# Properties of Waves - PowerPoint PPT Presentation

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Properties of Waves. Pgs 10 - 13. Amplitude. The property of a wave that is related to the height of a wave is amplitude. The maximum distance the wave vibrates from rest position. The rest position is where the particles stay when there are no disturbances. . Amplitude and Energy.

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Properties of Waves

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## Properties of Waves

Pgs 10 - 13

### Amplitude

• The property of a wave that is related to the height of a wave is amplitude.

• The maximum distance the wave vibrates from rest position.

• The rest position is where the particles stay when there are no disturbances.

### Amplitude and Energy

• Larger amplitude means more energy is used to make that wave.

• A smaller amplitude means less energy is used to make that wave.

• Amplitude can be a measure of energy in a wave.

### Wavelength

• The distance between any two adjacent crests or compressions in a series of waves is the wavelength.

• The wavelength can be measured from troughs and rarefactions as well.

### Frequency

• The number of waves produced in a given amount of time is frequency.

• You can count the number of crests/troughs/compressions/rarefactions that occur.

• Frequency is expressed in Hertz (Hz).

• 1 Hz = 1 wave /second.

### Frequency and Energy

• The higher the frequency a wave has, the more energy the wave is carrying.

• Also, the wavelength is closely related to frequency.

• Therefore, the shorter the wavelength a wave has, the more energy it is carrying and vice versa.

### Wave Speed

• The speed at which a wave travels is wave speed.

• This is the distance traveled divided by the time it takes to travel.

• Sound in air travels at 340m/s .

• Sound in steel travels 5200m/s.

### Calculating Wave Speed

• Wave speed is calculated by using wavelength and frequency.

• Speed is symbolized with a (v)

• Wavelength is symbolized with a (λ)

• Frequency is symbolized with a (f)

• V = λ x f

• What is the wave speed of a wave that has a wavelength of .5 m and frequency of 3 Hz?