Download - Light
LIGHTREFLECTION, REFRACTION, AND ABSORPTION
The way light waves bounce and bend show details of objects around us
REFLECTION Bouncing waves Like a ball bounces back
REFRACTION bending waves Do NOT bounce back Helps us see Makes the rainbow
Not all waves bend or bounce, some stick
ABSORPTION
Light waves that get taken up or absorbed
Opaque objects you can not see through, like wood or wool, can absorb light waves
Absorption helps us see color
3 kinds of Mirrors reflect light waves
I. PLANEI. Flat mirrors in our
bathroomII. Reflection is the same size
II. CONVEXI. Not the same sizeII. View is wider—you can
see moreIII. The mirrors on our cars
III. CONCAVEI. Curved like a spoonII. Can look upside-down,
right-side up, smaller or bigger
III. Like a funhouse mirror
Telescopes use mirrors to see far distances
Telescopes
Reflect or refract light
Use plane and concave mirrors
The bigger and more mirrors the larger the image the further away to
see
Why do things look different in the water?
REFRACTION—bending light
Light travels through air very fast—faster than water
Light travels through water faster than through glass
As light goes through material it slows down and bends
In order to see, our eyes need to use refraction
Our eyes focuses light to form and see objects
Light enters in a straight line
The lens bends the light rays and focuses in the retina to make images
Light is made of many colors—I can only see the visible
spectrum. White light is made up of
the colors of the rainbow.
Red bends the least
Violet bends the most
In order: red, orange, yellow, green, blue, indigo, violet
Other colors we see come from mixing the visible spectrum colors
The ABSORPTION of light is very important to how we see things.
Objects with colors absorb some light and reflect others
The color of light the object reflects is the color we see
In summary, I have learned
Light can be reflected (like in mirrors),
Convex—made bigger Concave—changes size ,
shape or direction refracted (by water)
Makes it look like it doesn’t match up
absorbed (by objects) Other colors taken in,
color I see is reflected
I can see only the visible spectrum of colors from the rainbow—ROY G BIV
My eyes’ lenses use the refraction of light to see
Light travels slower through objects than air
Light travels very fast
Telescopes use plane and concave mirrors to see things far away
Light is like up and down waves
Manipulating Light by Darlene Stille
Reflection—I see
Refraction—it bends
Absorption—goes into
By Darlene Stille