STUDY HALL
BLUE CARDS OUT
SITTING IN ASSIGNED SEATS
WORKING ON SOMETHING QUIETLY OR YOU
WILL LOSE POINTS
WRITTEN RESPONSE MAY 1
• Earlier this year we learned about the visible
spectrum of light. Describe what visible light
is and explain how we are able to see all the
colors of the spectrum
• Remember to brainstorm first then construct
your sentences.
WRITTEN RESPONSE MAY 1
• Earlier this year we learned about the
electromagnetic spectrum and one specific
region of the spectrum known as visible light.
Visible light is the light that we can see and is
made up of ROYGBIV. We learned that colors
can be both absorbed and reflected; the
colors we actually see are the colors being
reflected back to our eyes while all other
colors are being absorbed
ROY G. BIV
EOG REVIEW:
The Visible Light Spectrum
WORKSHEET…
• Today you will be completing a worksheet as
we review
• Begin now with the warm up on the
worksheet
• Warm Up – list the colors of the visible light
spectrum in correct order
“Seeing” Is believing..
• Something can be “seen” when light waves
are Emitted and Reflected when it enters the
eye.
Visible Light
• Human eyes can see only a narrow range of
wavelengths of electromagnetic waves
ROY G. BIV is apart of the Visible Light Spectrum
BrainPop Video
• Colors….
The Electromagnetic Spectrum
We can only see…..
VISIBLE LIGHT
The visible light from the sun = white light.
White light = combination of colors:
Red, Orange, Yellow, Green, Blue, Indigo, Violet.
This is always the order of the colors in white/visible light. We can
remember this order by memorizing this name:
ROYG. BIV
Light travels in
TRANSVERSE
WAVES
Add to Alphabet Book…
• Dispersion: The separation of visible light into
its different colors
• A Prism (example)
Did you know?
• Without light, we wouldn’t be able to see.
• It would be like living in a room with no
windows, doors, or lamps.
How it works…
• There’s an old saying, “We don’t see things;
we see light bouncing off of things.”
• We see things, and colors, when light bounces
off things and into our eyes.
How does COLOR work?
See an object that is a certain color = the light
waves of that color is being reflected
all other colors are being absorbed.
These lemons
are reflecting
the color
yellow. They
are absorbing
the colors red,
orange, blue,
green, indigo,
and violet.
The grass in
this photo is
reflecting the
color green. It
is absorbing
all the other
colors; such as
red, orange,
yellow, blue,
and violet.
Absorption
• Entire spectrum of light that an object is
taking in (all different colors of light)
Reflection
• The color that we can see.
• So when an object absorbs all the colors
except green, for example the grass, that
means that the object is REFLECTING green.
Examples of Light being Absorbed
• Find someone with an orange shirt.
– What colors are being reflected?
– What colors are being absorbed?
• Now find someone with a blue shirt.
– What colors are being reflected?
– What colors are being absorbed?
Your Turn – 3 Minutes
• I want you to SILENTLY find three objects in the
room from your seat. Do NOT get up.
• Write the name of the objects in your notes.
• Now list all the colors the object is absorbing.
• And now list all the colors the object is reflecting.
What is white light?
• White light is the combination of all the colors
blended together of the visible light spectrum
• When white light hits something white,
almost all of the light bounces into our eyes,
and we see the color white.
Meet the color BLACK
• Black = absorbing ALL of the colors.
• Black is merely the absence of the
wavelengths of the visible light spectrum.
White objects ______all the colors
of the rainbow.
Black objects __________ all
colors of the rainbow.
• Complete the following questions on your
piece of paper.
1. What colors are being absorbed?
2. What color is being reflected?
3. What color is being reflected?
4. What colors are being absorbed?
5. What color is being reflected?
Study hall
• Sitting in assigned seats
• Not wondering around the room
• Talking very quietly
WARM UP: Number your paper FROM 1 to 5. TRY TO GUESS
EACH PICTURE
The Answers:
Scattering Light
• the deflection or spreading out of light as it
passes through a different material
• Examples: Why we have sunsets and
sunrises that are orange and red (sometimes
pink).
• Headlights at night in fog
Video….
• Scattering “Why is sky blue”?
• https://www.youtube.com/watch?v=gUgDtW
ANJ18
Refracting Light
• Bending light
• Why does the straw look bent?
– Answer on worksheet
• Light is traveling at different speeds through
the air than the water
Colors with Bill Nye
http://www.youtube.com/watch?v=gtgBHsSzCP
E&feature=related
Time to Draw!
• You will be drawing the eye….
• Fold your paper in half first
• Will we labeling the most important parts
together
Cornea
Light
Pupil-Iris
Lens
Brain
Retina
Optical Nerve
When Light Enters the Eye….
• Cornea: covering over the iris and pupil; starts
bending light to make an image
• Pupil: dark circle in middle of eye; allows light in
• Iris : muscle that controls how much light enters
the eye
• Lens: allows eye to focus on near and far objects
• Retina: cells on back of eye that detects images
from the cornea and lens
• Optic Nerve: nerves that carry information to
the brain
Study Jams: Eye
• http://studyjams.scholastic.com/studyjams/ja
ms/science/human-body/seeing.htm
Sound is…
• Something "heard" when sound waves from it
enter the ear.
• These waves have different characteristics
such as frequency and amplitude, which will
determine the properties of sound such as
pitch and loudness.
Answer in complete sentences…
• Using these statements, how do we hear?
• The human ear receives sound waves as
vibrations
• The brain converts them to signals that are
processed as sound
• Membrane in the ear that vibrates and causes
you to hear.
Sound
• High energy vibrations make loud sounds.
• Low energy vibrations make soft (quiet)
sounds.
Sound and States of Matter
• Sounds can travel through all three states of
matter.
• In which state of matter does it travel the
fastest? (HINT: think of the atoms)
• Fastest in solid
• Slowest in gas
Add to alphabet book…..
• Sound : a form of energy that is caused when
vibrating materials produce waves that move
through matter.
Time to Draw the Human Ear
• The structure of the ear has many parts, which
affects how we hear things.
• On the back of your paper from your eye
drawing, draw the ear on one half
Diagram of the Ear
Structures of the Human Ear –
write these notes
• Outer Ear catches sound waves and funnels
them into the ear canal where they strike the
eardrum (middle ear)
• Eardrum is a thin, taut membrane which
vibrates as sound waves strike
• As the eardrum vibrates, it causes tiny bones
on the other side of the eardrum to vibrate
also.
Structures of the Human Ear –
write these notes
• Tiny bones: the hammer, the anvil, and the
stirrup amplify, or increase, sound.
• These bones are attached to the cochlea,
which is filled with a liquid that changes
vibrations to electrical messages
• These messages are sent through the auditory
nerve to the brain, which interprets the
sound.
Study Jams
• http://studyjams.scholastic.com/studyjams/ja
ms/science/human-body/hearing.htm
Discovery Education
• Vibration and Sound
Optical Illusions…
We will investigate conditions that impair vision
What do you see?
What do
A face and the word LIAR
What do
Is the left center circle bigger?
No, they're both the same size
It's a spiral, right?
No, these are a bunch of independent
circles
Keep staring at the black dot.
After a while
the gray haze around it will appear to
shrink.
Can you find the dog?
Stare at the black lightbulb for at least 30 seconds.
Then immediately stare at a white area on the screen
or at a sheet of paper. You should see a glowing light bulb!
How many colors do you see?
There are only 3 colors: White, green, and
pink.
There seem to be two different shades of
pink,
but there is only one pink.
Do you see a couple or a skull?
Count the black dots! :o)
Are the horizontal lines parallel or do they slope?
How many legs does this elephant have?
Do you see the three faces?
What does the sign say? Are you sure?
Do you see the face? Or an Eskimo?
Do you see a cube missing a corner?
Or do you see a small cube in a big one?
Is the blue on the inner left back or the outer left front?
Do you see a musician or a girl's face?
Do you see an old man's face or two lovers kissing?