Electromagnetic spectrum and light test
Terms in this set (26)
electromagnetic spectrum from highest frequency to lowest frequency
gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, radio waves
gamma ray uses
PET scans, CAT scans, sterilizing equipment, kill bacteria, found in the sun
airport security, dentist, X-rays, chemotherapy
tanning beds, counterfeit money detector, black lights, sterilizing equipment
visible light uses
CD's, DVD's, Laser printers
TV remote, night sights, security cameras
cooking, radar used to predict the weather, speed cameras, mobile phones
Radio Waves uses
communication, police radio, am/fm radios, tv transmissions, military aircraft radio
What are the two bands of rays on either side of the visible spectrum.
Ultraviolet and infrared
material that allows all light to pass through.
example: clear glass, clear plastic
material which allows light to pass through, but it scatters that light... not a detailed image.
example: wax paper
material that light doesn't pass through at all (but color is reflected)
material absorbs some light, but allow some to pass through. Example: sunglasses, colored glass
light bounces back at the very same angle
White light is...
a combination of all the colors. When it bends and refracts you see what ever color is reflected.
what is ROYGBIV?
red, orange, yellow, green, blue, indigo, violet
high frequency waves
have a shorter wave length and are more harmful
low frequency waves
have a longer wave length and are the less harmful
light that bounces back at the same angle
the bending of light caused by a change in speed when it passes from one medium to another.
The angle of incidence
equals the angle of reflections
Why is an apple red?
The apple absorbs all the other colors (OYGBIV) except red. The red is reflected.
The Electromagnetic Spectrum
is a range of waves around us
The small part of the spectrum that we can see
The distance between waves.
How often the waves occur