Energy Test #2 Review Question Preview (ID: 33845)


Study Notes Simple Machines-Complex Machines. TEACHERS: click here for quick copy question ID numbers.

A bar that is free to pivot about a fixed point is a
a) pulley
b) lever
c) inclined plane
d) wedge

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

A slanted surface used to raise an object is called a
a) pulley
b) wheel and axle
c) inclined plane
d) wedge

A single, fixed pulley
a) doubles force
b) reduces force
c) changes direction of force
d) reduces and changes direction of force

Which one is NOT an example of work?
a) holding a cell phone
b) pushing a box
c) pulling a sled
d) lifting a bookbag

An inclined plane with one or two sloping sides forms a
a) pulley
b) lever
c) screw
d) wedge

An inclined plane wrapped around a cylinder post forms a
a) lever
b) pulley
c) screw
d) wedge

A winding mountain road is an example of a
a) lever
b) inclined plane
c) wedge
d) wheel and axle

When two or more simple machines work together, they form a
a) complex machine
b) efficient machine
c) electrical machine
d) simple machine

Three simple machines listed are basically the same. Which one does NOT belong?
a) screw
b) inclined plane
c) wedge
d) wheel and axle

Unlike a fixed pulley, a movable pulley ______ the input force
a) reduces
b) increases
c) multiplies
d) doesn't change

The pivot point of a lever is called a
a) effort arm
b) resistance
c) fulcrum
d) force

Door knobs and faucet handles are examples of a
a) inclined plane
b) wheel and axle
c) pulley
d) lever

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) short handle, small claw
c) long handle, large claw
d) the hammer will not change the force

Which simple machines make up a wheel barrow?
a) lever, incline plane, wheel and axle
b) wedge, wheel and axle
c) lever, wheel and axle
d) lever, pulley

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