Wave Properties. Amplitude The distance a wave vibrates from its rest position. The distance a wave vibrates from its rest position. The greater the amplitude,

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Presentation transcript:

Wave Properties

Amplitude The distance a wave vibrates from its rest position. The distance a wave vibrates from its rest position. The greater the amplitude, the greater the energy The greater the amplitude, the greater the energy

Wavelength The distance between one point on a wave and the corresponding point on the next wave. The distance between one point on a wave and the corresponding point on the next wave. The greater the wavelength the lower the frequency The greater the wavelength the lower the frequency

Frequency Frequency ( f ) Frequency ( f ) # of waves passing a point in 1 second # of waves passing a point in 1 second Depends on wave type and medium Depends on wave type and medium Unit = Hertz (Hz) Unit = Hertz (Hz)  shorter wavelength  higher frequency  higher energy 1 second

Wave Speed Velocity ( v ) or wave speed Velocity ( v ) or wave speed speed of a wave as it moves forward speed of a wave as it moves forward depends on wave type and medium depends on wave type and medium Expressed in m/s Expressed in m/s v = × f v:velocity (m/s) :wavelength (m) f:frequency (Hz)

WORK: v = × f v = (3.2 m)(0.60 Hz) v = 1.92 m/s D. Measuring Waves EX: Find the velocity of a wave in a wave pool if its wavelength is 3.2 m and its frequency is 0.60 Hz. EX: Find the velocity of a wave in a wave pool if its wavelength is 3.2 m and its frequency is 0.60 Hz. GIVEN: v = ? = 3.2 m f = 0.60 Hz v f

WORK: f = v ÷ f = (5000 m/s) ÷ (417 m) f = 12 Hz D. Measuring Waves EX: An earthquake produces a wave that has a wavelength of 417 m and travels at 5000 m/s. What is its frequency? EX: An earthquake produces a wave that has a wavelength of 417 m and travels at 5000 m/s. What is its frequency? GIVEN: = 417 m v = 5000 m/s f = ? v f

Frequency The number of wave produced in a given amount of time The number of wave produced in a given amount of time Expressed in Hertz (Hz) how many wave pass a point in a second Expressed in Hertz (Hz) how many wave pass a point in a second

Wave Speed The speed at which a wave travel. The speed at which a wave travel. Expressed in meters per second Expressed in meters per second Changes with a change in the medium Changes with a change in the medium