Download Kinetic vs. Potential Energy

Unit 7: Energy.
Bell Ringer: You are on a roller coaster 92
meters above the ground traveling at 14 m/s.
You weigh 400 N (or approximately 40.8 kg).
What is your mechanical energy? Show your
work and include your units!
Unit 7: Energy. Energy Types and Transformations.
REVIEW
1. Where would you find the most potential
energy on a roller coaster?
2. Where would you find the most kinetic
energy on a roller coaster?
3. What type of energy transformation is
taking place when a roller coaster goes down
a hill?
__________  __________
Unit 7: Energy. Energy Types and Transformations.
Types of Energy
•
•
•
•
•
•
Mechanical
Electromagnetic
Electrical
Chemical
Thermal
Nuclear
Unit 7: Energy. Energy Types and Transformations.
Unit 7: Energy. Energy Types and Transformations.
Mechanical Energy – Sound
• Energy transmitted through
the compression of matter
• Mechanical energy because
it is in moving waves
• Examples: Hearing music
from a radio, thunder
Unit 7: Energy. Energy Types and Transformations.
Thermal Energy (Heat)
The heat energy of an object determines how active its
atoms and molecules are.
A hot object is one whose atoms
and molecules are excited and
show rapid movement.
A cooler object's molecules and
atoms will show less movement.
Unit 7: Energy. Energy Types and Transformations.
Chemical Energy
Energy that is available for
release from chemical
reactions.
The chemical bonds in a
match stick store energy
that is transformed into
thermal energy (fire) when
the match is struck.
Unit 7: Energy. Energy Types and Transformations.
Chemical Energy
Unit 7: Energy. Energy Types and Transformations.
Radiant Energy (Light / Electromagnet)
Involves all energy found
within electromagnetic
spectrum.
These types of energy travel in
waves.
These waves have electrical
properties and magnetic
properties.
Unit 7: Energy. Energy Types and Transformations.
Radiant Energy (Light / Electromagnet)
Electromagnetic Spectrum
Unit 7: Energy. Energy Types and Transformations.
Electrical Energy
Energy caused by the
movement of electrons.
Easily transported through
power lines and converted into
other forms of energy.
Most common energy type
throughout U.S. households.
Unit 7: Energy. Energy Types and Transformations.
Nuclear Energy
A type of potential energy
stored in the nucleus of
an atom and released as
nuclear reactions.
These reactions releases
tremendous amounts of
energy.
Types of Nuclear Energy:
—Nuclear fission reaction: nucleus splits
—Nuclear fusion reaction: nuclei fuse or join together
Unit 7: Energy. Energy Types and Transformations.
Review
What type of energy
cooks food in a
microwave oven?
RADIANT ENERGY
What type of energy is
the spinning plate inside
of a microwave oven?
MECHANICAL ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review
Electrical energy is transported to your
house through power lines.
When you plug an electric fan to a
power outlet, electrical energy is
transform into what type of energy?
MECHANICAL ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
What energy
transformation occurs when
an electric lamp is turned
on?
ELECTRICAL ENERGY

RADIANT ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
What types of energy are shown below?
MECHANICAL
ENERGY &
THERMAL
ENERGY
(Don’t forget
friction!)
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
What types of energy are shown below?
CHEMICAL
ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
What types of energy are shown below?
ELECTRICAL
ENERGY
MECHANICAL
ENERGY
RADIANT
ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
What types of energy are shown below?
CHEMICAL
ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
What types of energy are shown below?
THERMAL
ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
What types of energy are shown below?
CHEMICAL
ENERGY

THERMAL
ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
What types of energy are shown below?
CHEMICAL
ENERGY

RADIANT /
ELECTROMAGNETIC
ENERGY
Unit 7: Energy. Energy Types and Transformations.
Review and Transformations
Draw a flow map showing the flow of energy
transformations in a car from starting vehicle to
driving. You should have 5 different types of energy.
Unit 7: Energy. Energy Types and Transformations.
Sound
(mechanical)
Thermal
Electrical
Mechanical
Chemical
Light
(Radiant/
Electromagnetic)