Wave relationships
What happens to the frequency when the wavelength of a wave increases?
The frequency decreases
What does amplitude measure in a mechanical wave?
The maximum displacement from the rest line
Do electromagnetics need a medium?
No
reflection
does sound travel faster in water or air?
water
What is the relationship between frequency and energy in electromagnetic waves?
Higher frequency means higher energy
It increases energy
Mechanical
whats it called when a wave changes speed and bends while passing through a new medium?
refraction
does light travel faster in a vacuum or glass?
vacuum
If an electromagnetic wave has a short wavelength, what can you infer about their energy and frequency?
Both are high
If two waves have the same frequency and wavelength byt different amplitudes, which carries more energy?
The wave with greater amplitude
Is visible light a Mechanical wave or an Electromagnetic wave?
Electromagnetic
what is it called when two waves overlap and combine?
interference
why does sound waves travel faster in solids than gases?
What equation relates speed, frequency, and wavelength of a wave?
speed = frequency x wavelength
True or False: The amplitude of sound waves determines loudness
True
What can electromagnetic waves travel through that mechanical waves cant?
A vacuum
whats it called when the waves bend around or through obstacles?
diffraction
what happens to light when it slows down in a denser medium?
it refracts toward the normal
Why are gamma rays more dangerous than radio waves?
They have a much higher frequency and energy
Why do louder sounds require more energy than quieter ones?
Because louder sounds have higher amplitudes, which means more energy
why can radio waves travel through space but sound cant?
Because radio waves are electromagnetic and don't need a medium
whats the difference between constructive and destructive interference?
constructive adds wave amplitudes while destructive reduces/cancels them
why does a pencil look bent in a cup of water?