Download Types of Energy

Energy
Energy
• Energy comes in different forms: mechanical (kinetic and
potential), electrical, chemical, radiant (solar), and thermal.
All matter is made of tiny particles called
atoms
• All matter contains energy
• The total energy of matter depends on the type, state, amount,
and motion of the matter
• Potential energy is the stored energy of matter
• Kinetic energy is active energy
Thermal
• Thermal energy is the energy that is associated with the motion of
the particles in a substance.
• All matter is made up of atoms (particles) that move faster when
they heat up. The faster the particles move, the higher the
temperature.
• Heat energy is the transfer of thermal energy.
• Heat energy always moves from hotter objects to cooler objects.
Radiant
• Energy which is transferred through electromagnetic waves such
as visible light, ultraviolet light or Xrays.
• Solar energy is a type of radiant energy.
• Green plants use solar energy during photosynthesis.
• Most of the energy that we use on Earth originally came from the
Sun.
• Sources of radiant energy include, but are not limited to, stars,
light bulbs, and microwaves.
Chemical
• Chemical energy is energy stored within the chemical bonds in
matter.
• Chemical energy can be released, for example in batteries or
sugar/food, when these substances react to form new substances.
Electrical energy
• Electrical energy is the energy flowing in an electric circuit.
• Sources of electrical energy include: stored chemical energy in
batteries; solar energy in solar cells; fuels or hydroelectric energy
in generators.
Mechanical
• Mechanical energy is the energy due to the motion (kinetic) and
position (potential) of an object.
• When objects are set in motion or are in a position where they can
be set in motion, they have mechanical energy.
Mechanical Potential
• Potential energy is stored energy.
• Mechanical potential energy is related to the position of an
object.
• A stretched rubber band has potential energy. This is called elastic
potential energy.
• A book on a shelf has potential energy. Since gravity can pull the
book to the floor, this is called gravitational potential energy. The
height and mass of an object affect gravitation potential energy.
Gravitational Potential Energy
• Gravitational potential energy is greater when the height of an
object is greater because more kinetic energy was required to
raise the object to the greater height.