2. FALCON FOCUS

3. Reminders 1. Quiz Friday on 8P3A1 &2 2. ALL WORK IS DUE TOMORROW
-WEBQUEST
WAVE WORKSHEET
HW FOR TONIGHT
3 STUDY!!! BE RESPONSIBLE AND DO THE RIGHT THING

4. OBJECTIVE STUDENTS WILL BE ABLE TO
1. DEFINE AND LABEL FREQUENCY, AMPLITUDE, AND WAVELENGTH ON A WAVE
2. EXPLAIN HOW FREQUENCY, AMPLITUDE, AND WAVELENGTHS INTERELATE.
3. CALCULATE THE SPEED OF A WAVE

5. INTRODUCTION TO WAVES
Standard 8.P.3 Students will demonstrate an understanding of the properties and behaviors of waves.
Performance Indicator
8.P.3A.2 Develop and use models to exemplify the basic properties of waves (including frequency, amplitude, wavelength, and speed).

6. PROPERTIES OF WAVES
1. FREQUENCY
2. AMPLITUDE
3. WAVELENGTH
4. SPEED

7. FREQUENCY

8. Frequency
Frequency is a measure of how many waves pass a point in a certain amount of time.
The higher the frequency, the closer the waves are together and the greater the energy carried by the waves will be.
The lower the frequency, the farther apart the waves are.

9. WHAT IS THE FREQUENCY OF THE WAVE BELOW?

10. Frequency

12. FREQUENCY
Frequency is measured in Hertz (Hz) or cycles per second. The frequency is often represented by the lower case “f.”
The formula for frequency is: f=1/T (T means Time or Period)

13. CHECK POINT DEFINE FREQUENCY ONE WAVE CYCE WOULD INCLUDE WHAT?
LOWER THE FREQUENCY, _______ THE WAVES
HIGHER OR GREATER THE FREQUENCY, _______ THE WAVES.
HOW WOULD YOU DEMONSTATE A WAVE WITH LOW FREQUENCY?
HOW WOULD YOU DEMONSTRATE A WAVE WITH HIGH FREQUENCY?

14. CHECK POINT
WHAT IS FREQUENCY MEASURED IN OR WHAT IS THE UNIT FOR FREQUENCY?
WHAT IS THE SYMBOL FOR THE UNIT FOR FREQUENCY?
FREQUENCY IS REPRESENTED BY WHAT?
WHAT IS THE FORMULA FOR FREQUENCY?

15. AMPLITUDE

16. Amplitude (HEIGHT OF THE WAVE)
Amplitude is a measure of the distance between a line through the middle (REST POSITON) of a wave and a crest or trough.
The greater the force that produces a wave, the greater the amplitude of the wave and the greater the energy carried by the wave.
In a transverse wave the higher the wave, the higher the amplitude.
Sounds with greater amplitude will be louder;
light with greater amplitude will be brighter.

17. Amplitude

18. Parts of a Transverse Wave
The amplitude is the peak (greatest) value (either positive or negative) of a wave. The distance from the undisturbed level to the trough or crest.

19. Amplitude

20. WHICH WAVE HAS THE GREATER AMPLITUDE?

23. CHECK POINT DEFINE AMPLITUDE
A GREATER OR HIGHER AMPLITUDE HAVE WHAT TYPE OF ENERGY?
THE AMPLITUDE IS KNOWN AS WHAT?
SOUNDS WITH A SMALLER AMPLITUDE WILL HAVE WHAT KIND OF SOUND?
LIGHT WIH A SMALLER AMPLITUDE WILL APPEAR WHAT?

24. WAVELENGTH

25. Wavelength DISTANCE OF A WAVE FROM CREST TO CREST OR TROUGH TO TROUGH)
Wavelength is a measure of the distance from the crest on one wave to the crest on the very next wave or it can be from trough to trough.
Shorter wavelengths are influenced by the frequency.
A higher frequency causes a shorter wavelength and greater energy.
A lower frequency causes longer wavelengths and less energy.

26. Wavelength

27. Wavelength

29. Parts of a Transverse Wave
The wavelength is the horizontal distance, either between the crests or troughs of two consecutive waves.

34. WAVELENGTH SYMBOL
The wavelength is usually represented by the Greek letter lambda

35. CHECK POINT DEFINE WAVELENGTH HIGHER FREQUENCY HAVE _____ WAVELENGTHS
LOWER FREQUENCY HAVE ______ WAVELENGTHS
WAVELENGTHS ARE INFLUENCED BY WHAT?
How would you describe a wavelength in a compressional wave?

36. Speed or Velocity of a Wave

37. Speed
Speed is a measure of the distance a wave travels in an amount of time.
The speed of a wave is determined by the type of wave and the nature of the medium.
As a wave enters a different medium, the wave’s speed changes.
Waves travel at different speeds in different media.

38. Speed
All frequencies of electromagnetic waves travel at the same speed in empty space.