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Vocab
Types
Properties of Waves
Calculations
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100
What is Amplitude?
A motion is its maximum displacement from equilibrium.
100

What are the 2 types of waves?

Transverse and longitudinal. 

100

What does the frequency of a wave depend on ?

The vibrating source of the wave. 

100

A pendulum swings to and fro 8 times in 10 seconds. What is the frequency AND period ?

f = 0.8Hz

T = 1.25s

100

What is a bow wave?

Wave pattern produced from a source moving faster than the wave speed

200
number of waves that pass a given point per second
what is Frequency
200
What are Standing Waves?
a stationary wave, Is a wave in a medium in which each point on the axis of the wave has an associated constant amplitude.
200
What are the Properties of Waves ?
Amplitude, Wavelength, Period, Frequency and Speed.
200

A buoy in the ocean goes up and down 40 times in 1 minute.  If the distance between peaks is 9m, calculate the speed of the waves.  

6m/s

200

What types of frequencies are higher than humans can detect

ultrasonic

300

What causes a standing wave

A wave reflecting on itself
300

Describe the disturbance of a Transverse wave

The displacement of the medium is perpendicular to the propagation of the wave.

300
What is the Formula for Wavelength?
wavelength = speed / frequency
300

The fundamental frequency of a string is 300Hz, what is the 3rd harmonic?

900Hz

300

What do you call a wiggle in time

A vibration

400

What do you use to refer to speeds faster than the speed of sound?

Supersonic

400

What moves from place to place in a wave ?

Energy

400
What are the four characteristics of waves
Amplitude: the height of the wave, measured in meters. Wavelength: the distance between adjacent crests, measured in meters. Period: the time it takes for one complete wave to pass a given point, measured in seconds. Frequency: the number of complete waves that pass a point in one second, measured in inverse seconds, or Hertz.
400

If normal conversation is 40dB,  how loud would a cafeteria with 100 conversations be?

60dB

400

What term refers to the material a wave travels through

Medium

500

What describes the apparent change in the frequency of a wave due to relative motion between the source and the observer?

The Doppler Effect?

500

How does a longitudinal wave behave ?

The motion of the individual particles of the medium is in a direction that is parallel to the direction of energy transport.

500

What does the speed of a wave depend on?

The properties of the material it passes through

500

Calculate the 3rd harmonic frequency for an open pipe 40cm long.  Assume the speed of sound is 340m/s. 

1275Hz

500

What unit do we use to measure the "loudness" of a sound

Decibels