1. Wavelength Properties of Energy
Comparing Wave Properties & Energy

2. Essential Standard
6.P.1Understand the properties of waves and the wavelike property of energy in earthquakes, light and sound waves.

3. Clarifying Objective
6.P .1.1 Compare the properties of waves to the wavelike property of energy in earthquakes, light and sound.

4. Essential Question
How are Earthquake waves, Light waves, & Sound waves all alike??
How are waves created?
What is light?
What is sound?
What is a Seismic Wave?

5. Waves Transmit Energy Waves transmit energy & not matter
Waves are simply a way for energy to go from one place to another (moving energy)
Think of a roller coaster: the energy is you in the coaster & the wave is the track that moves up & down

6. Energy Vibrations Energy causes materials to VIBRATE
These vibrations are carried on waves
These waves transmit/transfer energy from one place to another

7. Essential Question Get with a partner and answer…
How are waves created?

8. Waves Travel through Matter
Almost all waves travel through some type of matter
Matter that waves have to travel is either a
Solid
Liquid
Gas
The only type of wave that does not have to travel through matter is an ELECTROMAGNETIC (light wave) WAVE which can travel through a vacuum

9. Earthquake Energy All an Earthquake is ENERGY moving through a solid
The energy of the Earthquake travels on a wave
Earthquake energy is called SIESMIC WAVES

10. Earthquake Energy
Earthquakes use Longitudinal waves to move through the land (solid)
Sometime the energy of the Earthquake is so great that it splits the land in two

11. Longitudinal Wave
Earthquake energy travels in Longitudinal waves through a solid
The energy moves on the wave because of compression & rarefaction repeating itself similar to a SLINKY

12. Seismic Waves http://www.youtube.com/watch?v=yOGoKCK17a4
0:00-1:08

13. Essential Question Get with a partner and answer…
What is a Seismic Wave?

14. Sound Energy Sound Energy also travels on a Longitudinal Wave
Sound Energy however can travel through all three types of matter
Solid
Liquid
Gas

15. Sound Energy
Sound Energy begins to travel when there is some type of VIBRATION
This VIBRATION travels through either a solid, liquid or gas

16. Sound Energy
Sound Energy bumps the vibration into PARTICLES (particles make up the solid, liquid, or gas)
The particles continue to bump into each other passing the sound energy on through a longitudinal wave

17. Essential Question Get with a partner and answer…
What is a Sound Wave?

18. Light Energy Light Waves (Electromagnetic Waves) are Transversal waves
They move energy up and down through space
Light Waves (Electromagnetic Waves) can but do not have to move through a medium

19. Light Energy
Light waves (Electromagnetic Waves) are the only forms of energy that can travel through a vacuum
This means that light is the only form of energy that can travel through outer space is light energy which
It is important to remember that energy from the sun is light energy (Electromagnetic Energy) and must pass through a vacuum

20. Essential Question
Get with a partner and answer…
What is light?

21. Essential Question Get with a partner and answer…
How are Earthquake waves, Light waves, & Sound waves all alike??

22. EOG Questions How are earthquakes, sound, and light waves alike?
A) They transmit energy.
B) They carry matter.
C) They travel in space.
D) They can be seen.

23. Important Points Energy causes materials to vibrate
The energy is carried on waves
Energy must travel through a medium in all instances except one (light energy)
Mediums include solids, liquids or gases
Earthquake energy has wavelike properties (Longitudinal)
Sound energy has wavelike properties (Longitudinal)
Light energy has wavelike properties (Transversal)