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ENERGY
What is it?
Where is it used?
Are there different types of energy?
What is energy?
Energy is the ability to do work
Are there different types of energy?
Yes, they are: kinetic, potential, thermal,
gravitational, sound, light, elastic,
electromagnetic, chemical, nuclear, mass
energies
Where is it used?
Energy is used everywhere
Thermal Energy
• What is it?
The kind of energy that is related to and/or
caused by heat.
Thermal energy is the difference between
the internal energy of an object and the
amount that it would have at absolute
zero.
Where does thermal energy
originate from?
• The main source of all thermal energy is
the sun
• Thermal energy can also be created when:
– You create a greater amount of friction
– Apply heat to a substance
Real Life Examples
Thermal Energy is used when cooking on
the grill or over a fire!
Example:
Marshmallows
Steak
Fish
More Real Life Happenings
Have you ever got sunburn so bad, it hurt
to move? This is another example of
thermal energy. When the particles on
your skin speed up and become heated,
this produces the pain you feel.
…And More
Metal Refineries use thermal energy to
heat the metal until it melts. They can then
reform it into a more usable shape.
…..
When you boil a pot of water, you are
contributing energy to the bottom of the pot.
The heat makes the particles move faster
which creates thermal energy.
More Real Life Instances
Candles? Yes. They give off heat
throughout the air. The molecules in the air
begin to move faster and begin to warm.
And one final example
Pencil Sharpener – When two objects rub
together it creates friction. If a pencil
sharpener spins the pencil at an extreme
rate, the warmer it will be. This is why,
when you touch the pencil tip, you feel a
slight amount of warmth.
Conversion 1
Electrical Energy to Thermal Energy
When an object is plugged in, it creates an
electrical charge. The electrical charge
allows the object to move. As the object
moves at any rate, slow or fast, it becomes
thermal energy.
Conversion 2
Mechanical Energy to Thermal Energy
When an objects motion changes direction,
some of the energy of the motion of the object is
converted into thermal energy. This is because
friction creates heat. A basketball can be an
example. When the ball is bounced, it heats up
due to thermal energy which is coming from the
mechanical energy of the balls movement.
Thermal Energy Used Everyday
Interesting Facts
• When thermal energy is applied to a
substance, the average velocity of the
particles or molecules which make up the
substance increase and become warmer
• Thermal energy depends on the mass,
temperature, and phase of an object
Works Cited
• We used the following cites for some of
our information
- www.wikipedia.com
- www.discover.edventures.com
- www.coolcosmos.ipac.caltech.edu