science wavessss
Terms
undefined, object
copy deck
- about how long does it take light from the sun to get to earth?
-
8 minutes
- Type of electromagnetic rays that can be sensed my humans
-
infrared rays
- one way we use ultraviolet
- to kill bacteria on food
- Why are microwaves good for heating food?
- microwaves heat food very quickly
- how are rainbows formed?
- different wavelengths of light are refracted by different amounts
- what type of light needs a filament to produce light?
- incandescent light
- these consist of changing electric & magnetic fields
- electromagnetic waves
- how do cellular phones work?
- they transmit signals by using high frequency radio waves
-
what do TV networks use to send tv signals across the country?
- communication satellites
- All electromagnetic waves travel at different
- frequencies
- an infrared camera takes a picture called?
- a thermogram
- Most of the energy produced by incandescent bulbs are called
- heat
- fireflies produce own light process is?
- Bioluminescence
- FM radio broadcasts. what stays the same?
- amplitude of the wave
- what type of waves does a radar use?
- microwaves
- object that gives off own light
- luminous
- light that contains a filament and gas
- tungsten halogen
- AM radio station broadcasts what stays the same?
- frequency
- polarized filters = turn
- 90 degrees
- what can we find out about light when we use polarized filters
- waves