Light Basics
What is the main producer of radiant energy?
The sun.
What do we call crest to crest or trough to trough measurements on light waves?
Wavelengths.
The sum of ALL light waves is....
White light.
Light passes through very easily.
Transparent.
This is when light bounces off an object.
Reflection.
Radiant energy is the energy of ______.
Light.
What is the number of waves that pass a point over a given period of time?
Frequency.
What color shirt would I want to wear on a hot, summer day?
White.
Some light can pass through, but not all.
Translucent.
This is when light is bent as it passes through an object.
Refraction.
The type of energy we can see is called __________.
Visible Light.
The color of light we see is determined by its....
Wavelength or Frequency.
This color would keep me the warmest on a cold day.
Black.
No light can pass through at all.
Opaque.
This triangular, clear wedge disperses white light into all the individual colors.
A prism.
True or False:
You can see all radiant energy.
False!
This color has the longest wavelength and shortest frequency.
Red.
What process do plants use to turn radiant energy into food?
Photosynthesis.
List 3 examples of transparent materials.
clear glass, clear plastic wrap, window, water, air, etc.
What happens to the light as it travels through a prism?
It refracts or bends and we see all the colors of the visible spectrum.
Light travels in __________ waves.
Transverse.
This color has the shortest wavelength and highest frequency.
Violet.
List the colors of the visible spectrum in order from the longest to shortest wavelength.
Red, Orange, Yellow, Green, Blue, Violet
List 3 examples of opaque materials.
metal, wood, bricks, desk, aluminum foil, etc.
Give an example of a prism in nature.
Raindrops.