Download Forms of Energy

Forms of Energy
There are two main forms of energy – potential and kinetic
1. Potential energy is energy that isn't being used yet. It is
stored. It is also the energy of position, sometimes called
gravitational energy. There are different types of PE
a. Chemical PE is stored in bonds between atoms and
molecules. When these bonds are broken they
release energy as heat, light, motion, and sound. (Ex:
coal, oil, propane, and food)
b. Elastic PE is stored by something that can stretch. It
is found in objects that want to bounce back into
their natural shape. (Ex: guitar string and rubber
band)
c. Nuclear PE is energy which holds together the
nucleus of an atom. It is released when atoms are
split open (fission) or smashed together (fusion)
d. Gravitational PE is energy stored due to height and
where it is placed. A roller coaster at the top of its
rails has gravitational energy & water held behind a
dam's reservoir.
2. Kinetic Energy is energy which is being used. It is the
energy of motion. There are different types:
a. Electrical KE is caused by the movement of
electrons. (Ex. Lightning and electricity in our
homes)
b. Radiant KE (electromagnetic or light) is energy that
comes from the waves of the electromagnetic
spectrum. (Ex. Light, x-rays, gamma rays, ultraviolet
rays, infrared rays, microwaves, & radio waves)
c. Thermal KE is heat. Heat is caused by the movement
of atoms and molecules within a substance. Heat
moves from warmer to cooler.
d. Motion KE (mechanical) is energy caused by objects
or substances that are moving. (Ex. Tides & wind)
e. Sound KE is caused by vibrations or back-and-forth
movements of matter. They can be compressional
or longitudinal waves.