Mechanical Waves
Parts of a Wave
DISTURBANCES!
"How Does it Sound?"
100
All mechanical waves require a ____________.
medium
100
The top points of a wave.
Crest
100
What is the disturbance creating this wave?
The rock hitting the water.
100
Which wave has a longer wavelength (red or blue) and why?
Red because the distance between the crests and troughs are greater than for the blue one.
200
Is light a mechanical wave? WHY or WHY NOT?
No, it can travel through emptiness (a vacuum).
200
What is the amplitude of this wave?
0.6 meters
200
What is the medium being disturbed in this image?
The water
200
If these were sound waves, which one would be louder (red or blue) and why?
Blue, because the amplitude is higher and amplitude determines the volume of a sound.
300
Give an example of a medium that waves can travel through that is solid.
Table, ground, tuning forks, etc.
[Teacher discretion]
300
What is the wavelength of this wave?
2 meters
300
What role did Penguino serve in the vacuum chamber demonstration?
The disturbance that started the sound wave
300
If these were sound waves, which one would be higher pitch (red or blue) and why?
The blue wave because the frequency is higher and frequency determines the pitch of a sound.
400
What is the scientific name for "earthquakes"
seismic waves
400
How many waves exist between points E and I?
0.75 waves
400
What is the medium through which seismic waves travel?
The ground/earth
400
If these were sound waves, which one would be quieter (red or blue) and why?
The red wave because it has lower amplitude and amplitude determines the volume of a sound.
500
List a wave other than light that is NOT mechanical
Gravitational waves
500
The trough of a compression wave can also be called the _____________ of the wave.
rarefaction
500
What is the disturbance that starts most seismic waves?
The sliding/shifting/grinding of tectonic plates
500
If these were sound waves, which one would be lower pitch (red or blue) and why?
The red wave because it has a lower frequency and frequency determines the pitch of a sound.