Vocab
The part of the electromagnetic spectrum we can see?
color
This is what we call the part of the electromagnetic spectrum that we can see
Visible Spectrum
What kind of wave is used to help see if your bones are broken?
X-Rays
This is often referred to as the absence of light.
black
These are the part of the eye that are responsible for perceiving color
cones
Why is an orange the color orange
It reflects the color orange
This is what our eyes use to perceive light
rods and cones
This is what you get if you mix too many pigments or dyes, causing them to absorb all of the colors and reflecting none of them?
Black
Name 3 non visible waves on the electromagnetic spectrum
radio waves, microwaves, infrared rays, and X-rays.
This is what we get when we overlap all three primary colors of light
white light
About how many times does the average person blink per minute?
15 times
What type of wave is a light wave?
Transverse
What term is used to determine the color of a wave?
frequency
What makes us see particular colors
cones
Light has the unique property that it can be described in physics as both a....
wave and particles
Which color has the shortest wave length?
violet/purple
These photo-receptors in our eyes are more receptive to light than cones.
rods
What muscle in the eye makes the pupil bigger and smaller?
iris
What is the most important wave-like behavior
reflection
This is the color of all of the combined colors of visible light
white light
What type of wave is used by weather radars and also helps heat food?
microwaves
What color is made when you mix red and green light?
yellow
What helps us have depth perception?
two eyes
What wave-like property of light causes it to change direction when it moves from one medium to another?
refraction
This is what happens to light when it is shined on a rough surface.
What is diffusion?
What two things happen to waves when light hits and object?
absorbs and reflects
This type of wave has the longest wavelength and is currently traveling through space welcoming other beings to our planet?
radio waves
Which color has the longest wave length?
red
This part of the eye contains the cones and rods that help us see light.
Retina
What will the iris do to the pupil if it is dark?
open it wide to accept more light?
What type of reflection results in a single ray of light being reflected?
specular reflection
What is the order of visible light from the longest wavelength to the shortest?
Daily double if all words are spelled right
red, orange, yellow, green, blue, indigo, violet
This type of waves can be seen by bumble bees, and it will give us a sunburn.
Ultraviolet waves
What two colors of light are needed to create the color cyan?
green and blue
What takes the signals from our eyes to our brain?
optic nerve
Why is the sky blue
because blue light is scattered more by air molecules than red light
This is why a straw seems to bend when you put it in water.
refraction
What is used to separate all the wavelengths of white light?
A prism
What do infrared waves and your TV have in common?
A remote uses infrared waves to work the TV
What name is used to help you remember the order of colors in the color spectrum?
ROY G. BIV
What does our brain have to do to an image we see with our eyes?
Flip it right side up
Why do our eyes hurt when lights are suddenly flipped on in a dark room?
Daily Double
Our pupils are big in the dark, and when the lights are turned on they take in too much light before the iris has time to close the pupil.
What light wave has the shortest wavelength and most energy?
Gamma Rays
Why does a smooth piece of paper not reflect light in a specular reflection?
The paper is not smooth at a microscopic level.
This type of wave will help kill cancer
daily double
gamma waves
What are the primary colors of light?
red, green and blue
What happens to a person when the lens and muscles can't quite focus the light just right?
Daily Double
They have to wear glasses or contacts
What are all 7 types of electromagnetic waves.
Daily double if you put them in order from shortest wavelength to longest wavelength.
gamma rays, x-rays, ultraviolet light, visible light, infrared, microwaves, radio waves