This document examines various forms of energy and energy transformations. It defines energy as the ability to do work. There are two main types of energy: kinetic energy, which is the energy of motion, and potential energy, which is stored energy. The document then describes five specific forms of energy - radiant or light, sound, heat/thermal, electrical, and mechanical. For each form, it provides a definition and brief explanation. Finally, it notes that energy can be transferred between forms, such as from mechanical to thermal or electrical to light.

1. Energy Forms and
Transformations
Objective: Examine the various
forms of energy in order to
identify and describe specific
energy transformations.

2. Energy
• the “stuff” that makes “stuff
do stuff”
OR
• the ability to do work. (W=F x
D)
(F=force d=distance)

3. Types (kinds) of Energy
• KE (kinetic energy)- the energy of motion
• PE (potential energy)- energy that is
stored

4. Forms of energy
• Radiant or Light
• Sound
• Heat/Thermal
• Electrical
• Mechanical

5. What is Radiant or Light
Energy?
• Produced when atoms absorb energy from an
outside source and release energy as
electromagnetic radiation
• Most are invisible except for visible light
• UV rays, X-rays, radio waves

6. Light Energy
• Travels in straight line (waves)
• We can change the direction it travels
• The light wave can reflect off a shiny surface
• If the wave is bent the image will be refracted
• The light wave can be split into colors when it
refracts

7. What is Sound Energy?
 A form of energy made by vibrations
• When an object vibrates it causes the air
particles around it to move.
• These particles bump into particles close to
them and this continues until they run out of
energy.

8. What is Thermal Energy?
o Heat energy
o The heat energy of an object
determines how active its
atoms 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.

9. What is Electrical Energy?
o Energy caused by
the movement of
electrons
o Easily transported
through power lines
and converted into
other forms of energy

10. What is Mechanical Energy?
o Energy due to a
object’s motion (kinetic)
or position (potential).
The bowling ball has
mechanical energy.
When the ball strikes
the pins, mechanical
energy is transferred to
the pins!

11. Examples of Mechanical Energy

12. Energy Transfer
Electrical
Sound
(mechanical)
Light
(Electromagnetic)
Thermal
Mechanical