Transcript Mrs. Callahan`s Energy

Topic: Energy
Essential Question: How is energy
used in the world?
What is Energy?
Energy is the ability to cause change.
 Everything except feelings or ideas is
made up of either energy or matter.
 Energy does NOT have mass or take up
space.

What are examples and non
examples?

Examples




Light energy
Heat energy
Wind energy
Nuclear energy

Non Examples




Love
Atoms
Hatred
Air
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What is the Law of Conservation of
Energy?
Energy in a system may take on various
forms (e.g. kinetic, potential, heat, light).
 The law of conservation of energy states
that energy may neither be created nor
destroyed


It just CHANGES forms!
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What is Potential Energy?

Potential Energy is stored in matter,
waiting to be released.
What Are Examples?

An arrow being stretched by a
bow before it is released

Food for our bodies


A rock at the top of a hill
Fuel for our cars
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What is Kinetic Energy?

Kinetic energy is the energy of motion
that is released from stored energy.
Examples


Object rolling down hill
Arrow released from bow

Muscles moving

A car moving
Examples
Potential
Energy when
up ready to be
released.
Kinetic Energy
when it moves
up in down by
energy from
string
Examples
For the biker the bottom of the hill is a point of potential
energy
Going up the hill energy is coming in which means the
biker is going through kinetic energy.
Biker waiting on top of the hill to go down is potential energy.
Going down the hill energy is going out which means the
biker is going through kinetic energy.
For the biker the bottom of the hill is a point of potential
energy
Examples
Potential energy- High
Kinetic energy- Low
Potential energy- High
Kinetic energy- Low
Potential energy- High
Kinetic energy- Low
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What Are Other Energies?

The way to remember the other energies
is to remember MRS. CENT
Mechanical
 Radiant (light)
 Sound
 Chemical
 Electrical
 Nuclear
 Thermal (heat)

M- Mechanical Energy

Mechanical energy is energy generated
through movement.
R- Radiant (light) Energy

Radiant energy is energy from
electromagnetic waves.
Sound Energy

Sound energy is vibrations that moves
through a solid, liquid or gas to our ears.
Chemical Energy

Chemical energy is energy released from
a chemical reaction.
Electrical Energy

Electrical energy is energy through
electricity.
Nuclear Energy

Nuclear energy is energy released
during a nuclear reaction generally
through fusion or fission.
Thermal (Heat) Energy

Energy that changes the temperature of
an object.
Finished With Notes
1.
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3.
4.
Write a 4-5 sentence summary over the
Essential Question.
Glue notes onto the right hand page.
Pick from the following box
assignments to complete on the right
page: #1, #2 or #5
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