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