1. EQ: How does energy impact wave behavior?
November page 101
DO: I will be able to explain the nature of sound waves frequency, pitch, and how the human ear hears.
EQ: How does energy impact wave behavior?
Explain how frequency and pitch change how we perceive sound.
How are Hertz measured?
How does the phase of matter encountered effect a wave?

2. Think about it:
Why can sound travel faster through warm air than cold air?
Why does sound travel longer through denser mediums?

10. Ear and Sound How we hear. Sound is collected by the outer ear.
The tympanic membrane (ear drum) vibrates and transfers the sound to the inner ear.
The malleus (hammer) vibrates hitting the incus (anvil) which vibrates the stapes (stirrup) before vibrating the cochlea.
The cochlea vibrates and sends a message to the cochlear nerve (auditory nerve).
The auditory nerve transmits a message to the brain.
The brain interprets the information from the auditory nerve and you hear a particular sound.

11. CLOSURE
Draw and explain ROYGBIV and the pencil distortion in your notebook.

12. EQ: Explain how frequency and pitch change how we perceive sound.
November page 103
DO: I will be able to explain the interaction of light and sound on the human body.
EQ: Explain how frequency and pitch change how we perceive sound.
How are Hertz measured?
What is the visible spectrum?

13. Ear and Sound How we hear. Sound is collected by the outer ear.
The tympanic membrane (ear drum) vibrates and transfers the sound to the inner ear.
The malleus (hammer) vibrates hitting the incus (anvil) which vibrates the stapes (stirrup) before vibrating the cochlea.
The cochlea vibrates and sends a message to the cochlear nerve (auditory nerve).
The auditory nerve transmits a message to the brain.
The brain interprets the information from the auditory nerve and you hear a particular sound.

14. The Ear

15. 1. The outer ear collects sound waves.

16. 2. The sound waves make the eardrum vibrate.

17. 3. The eardrum causes 3 tiny bones to vibrate. (hammer, anvil, stirrup)

19. 4. The tiny bones make the fluid in the cochlea vibrate.

20. 5. This causes tiny hair cells to vibrate (in cochlea).

21. 6. Vibrations are passed to the auditory nerve which leads to the brain.

22. 7. The brain interprets sound!

23. What did one ear say to the other ear before they went over the waterfall?

24. What did one ear say to the other ear before they went over the waterfall?
Ear we go!

25. Doppler Effect

26. 21 weeks 9 weeks Sonogram/Ultra Sound How do these processes work?
Are they similar or different? Explain each.
9 weeks
21 weeks

27. EQ: What is the visible spectrum?
November page 105
DO: I will be able to explain the interaction of light and sound on the human body.
EQ: What is the visible spectrum?
Explain how the electromagnetic spectrum and the human eye work together.
How does wave frequency impact our sight and sound?

28. Eye and Light How we see. Light passes through the transparent cornea.
The light that passes through the opening of the pupil, the amount of light is controlled by the iris contracting and releasing.
The light is reflected through the lens and the image is projected upside down on the retina.
The cones on the retina respond to different frequencies of light (colors)
The optic nerve transmits information to the brain.
The brain interprets the information from the optic nerve and you see the world around you.

29. Why do we see color? Light Wavelengths
Light Wavelengths
When our eyes see different wavelengths of light in the visible spectrum, we see colors.
NSF North Mississippi GK-8

30. Only red light is reflected
Seeing color
What we actually see is the light an object reflects or in some cases the light an object produces.
For example, a red book only reflects red light:
Homework
White
light
Only red light is reflected
NSF North Mississippi GK-8

31. A white hat would reflect all seven colours:
A pair of purple pants would reflect purple light
(and red and blue, as purple is made up of red and blue):
Purple light
A white hat would reflect all seven colours:
White
light
NSF North Mississippi GK-8

32. Using coloured light What about an outfit? Shirt looks red White light
Shorts look blue
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33. All visible light is absorbed.
Black
When you see black, all of the wavelengths of light are absorbed and no light is reflected back at you.
Nothing is reflected.
All visible light is absorbed.
White
light
NSF North Mississippi GK-8

35. The Electromagnetic Spectrum
Different wavelengths of EM waves.
These wavelengths of light and others make up a spectrum.
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36. NSF North Mississippi GK-8
On the Spectrum…
Left Side
Right Side
Type of Wave
Wavelength
Frequency
Energy
Radio
Gamma
Long
Short
Low
High
Low
High
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37. VISIBLE LIGHT Electromagnetic waves we can see.
NSF North Mississippi GK-8

38. NSF North Mississippi GK-8
Visible Spectrum
The visible spectrum contains seven colors.
Each of these colors corresponds with a particular wavelength.
Longest wavelength= red light
Shortest wavelength= violet (purple) light
NSF North Mississippi GK-8

39. How can I remember the seven colors of the visible spectrum?
ROY G BIV
RANGE
REEN
LUE
NDIGO
IOLET ED
ELLOW
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40. NSF North Mississippi GK-8
White Light
White light is not a single color; it is made up of a mixture of the seven colors of the rainbow.
NSF North Mississippi GK-8

41. NSF North Mississippi GK-8
Colour
We can demonstrate this by splitting white light with a prism:
This is how rainbows are formed: sunlight is “split up” by raindrops.
NSF North Mississippi GK-8

42. Higher Order Thinking Questions
Explain how waves behave in different mediums.
Explain how waves and your ear allow you to hear.
Explain how waves and your eyes enable you to see.
Define and label types of waves.

43. I AM CHECKING A-G today!!