Download energy Power Point

•Types of energy
•7 forms of energy
•Energy Resources
•How Electricity is produced
• 2 types of energy
– Kinetic energy energy in motion, if it is not
moving it does not have kinetic energy.
– Potential energy stored energy in an
object due to its position.
2 things that affect kinetic energy
• Speed
• Mass
• The more speed the more energy it
has
A
B
• The more mass the more energy it has. This is
because it takes more energy to move the bowling ball
A
B
Ball and
chain
Potential energy
Forms of energy
MR. SCENT
• M- Mechanical
• R- Radiant
•
•
•
•
•
S- Sound
C- Chemical
E- Electric
N- Nuclear
T-Thermal
Mechanical Energy: the energy that puts
something in motion. It pulls, pushes, twists,
turns and throws.
Your body converts chemical energy in food to
mechanical energy in your body.
Radiant Energy: also known as light energy is waves
caused by vibrations of electrically charged
particles.
Plants use radiant energy from
the sun during photosynthesis
to make chemical energy for
the plant to use
• Radiant energy type of energy light carries.
• Light can either be absorbed, transmitted, or
reflected.
• If an object absorbs light it will get warmer.
Object
Absorbing
light
Object
Reflecting
light
Object
Transmitting
light
Sound Energy: vibrations or waves caused by
something.
Sound waves travel through a
medium such as air particles, water
or wood (radiant energy does not)
Air particles
• Chemical energy:
is when chemicals break apart
into new chemicals.
• When you start off with something and end with
something different.
energy
Food
Sugar
Molecule
• Electric Energy is the energy of moving electrons
• Energy carried through electrical currents is called
electrical energy.
• Electricity is measured in voltage.
Generating electrical energy
• Electrical energy is formed by a generator
(device that transforms kinetic energy into
electrical energy)
Spinning turbines
Rotate the
Generator
Producing
electricity
How electrical power plants work.
Steam rushes
Through turbines
(fan blades)
Causing them
to spin.
Boiling water creates
Steam which rises
Coal and oil are burned to Create enough
heat to boil water.
• Nuclear energy is energy
taken from the nucleus
of an atom.
• 20% of electrical energy
is produced in a nuclear
power plant.
nucleus
energy
atom
Nuclear power plant
Nuclear Power
• Energy is released when atoms from the element
Uranium (which is radioactive) split apart in a nuclear
reaction.
• This radioactive waste can cause serious harm to
organism. It remains radioactive for thousands of years.
Safe disposal of this waste is important.
• Thermal energy energy that increases with
temperature.
Which has the most thermal energy?
A
B
C
Different kinds of energy can come
from 1 source. What types come this…
(radiant)
Flame gives
Off light
(Thermal)
Candle gives
Off heat
(chemical)
Wax to flame.
Different types of energy are being
transformed from one to another in
this picture.
Law of conservation of energy.
• Energy is not created or destroyed, it just
changes form.
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