Front Flashcards
The unit for frequency is what?
Hertz
When you squeeze together the coils of a spring and then release them, you are creating what kind of wave?
Longitudinal
What is another word for compressional waves?
longitudinal wave
What type of waves are water waves?
surface waves
What are seismic waves?
Waves generated from an earthquake
You are creating a wave on a string. If you start shaking the string more slowly, what happens to the resulting wavelength?
The wavelength will increase
If you notice the number of waves that pass you increase, what is true about the distance between each crest?
The distance will decrease
How is the energy of a wave measured?
by amplitude
For a given wave, if the frequency doubles, what happens to the wavelength?
The wavelength will halve
When light is reflected from a surface, as the angle of incidence increases, what happens to the angle of reflection?
Increases by the same amount
You see shapes and color because light is being what?
Reflected
What happens when the crest of one wave passes through the trough of another wave?
Destructive interference occurs
A tuning fork begins to vibrate when a certain note is played. This is an example of what?
Resonance
If wavelength is constant, what increases as the speed of the wave increases?
Frequency increases
If the period of a certain wave with a wavelength of 4.5m is 2 seconds, what is the speed of the wave?
2.25 m/s
Tapping the surface of a pan of water generates 17.5 waves per second. If the wavelength of each wave is 0.45 m, what is the speed of the wave?
7.9 m/s
A place where molecules are far apart is called what?
Rarefaction
What is it called when light bounces off an object?
Reflection
What type of wave is a sound wave?
Longitudinal wave
Is the speed of sound greater in water or air?
In water
If the intensity of a sound decreases, what also will decrease?
Loudness
How does the brain interpret the intensity of sound?
As loudness
At what intensity of sound could permanent hearing loss occur?
80 dB
What unit is used to measure frequency?
Hertz
What must occur for the Doppler effect to work?
You or the object needs to be moving
