Visible Light

1
Visible Light Color

• OBJECTIVE
• SWBAT identify the different colors of the
  visible light and compare each of its frequency
  and wavelength.

2
Essential Question

• How do we perceive colors?

3
1. What is visible light?

• -smallest part of the EM spectrum that the human
  eyes can see

Red to Violet (ROYGBIV)
4
What are the different colors of visible light?

• Red lowest energy, longest wavelength
• Orange
• Yellow
• Green
• Blue
• Indigo
• Violet highest energy, shortest wavelength

ROY G BIV
5
Which color has the most energy and short/small
wavelength???
6
Color
Violet the HIGHEST energy and SHORT
wavelength
7
Which color has the lowest energy and long/big
wavelength???
8
Color

• Red the LOWEST energy and LONG wavelength

9
What happens when you wear WHITE on a hot day?
10
How do we get white?

• ???

11
2. White light

• ALL the colors ROY G BIV being REFLECTED

12
What happens when you wear BLACK on a hot day?
13
How do we get black?

• ???

14
3. Black

• ALL colors of rainbow being ABSORBED.

15
Example Fashion

• Fall/Winter Colors

Spring/Summer Colors
16
4. How do we see color?
17
4. HOW DO WE SEE COLORS?

• First, light goes from the source (sun, lamp,
  etc.) to the object.

Second, the color we see is reflected and the
rest is absorbed by the object.
18
WHITE
When all colors are REFLECTED We see WHITE
19
BLACK
When all colors are ABSORBED We see BLACK
20
Summary

• Answer the essential question
• How do we perceive color?

21
Summary

• Answer the essential question
• How do we perceive color?
• Light from sun reflects off object and we see the
  color that is reflected.
• Quick Review Point
• What is the smallest band of the Electromagnetic
  spectrum?

22
HW How We See Light

• 1. House Plant
• What color(s) go in?
• What color (s) go out?

23
Color Balloon Toss

• Light Color!

24
Review

• When white light hits an object, all the colors
  are absorbed except for the color of that object.
• Example
• Blue All colors absorbed except blue, which is
  reflected to eye.
• White No colors are absorbed.
• All colors are reflected to eye. (white light)
• Black All colors are absorbed.
• No colors are reflected to eye.

25
Activity Instructions

• For this activity, you will be given a colored
  balloon. You will see objects of various colors
  on the screen.
• If the color you have is absorbed by the object,
  you need to cover the balloon with your body.
  DONT POP IT!!
• If the color you have is reflected by the
  object, you need to reflect the balloon into the
  air above you.

26
Confused?

• Its okaylets give it a shot.
• All colors are absorbed except

27
Lets get started

• Pay close attention
• to the MAIN color

28
(No Transcript)
29
(No Transcript)
30
(No Transcript)
31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
(No Transcript)
35
(No Transcript)
36
(No Transcript)
37
(No Transcript)
38
(No Transcript)
39
(No Transcript)
40
(No Transcript)
41
(No Transcript)
42
(No Transcript)
43
(No Transcript)
44
(No Transcript)
45
(No Transcript)
46
(No Transcript)
47
(No Transcript)
48
(No Transcript)
49
(No Transcript)
50
(No Transcript)
51
(No Transcript)
52
LAST ONE

• Get Ready!!!

53
(No Transcript)
54
ADD MORE Slides