Transcript Force 5-4 Notes

Sci. 5-4
Energy Resources
Pages 134- 139
A. A energy resource is a natural
resource that can be converted into
other forms of energy in order to do
useful work.
B. Nonrenewable resources cannot
be replaced after they are used or
can only be replaced after a long
period of time.
C. Fossil fuels are nonrenewable resources
formed from the remains of ancient
organisms. Coal, petroleum, and natural
gas are fossil fuels.
D. Fossil fuels are the primary
source of electrical energy
generated in the United States.
E. Nuclear Energy is another way
to generate electricity.
F. Nuclear energy is generated from
radioactive elements such as uranium.
Nuclear Fission- the nucleus of a
radioactive element’s atom is split into two
smaller nuclei, releasing nuclear energy.
G. Renewable resources can be
used and replaced in nature over a
relatively short period of time.
H. Renewable resources- solar
energy, wind energy, energy from
water, geothermal energy (thermal
energy from the heating of earth’s
crust), and biomass (organic matter
such as plants, wood, and waste
that can be burned to release
energy).
I. The sun is the source of most
energy on Earth.
J. Depending on where you live
and what you need energy for, one
energy resource can be a better
choice than another.