Download What is Energy?

TYPES OF ENERGY
Ch 3
Lesson 1
Forms of Energy
TYPES OF ENERGY
Kinetic Energy,
Potential Energy,
Elastic Potential Energy,
Chemical Energy
and
Thermal Energy
What is Energy?
Energy is the ability to cause change.
What is kinetic Energy?
The energy of motion.
It’s the energy an object has
because it is moving.
What is kinetic Energy?
The faster and object moves, the
more kinetic energy it has.
Kinetic Energy?
The more mass and object has,
the more kinetic energy it has.
Kinetic Energy
A roller coaster speeds
along its track. It has kinetic
energy because it is moving.
What is potential Energy?
Energy that is stored.
There are different types.
• Gravitational
• Elastic
• Chemical
A Roller Coaster...
As it slows to a stop at the top of a drop, it
has potential energy because of where it is.
It has the potential to move because it is
above the ground and has somewhere to go.
Gravitational potential Energy
Potential energy increases if an object’s height above the ground
increase.
Potential energy increases if an object’s mass
increase.
Potential energy
Potential energy of an object is turned into kinetic
energy and transferred to the ground when it lands.
Potential energy
Elastic Potential Energy
Energy stored when an object
is squeezed or stretched.
What is Chemical Potential Energy?
Energy that is available for release from chemical
reactions.
Bond
Energy is released
when the bonds break.
Chemical energy is stored in seeds, and
released by water touching the seed.
What is Chemical Energy?
The chemical bonds
in a matchstick store
energy.
It is transformed into
thermal energy when
the match is struck.
Examples of Chemical Energy
• Energy
spreads
out(heat)
in all
Thermal
Energy
directions.
• Carried by waves
• Spreads out= radiates
• We see it in the form of light.
Carried
•• We
feel itby
aswaves
heat.
Spreadsbyout=
radiates
•• Carried
waves
• Energy moves from one place to another
Thermal
Energy
(heat)
because of differences in temperature.
• Carried by waves
• Spreads out= radiates
Thermal energy moves from hot to cold.
• Carried by waves
QUIZ TIME!
What type of energy
cooks food in a
microwave oven?
ELECTROMAGNETIC
ENERGY
What type of energy is
the spinning plate inside
of a microwave oven?
MECHANICAL ENERGY
What type of energy is shown below?
Chemical Energy
What type of energy is shown below?
Chemical Energy (yummy)
What type of energy is shown below?
Thermal Energy