Chapter 15-Part 1 Question Preview (ID: 30101)


Review 14. TEACHERS: click here for quick copy question ID numbers.

An inclined plane wrapped around a cylinder post is a __________________.
a) pulley
b) ramp
c) screw
d) wedge

A photovoltaic converts __________________________ energy.
a) electrical to radiant
b) chemical to electrical
c) radiant to thermal
d) radiant to electrical

An inclined plane with one or two sloping sides forms a machine called a _______________.
a) pulley
b) lever
c) ramp
d) wedge

The amount by which a machine multiplies an input force is called the _______________.
a) efficiency factor
b) fulcrum
c) mechanical advantage
d) resistance force

The work output of a machine divided by the work input is the _________ of the machine.
a) efficiency
b) effort
c) force
d) power

The rate at which work is done is called
a) efficiency
b) effort time
c) force
d) power

A bar that is free to pivot about a fixed point is a
a) fulcrum
b) lever
c) ramp
d) wedge

A device that does work with only one movement and changes the direction of a force is a (n)
a) compound machine
b) effort machine
c) screw
d) simple machine

A slanted surface used to raise an object is a (n) _______________.
a) efficiency board
b) effort ramp
c) inclined plane
d) wedge

A fixed simple pulley that is used to lift a block does which one of the following?
a) doubles the force required to lift the block
b) decreases the force required to lift the block
c) makes the block easier to lift by changing the direction of the force needed to lift it
d) decreases the force required and changes the direction of the force required

Which one of the following is NOT an example of work being done?
a) the moon orbiting the Earth
b) pushing a box from the bottom of the hill to the top of the hill
c) pulling a sled across a field covered wth snow
d) lifting a book bag off the floor

A blimp flying around over the Super Bowl has ____________________ energy.
a) kinetic and potential
b) kinetic and chemical
c) potential and radiant
d) kinetic and electrical

When you see a change in the environment you know that _____________ has been transferred.
a) energy
b) force
c) heat
d) motion

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