vocab
the force or physical power that living things need
energy
how do both light and sound travel?
waves
when can you see a rainbow?
When the rain stops
who invented the telephone?
Alexander Graham Bell
to brighten
illuminate
adjective vs. adverb
describes a noun
describes a verb (-ly)
what is white light?
all the colors of the rainbow
what part of the body vibrates to create sound?
vocal cords
when a material blocks all light from passing through
who invented the light bulb?
Thomas Alva Edison
what are two sources of white light?
sun & light bulb
sounds with greater__________travel farther are louder
intenstity
rounded outward
example: contact lens
convex
Same: waves, energy
Differences: see light not sound, sound needs a medium to travel through, light can travel through a vacuum like space, sound is caused by vibrations
two things needed to create sound
vibration, sound waves carry vibrations through a medium
a substance or material
medium
What is the difference between intensity and frequency?
Intensity is the power per wave (loudness/brightness)
Frequency is how fast a wave is (pitch/color)
What are the colors of the spectrum?
ROY G BIV
what causes high pitch vs. low pitch
short, quicker waves create high pitch
slow, longer waves create low pitch