Energy unit notes

1. Energy

2. What is energy?
Energy: the ability to do work or cause
change

3. “6 Forms of Energy” Picture Definition/Examples
Kinetic Energy Energy of movement
Ex: walking, falling
Potential Energy Stored energy
Ex: book resting on a table
Thermal Energy of moving particles
(heat)
Ex: heating soup, melting ice cream
Electromagnetic Light/solar energy
Ex: visible light, x-rays
Electrical Energy from moving electrical
charges
Ex: Outlets
Chemical Energy stored within
chemical bonds
Ex: Photosynthesis

4. EdPuzzle

5. Potential
and
Kinetic Energy

6. Potential Energy
Potential Energy: the stored energy in any object or system

7. Kinetic Energy: the energy an object has due to its motion
Kinetic Energy

8. Potential to Kinetic

11. Thermal Energy

12. Heat: the flow or transfer of thermal energy
What is Heat?
● When heat is transferred, thermal
energy always moves from warmer
to cooler objects.

13. Heat vs. Temperature
Now you know what heat is, what is
temperature?
Heat: The flow of thermal energy.
Temperature: The measure of
thermal energy.
● That’s why you can use a
thermometer to take your
temperature!

14. Transfer Process
Heat transfer can occur in
three ways:
1. Conduction
2. Convection
3. Radiation

15. Conduction
Conduction: Transfer of heat by
direct contact
Conduction occurs when the
particles in a material collide
with near particles.

16. Materials that allow electrons to
travel through, like copper
wires, are conductors.
Materials that don’t allow the
flow of electrons, like rubber,
are insulators.
Conductors and Insulators

17. Convection - transfer of
thermal energy from one
part of the material to
another
● Only in liquids and gases
Convection

18. Radiation
Radiation - energy transferred by
electromagnetic waves.
Heat is transferred from the Sun to
Earth by radiation.
The Sun is not the only source of radiation.
All objects emit electromagnetic radiation,
although warm objects emit more radiation
than cool objects.

20. Electromagnetic Energy

21. How much do you already know?

22. “
22

23. Electromagnetic Energy
Electromagnetic energy: radiant or light energy that
travels in waves and spreads out as it goes

24. Electromagnetic Spectrum
Radio
Microwaves
Infrared Visible Light Ultraviolet X-rays Gamma Rays

25. Another Version of the EM Spectrum
25

26. 26

27. Practice!