Study Hall Do homework. Read silently. Do not talk. Sharpen your pencils and go to your assigned...

Study Hall

Do homework. Read silently. Do not talk.

Sharpen your pencils and go to your assigned seat

Warm-Up

Without moving your head, look up, Look down, Look all around,

In your notebook, explain how can you do this with your eye?

Explanation

• You have 6 muscles attached to your eyeball which allows you to move your eye so you can look in different directions without moving your head.

1st Block:Visible Light Spectrum– “ROY G BIV”

• R-red • O-orange • Y-yellow • G-green • B-blue • I-indigo • V-violet

• Human eyes only respond to “visible light wavelengths” within the electromagnetic spectrum

Write these notes!

Reflected Light: Introduction Video

• Discovery Ed video “ Reflected Light” (1:08 minutes)

Reflected Light - Notes

• Light can be absorbed or reflected. • Absorbed light = the colors we do not see • Reflected light = the colors we see

Write these notes!

Reflected Light - Notes

• White light = contains all the colors (ROYGBIV)

• White light shining on an apple:The red light bounces off the apple and enters

our eyes while all the other colors are absorbed

Write these notes!

Reflected Light - Notes

• White objects reflect all the colors (ROYGBIV) • wear light colored clothing in the summer, we feel

cooler (reflecting more)

• Black light reflects no color, it absorbs all the colors of light

• wear dark clothing in the summer, we feel hotter (absorbing more)

Write these notes!

(2nd & 3rd Block) Now it’s your turn….

• Pick five items in the classroom and for each item list what color is being reflected and what colors are being absorbed.

Ms. Maas’ Five!

1. Black Lab Table Tops = it is absorbing all colors (ROYGBIV) and reflecting black (we see)2. Yellow Textbooks = reflecting yellow (we see) and absorbing ROGBIV3. Blue Chairs = reflecting blue (we see) and absorbing ROYGIV4. Green Plant = reflecting green (we see) and absorbing ROYBIV5. American Flag Red Stripes = reflecting red (we see) and absorbing OYGBIV

Light Behaves Differently

• Some materials scatter light; • Some materials refract (bend) the

light.

Write these notes!

Refracted Light: Introduction Video

• Discovery Ed video Refracted Light (1:44 minutes)

Refracted Light - Notes

• colors of the visible spectrum travel at their own unique speed.

• Light travels slower through water and glass than it does through air

Write these notes!

4th Block: Refracted Light - Notes

• White light through a glass prism =light refracted (or bent) and separated into the visible spectrum (ROYGBIV).

• Colors refract (bend) at different angles because each color travels at different speeds.

• Violet is bent the most and red is bent the least

Write these notes!

Refracted Light - Notes

• White light through a prism = all seven colors refracted

• The refracted spectrum can be bent again, with a second prism = back to white light!

Write these notes!

In Interactive Notebooks…

• In your Table of Contents, add a new entry:

“Parts of the Eye : Notes”

Number the entry

Go to this page inside your notebook and title the page “Parts of the Eye: Notes” and number the page

The Human Eye

• Discovery Ed video “The Human Eye” (2:17 minutes)

The Human Eye: Parts

• The Human Eye:• Cornea• Pupil• Lens• Retina• Optic Nerve• Brain

Your EYE!

• If you reach up and feel around your eye, you’ll feel the bone of your skull.

• There’s fat surrounding your eyeball to keep it from bumping up against the bone and getting bruised.

• In the cow’s eye dissection, we cut away all the fat and muscle so that we can see the eyeball.

Visible parts of the human eye• Pupil- the dark center• Iris- the colored part (blue, green, brown,

hazel)• Scalera- white part

Cow Eye Video Dissection

• Humans = 6 muscles controlling our eyeball (can look in different directions without moving our heads)

• Cows = 4 muscles controlling their eyeball (they can’t roll their eyes like you can)

• So cows have to turn their heads to look around!

Cow Eye Dissection Video

• If the video makes you uncomfortable, please simply put your head down on your desk.

• While we are watching, please act as scientists.

• This means, do not scream and shout, simply put your head down if something makes you uncomfortable.

• http://www.exploratorium.edu/learning_studio/cow_eye/step01.html

Parts of the Eye Activity

• Glue this handout into your notebook• Circle the really important ones and number

them• #1 Cornea• #2 Pupil & Iris• #3 Lens• #4 Retina• #5 Optic Nerve

Graphic Organizer

• Draw a graphic organizer that looks like this in your notebook:

• Follow along as we list the order in which light passes into your eye

Cornea

Pupil-Iris

Lens

Retina

Optical Nerve

Brain

Light