Definitions
The Eye and Lenses
Visible Light
Electromagnetic Waves
Photosynthesis and misc
100
Name an illuminated object:
What is a mirror, earth, sheet of paper
100
What is the purpose of the cornea?
It is a clear layer that protects the eye
100
In what medium do light waves travel faster?
a vacuum
100
The spectrum of radio waves to gamma rays is called the?
the Electromagnetic Spectrum
100
In photosynthesis, electromagnetic energy is converted into?
What is chemical energy?
200
Give an example of a luminous object:
What is a flashlight, light bulb or candle
200
What controls the amount of light that enters the eye?
What is the IRIS
200
The color of light is determined by its?
length of wave or wavelength
200
Describe GAMMA Rays
waves with the shortest wavelength and highest frequency
200
What do plants need to make food?
water, sunlight and carbon dioxide
300
Give an example of an opaque object:
What is white glass, cardboard box, etc
300
A lens that curves inward is?
What is a concave lens?
300
Name the color that the visible light spectrum DOES NOT contain
some colors it does not contain - for example - pink, white, black or purple CONTAINS - red, orange, yellow, green, blue, indigo and violet
300
If a beam of light strikes a mirror at 30*, the angle of reflection would be?
What is 30*
300
The process of a plant using the sunlight, water and carbon dioxide to convert to sugar is?
What is photosynthesis
400
Give an example of a translucent object:
what is stained glass, frosted glass, etc.
400
Describe a convex lens?
The lens curves outward
400
How does a wavelength of the color violet compare to the other colors?
Violet is the color with the SHORTEST wavelength
400
A small bundle of energy is called?
What is a PHOTON
400
Why do fiber optic cables reflect light better and why do the light pulses travel faster?
what is "Total Internal Reflection"
500
What is amplitude
What is the height of a wave?
500
Draw a concave lens
What is a lens that curves inward?
500
An object that absorbs all colors of light & does not reflect any appears?
What is BLACK
500
Name the properties of Electromagnetic Waves
made up of two transverse waves waves cannot travel through empty space have both electrical and magnetic properties
500
List properties of laser light?
One wavelength One color Waves travel in a straight line waves do NOT spread out
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