Wave Propertiesfghjjhuuchhdhhhhhmmdddj.ppt

nmsmmnn

1. 1
Wave Properties &
Types of Waves

2. 2
Wave
•Wave -Rhythmic disturbance that
carries energy through matter
and space
•ALL WAVES CARRY ENERGY!
•Pulse –one wave that travels
through a medium
•Continuous waves –waves that
repeatedly move up and down

3. 3
Transverse Waves
•Transverse waves –matter
in the medium moves back
and forth at right angles to
the direction that the wave
travels.

4. 4
Parts of a Transverse Wave
•Crest –top of a wave
•Trough –bottom of a wave

5. 5
Parts of a Transverse Wave
•Amplitude –½ the height of a wave
•Relates to the amount of energy
carried by the wave

6. 6
Parts of a Transverse Wave

7. 7
Parts of a Transverse Wave
•Wavelength –the length of one
cycle of a wave
•Abbreviated by using the symbol, λ

8. 8
Transverse Wave
•Frequency –how many
cycles (waves) are
completed in a given time
(usually 1 second)

9. 9
Compression/
Longitudinal Waves
•Compressional waves –matter
in the medium moves in the
same direction that the wave
travels. Example: Sound waves

10. 10
Parts of a compression
wave
Compression –the area where the
particles are more dense

11. 11
Parts of a compression
wave
Rarefaction –The less dense area of the wave

12. 12
Parts of a compression
wave
Wavelength –One complete cycle of a wave

13. 13
Surface Waves
•both transverse & compressional;
•examples: water waves,
seismic waves

14. 14
Medium
•Most waves need something
to travel on (or through)
•The substance through
which a wave travels is a
medium

15. 15
Standing Waves
•Appear to be standing still
•Standing waves are caused
by two waves continuously
interfering with each
other.

16. 16
Types of Waves…

17. 17
Reflection
•The angle at which a ray
strikes a surface is equal
to the angle at which it is
reflected

18. 18
Reflection

19. 19
Reflection

20. 20
Reflection

21. 21
Reflection

22. 22
Period and Frequency
•Period (T) –time it takes for
one wave to pass
•The unit of a period is the
second (s)
•Frequency (f) –the number of
waves that pass each second
•The unit of frequency is Hertz
(Hz)

23. 23
Formula 1
•Frequency = 1/ period
•f = 1/T

24. 24
Formula 2
•Frequency = # waves / time
•f = # waves / t

25. 25
Formula 3
•Speed = frequency x
wavelength
•S = f x λ