Topic 10 Sound Energy Flashcards

1
Q

Vibrations

A

Back and forth movements repeated fast

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2
Q

Compression

A

The process where a material is being pushed in to itself

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3
Q

Rarefractions

A

In sound waves, the layers of air particles that are spread apart (between compressions)

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4
Q

Sound waves

A

Vibrations of particles in the air

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5
Q

Hertz

A

Unit of frequency it’s abbreviation is Hz. One hertz is equal to one vibration every second

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6
Q

Pitch

A

The home ghmess or lowness of a sound. The pitch that you hear depends on the frequency of the vibrating air

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7
Q

Frequency

A

Number of vibrations in one second, or the number of wavelengths passing in one second

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8
Q

Wavelength

A

Distance between two neighbouring crests or troughs of a wave. This is the distance between two particles vibrating in step

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9
Q

Amplitude

A

Maximum distance that a particle moves away from its undisturbed position

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10
Q

Reverberation

A

Longer-lasting sound caused by repeated reflection from hard surfaces

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