Parts of a wave
What are the highest points of a wave called?
crest
Waves move matter or energy?
Energy
What is an example of a longitudinal wave?
Sound waves, seismic p-waves
Do electromagnetic waves need a medium to travel through?
No, they travel through empty space.
Do sound waves need a medium to travel through?
yes
What is the lowest point of a wave?
Trough
What is a medium?
Solids, liquids, and gases that waves travel through.
What is the packed tightly together part of a longitudinal wave called?
a compression
What two types of fields create an electromagnetic wave?
Electric and magnetic
Describe how the pitch of a sound is related to its frequency.
Higher frequency results in higher pitch.
The middle, resting point of the wave to the top of the wave.
amplitude
How do the particles of transverse waves travel?
perpendicular to the direction of wave travel
How do the particles of a longitudinal wave travel?
parallel to the direction of wave travel
What type of EM wave has the most energy?
Gamma
What medium do sound waves require to travel?
solids, liquids, and gases
From one part of a wave to the same part on the next wave.
wavelength
What are examples of transverse waves?
a water wave, an electromagnetic wave, a guitar string
What is the pulled apart part of a longitudinal wave called?
A rarefaction
What are the waves of visible light from least to most energy?
Red- orange -yellow - green - blue - indigo - violet
What is the doppler effect?
the change in the frequency of a wave in relation to an observer who is moving relative to the source of the wave.
Increasing these two increases the energy in a wave
amplitude and frequency
When the wavelength is longer the frequency is _________ and the energy is ______________.
less, less
What type of medium do they travel through?
Solids, liquids, and gases
How fast does an EM wave travel?
The speed of light, 300,000,000 m/s (three hundred million meters/sec)
What type of medium do sound waves travel the fastest through?
Solids