Chapter 2

Front 1

acid rain 1

Back 1

Acid rain occurs when by-products
of combustion, such as carbon dioxide (COr), nitrous oxides (NO,), and
sulfur oxides (5O,), condense in our atmosphere, only to come back down
to earth with rain.

Front 2

british thermal unit (btu)

Back 2

British thermal
unit (Btu). The Btu is a very small amount of energy.

Front 3

chemical energy

Back 3

Chemical energy is the term used to describe the potential energy
locked within a substance. For instance, 50 1bs.

Front 4

Efficiency

Back 4

Efficiency is a term used to measure the extent to which an energy form
is usefully converted to another form of energy.

Front 5

Electrical energy

Back 5

Electrical energy is the energy associated with the flow of electrons.
Electricity is used extensively in contemporary society to power the
majority of our convenience appliances.

Front 6

embargo

Back 6

The members of the oPEC decided to restrict the
amount of crude oil they would sell to the United States, as a means of
penalizing Americans for consuming too much energy. This type of restric-
-tion
of trade for political means is known as an embargo

Front 7

energy conservation

Back 7

Another popular means of saving energy is
through conservation measures.

Front 8

energy consumptiont

Back 8

When measuring the energy consumptiont or use of energy resources,
of a large city, countryt ot continent, a term known as the quad is often
used.

Front 9

energy conversion

Back 9

Energy conoersion is the changing of one form of energy into another.

Front 10

entropy

Back 10

A measure
of the unavailable
energy in a closed
system.

Front 11

global warming

Back 11

This leads to a phenomenon known as
global warming.

Front 12

greenhouse effect

Back 12

The situation
caused by a layer
of greenhouse
gases surrounding
our planet, produced
by the
burning of fossil
fuels. This layer
does not allow the
heat produced by
the sun to escape
the earth's atmosphere
as easily as
it once did.

Front 13

heat energy

Back 13

Energy with a
Ionger rt'ar.elength
than light energv.
It is generally not
visible to the eye,
but it can be measured
in terms of
temperature. Also
referred to as
infrnred (nergtl.

Front 14

inexhaustible energy

Back 14

Inexhaustible energy sources are those that
will never run out.

Front 15

kinetic energy

Back 15

Energy is either in the form of potential energy or kinetic energy

Front 16

light energy

Back 16

Light energy is energy visible to the eye. It represents a very small
portion of atrl radiant energy, which collectively is known as the
electromagnetic spectrum.

Front 17

mechanical energy

Back 17

is energy produced by mechanical devices, such
as gears, pulleys, levers, or more complex devices, like internal combustion
engines.

Front 18

nonrenewable energy
source

Back 18

A resource that can be replaced when needed.

Front 19

nuclear energy

Back 19

Nuclear enerU is the term associated with the power of the atom.

Front 20

Or ganization of Petroleum
Exporting Countries
(OPEC)

Back 20

The members of the oPEC decided to restrict the
amount of crude oil they would sell to the United States, as a means of
penalizing Americans for consuming too much energy.

Front 21

potential energy

Back 21

is energy waiting to happen. For instance, a gallon of
gasoline can prodlie a tremendous amount of mechanical Power wlren
iroperly coniumed within an automobile engine.

Front 22

quad

Back 22

is an accepted abbreviation for 1 quadrillion Btu. (One
quadrillion is a one followed by fifteen zeros).

Front 23

Nonrenewable energy sources

Back 23

Nonrenewable energy sources are those that
cannot be replaced once used. Fossil fuels, such
as coal, oil, and natural Sast are good examples
of nonrenewable energy sources.