Electromagnetic Spectrum
What is the first wave listed on the EM spectrum with the longest wavelength and lowest frequency?
Radio Waves
Light waves travel in ________ lines.
Straight
As frequency increases, what happens to wavelength?
Wavelength decreases (they have an inverse/opposite relationship)
What does light do when it hits a black opaque surface?
All light is absorbed
ROY G BIV: Red, Orange, Yellow, Green, Blue, Indigo, Violet
What is the main use for gamma rays?
Cancer treatment
Light waves are what type of wave?
Electromagnetic waves (transverse waves that do not require a medium)
What type of material transmits all light that hits it?
Transparent
What happens to white light when it moves through a prism?
What part of visible light has the shortest wavelength and highest frequency?
Violet
How is the EM spectrum organized/arranged?
By increasing frequency and decreasing wavelength
What is the name for the diagram that shows the entire range of light waves in the universe?
Electromagnetic (EM) Spectrum
What type of EM wave is found on the EM spectrum between visible light and x-ray waves?
Ultraviolet light
What happens to light when it hits a translucent material?
When all parts of visible light are combined, they create what color light?
White light
What are the two main uses for microwaves?
Cooking and radar (speed checking done by police officers)
Why is an apple red?
What is an example of an opaque material that reflects light?
Metal; a mirror
What does light do when it hits a convex lens? Give an example of a tool that uses this type of lens.
Light refracts/bends towards a central focal point; Magnifying glass
What type of matter does light travel through the fastest?
Air
List the entire EM spectrum in order starting with the wave with the longest wavelength.
Radio waves, microwaves, infrared waves, visible light, ultraviolet, x-rays, gamma rays
What color material reflects all colors of light?
White
What is an example of something that produces its own light?
Sun, flashlight, fire, candle
What does light do when it hits a concave lens? Give an example.
Light refracts/bends away from a central focal point; Flashlight
List the parts of visible light by decreasing frequency.
Violet, Indigo, Blue, Green, Yellow, Orange, Red