Does light travel at the same speed in a vacuum and a medium?
A humans voice causes _________ and ________ among particles in the air.
compressions and rarefactions
What are the three stages to sound comprehension?
1. gathering and amplification
2.conversion of waves into nerve impulses
3.decoding signals in the brain
how is pitch defined?
the highness or lowness of a sound
how is Intensity defined?
amount of energy in each wave
what is the relationship between intensity and amplitude?
increased intensity=increased amplitude
what unit do we use to measure Intensity?
human perception of sound intensity
explain the Doppler Effect
change in wave frequency dude yo a moving wave source
what is an example of the Doppler Effect?
~as a race car is coming towards you, the pitch gets louder and higher and as it moves away, it gets lower.
~Weather radar showing percipitation
light is composed of tiny particles called _______
what is the relationship between frequency and photon energy?
higher frequency = higher photon energy
what we are able to see depends on two factors. what are they?
1. amount of light
2. the color of the object
The speed of sound waves rely on two different factors, what are they?
medium in which it travels and the temperature of the medium
what are electromagnetic waves?
transverse waves with two parts- one magnetic and one electrical
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