Light
Our Eyes
Lenses
Color
Mixing Color
100
Which of these can’t be seen in the dark: a candle flame, a lit flashlight, a mirror, a glow stick
A mirror
100
What inside our eyes focuses the incoming light?
The Lens
100
How is a pinhole like a lens?
It can project an image on a screen.
100
What color(s) of light does a blue object reflect?
Blue
100
What are the three primary colors of light.
Red, Green, Blue
200
Light always travels in straight lines. True or False?
True
200
What are the names of the two kinds of light receptor cells?
Rods and Cones
200
What is the orientation of the image made by a pinhole on a screen
Upside down or inverted
200
What color(s) of light does a yellow object reflect?
Red and Green
200
Know the three secondary colors of light.
Yellow, Magenta, and Cyan
300
In order for us to see an object what must be true?
It must be giving off or reflecting light.
300
Which of the cells in our retina see color?
The cone cells
300
How many locations can you make a clear image on a screen using a convex lens?
Two
300
Why does a red object look red?
It reflects red light (and absorbs the other colors)
300
What two colors can you mix to make cyan?
Blue and Green
400
The bending of light rays when they enter a different medium is called
Refraction
400
What is the function of the sclera?
Protection
400
What shape of lens causes light rays to diverge (move apart)?
Concave
400
Why does a red apple look black through a blue filter?
The red apple is reflecting red light which can't pass through the blue filter
400
What two colors can you mix to make magenta?
Red and Blue
500
What are the two conditions that must be present for light to be refracted?
The light ray must enter a different medium and it must enter it at an angle other than 90˚
500
What is the function of the vitreous humor?
To keep the eyeball's shape.
500
Which lens will magnify an object?
Convex
500
A green leaf absorbs ______ light and reflects ________ light.
absorbs red (and blue) light and reflects green light
500
What color of light do you get when you mix blue light with magenta light?
Magenta
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