Intro To Energy Flashcards
Chemical Energy
is energy stored in the bonds of atoms and molecules.
It is the energy that holds these particles together. Biomass, petroleum,
natural gas, and propane are examples of stored chemical energy.
Photosynthesis
During photosynthesis, sunlight gives plants the energy they need to
build complex chemical compounds. When these compounds are later
broken down, the stored chemical energy is released as heat, light,
motion, and sound.
Stored Mechanical Energy
is energy stored in objects by the
application of a force. Compressed springs and stretched rubber bands
are examples of stored mechanical energy.
Nuclear Energy
is energy stored in the nucleus of an atom—the energy
that holds the nucleus together. The energy can be released when the
nuclei are combined or split apart. Nuclear power plants split the nuclei
of uranium atoms in a process called fission. The sun combines the
nuclei of hydrogen atoms into helium atoms in a process called fusion.
In both fission and fusion, mass is converted into energy, according to
Einstein’s Theory, E = mc2
.
Gravitational Energy
is the energy of position or place. A rock resting
at the top of a hill contains gravitational potential energy. Hydropower,
such as water in a reservoir behind a dam, is an example of gravitational
potential energy.
Potential Energy
is stored energy and the energy of position, or
gravitational energy. There are several forms of potential energy
Kinetic Energy
is stored energy and the energy of position, or
gravitational energy. There are several forms of potential energy
Electrical Energy
is the movement of electrons. Everything is made of
tiny particles called atoms. Atoms are made of even smaller particles
called electrons, protons, and neutrons. Applying a force can make
some of the electrons move. Electrons moving through a wire are called
electricity. Lightning is another example of electrical energy
Radient Energy
is electromagnetic energy that travels in transverse
waves. Radiant energy includes visible light, x-rays, gamma rays, and
radio waves. Light is one type of radiant energy. Solar energy is an
example of radiant energy.
Thermal Energy
or heat, is the internal energy in substances—the
vibration and movement of atoms and molecules within substances.
The faster molecules and atoms vibrate and move within substances,
the more energy they possess and the hotter they become. Geothermal
energy is an example of thermal energy.
Motion Energy
is the movement of objects and substances from one
place to another. According to Newton’s Laws of Motion, objects and
substances move when a force is applied. Wind is an example of motion
energy.
Sound Energy
is the movement of energy through substances in
longitudinal (compression/rarefaction) waves. Sound is produced
when a force causes an object or substance to vibrate. The energy is
transferred through the substance in a wave
Law Of Conservation Of Energy
Energy neither created nor destroyed.
Non renewable energy
called nonrenewable because they cannot
be replenished in a short period of times include coal, petroleum, natural gas,
propane, and uranium.
Renewable energy
include biomass, geothermal, hydropower,
solar, and wind. They are called renewable energy sources because their
supplies are replenished in a short time.