14 R 14L 06/8/11 Do Now: Why can’t you see an apple in the dark? Observe, Question, Comment Objective: Students will: explain why some spiders are white.

14 R

14L

06/8/11Do Now: Why can’t you see an apple in the dark?

Observe,Question,Comment Objective: Students will:

•explain why some spiders are white and others are black

06/8/11

You Do #1

You Do #2

You Do #3

Homework:Finish flashcards #15-22

Quiz #3 during NEXT CLASS!!!!Study your flashcards and notes

on pages 12-14 in the notebook.

Do Now: Why can’t you see an apple in the dark?

•Use your notes on p. 12R and your flashcards •Explain in 4-6 sentence paragraph.•Include and underline all these vocab words: Visible Light, Light source, Opaque, Transmit, Reflect, Absorb, Rods and Cones

14L

Do Now: Why can’t you see an apple in the dark?Answer:

In order to have sight, there must be visible light. First, there must be a light source that is giving off the light waves. Then, these waves must be reflected off of an opaque object, such as an apple. An opaque object reflects and absorbs light waves. They do not transmit any light. The light waves that are reflected enter the eye where they hit the rods and cones.

14L

14 R

14L

06/8/11Do Now: Why can’t you see an apple in the dark?

Observe,Question,Comment Objective: Students will:

•explain why some spiders are white and others are black

06/8/11

You Do #1

You Do #2

You Do #3

Notes: Color of Opaque Objects

Notes: Color of Opaque Objects p. 48 1.What is an opaque object? Anything that REFLECTS/ABSORBS light Anything that is not invisible has a color • My examples (name and color):

1. My apple is red. 2. 3.

14 R

2. What 7 colors is white light made out of?

14 R

Left = REDLong wavelengthLow FrequencyLow Energy

Right = VioletShort wavelengthHigh FrequencyHigh Energy

Middle = Orange YellowGreen

BlueIndigo

HOW CAN YOU MEMORIZE THE ORDER OF THE COLORS???

ROY G. BIV

14 R

14L

06/8/11Do Now: Why can’t you see an apple in the dark?

Observe,Question,Comment Objective: Students will:

•explain why some spiders are white and others are black

06/8/11

You Do #1

You Do #2

You Do #3

Notes: Color of Opaque Objects

You Do #1 :“Besides being different colors, how are the light waves similar and different from each

other???”

14 L

Notes: Color (contd) p. 48

14 R

3. What determines the color of an opaque object?

1. The material the object is

made out of

THE COLOR OF THE OBJECT

2. The color of the light striking it

You Do #2-- Why is one apple red and the others are green? What causes

the difference? (on page 14L)

14 R

14L

06/8/11Do Now: Why can’t you see an apple in the dark?

Observe,Question,Comment Objective: Students will:

•explain why some spiders are white and others are black

06/8/11

You Do #1

You Do #2

You Do #3

Notes: Color of Opaque Objects

Notes: Color of Opaque Objects (contd) p. 48

14 R

4. How does the material of the object affect its color???--not all colors have the same WAVELENGTH (RedViolet)--some colors are ABSORBED, other colors are REFLECTED this depends on what the object is made out of

KEY IDEA: THE COLOR OF THE OBJECT WE SEE IS THE COLOR THAT THE OBJECT REFLECTS INTO OUR EYESWe don’t see the other 6 colors because they were ABSORBED by the opaque object!!!

What color is reflected by the leaf? GREEN

What colors are absorbed by the leaf?THE OTHER 6 COLORS!!!

14 R

14L

06/6811Do Now: Why can’t you see an apple in the dark?

Observe,Question,Comment Objective: Students will:

• explain how light interacts with opaque objects•analyze the reasons why a red apple looks red

06/8/11

Notes: Color of Opaque Objects p. 48 You Do #1:

You Do #2:

You Do #3:a. Red Apple

b. White spider

c. Black spider

You Do #3: What color light is REFLECTED by…a. red apple

b. white spider

b. black spider

LIGHT SOURCE

EYE with rods and cones

Absorbs other 6 colors

White light strikes the apple

Red light reflected into the eye

White light strikes the spider

All white light reflected to eyeWhite light strikes the spider

No colors are reflected!!!

All colors are absorbed!!!

No colors are absorbed!!