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Energy Test #2 Review
Test Description: Study notes Simple Machines-Complex Machines.
Instructions: Answer all questions to get your test result.
1) Which one is NOT an example of work?
A
holding a cell phone
B
lifting a bookbag
C
pulling a sled
D
pushing a box
2) A single, fixed pulley
A
changes direction of force
B
doubles force
C
reduces and changes direction of force
D
reduces force
3) A slanted surface used to raise an object is called a
A
pulley
B
wheel and axle
C
inclined plane
D
wedge
4) A device that reduces force required to move an object is called a
A
complex machine
B
efficient machine
C
electrical machine
D
simple machine
5) A bar that is free to pivot about a fixed point is a
A
inclined plane
B
lever
C
wedge
D
pulley
6) An inclined plane with one or two sloping sides forms a
A
wedge
B
screw
C
pulley
D
lever
7) An inclined plane wrapped around a cylinder post forms a
A
wedge
B
lever
C
pulley
D
screw
8) A winding mountain road is an example of a
A
lever
B
wheel and axle
C
inclined plane
D
wedge
9) When two or more simple machines work together, they form a
A
efficient machine
B
complex machine
C
electrical machine
D
simple machine
10) Three simple machines listed are basically the same. Which one does NOT belong?
A
inclined plane
B
wheel and axle
C
screw
D
wedge
11) Unlike a fixed pulley, a movable pulley ______ the input force
A
reduces
B
multiplies
C
doesn't change
D
increases
12) The pivot point of a lever is called a
A
fulcrum
B
resistance
C
effort arm
D
force
13) Door knobs and faucet handles are examples of a
A
inclined plane
B
lever
C
pulley
D
wheel and axle
14) Terry is going to use a hammer to pull a nail out of a board. Which hammer will allow him to use the least amount of force?
A
short handle, large claw
B
the hammer will not change the force
C
long handle, large claw
D
short handle, small claw
15) Which simple machines make up a wheel barrow?
A
wedge, wheel and axle
B
lever, pulley
C
lever, incline plane, wheel and axle
D
lever, wheel and axle
*select an answer for all questions
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