with many rope segments
10) Define mechanical advantage.
A
A number that tells you how many moving parts a machine has
B
A number that tells you how much more difficult a machine will make your work
C
A number that tells you how much easier a machine will make your work
D
A number that tells you how difficult it is to control a machine.
11) Which simple machine is composed of circular parts that rotate on a rod or axis.
A
Wheel and Axle
B
Screw
C
Lever
D
Pulley
12) The center pivot point of a lever is called?
A
Pivoter
B
Center
C
Wedge
D
Fulcrum
13) In a first class lever..
A
The input force is in the middle
B
The effort force is in the middle
C
The load is in the middle
D
The fulcrum 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
1st class
B
2nd class
C
Simple
D
3rd class
*select an answer for all questions
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