Physics P1 5.7 Musical sounds.

When does the pitch of a note increase?

If the frequency of the sound waves increases.

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What does the loudness of a note depend on?

The amplitude of the sound waves.

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What do the vibrations created in an instrument produce when it is played?

Sound waves.

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The higher the frequency of sound waves the higher...?

The pitch of a note.

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What does the loudness of a sound depends on?

The amplitude of the sound waves.

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The greater the amplitude the more...?

Energy the wave carries and the louder the sound.

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What do tuning forks and signal generators produce?

'Pure' waveforms.

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What does the quality of a note depend on?

The waveform.

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Why do different instruments sound different from each other?

Different instruments produce different waveforms.

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What produces sound waves when an instrument is played?

Vibrations created in the instrument.

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What are the different ways in which vibrations in an instrument create sound waves?

In some instruments, such as a saxophone, a column of air vibrates; in others, such as violin, a string vibrates; in others, such as a xylophone, instruments vibrate when they are struck.

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What happens to the pitch of a note as the frequency decreases?

The pitch decreases.

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Why do different instruments sound different when they play the same note?

The waveforms are different.

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**PRACTICE SKETCHING WAVEFORMS, E.G. A WAVE WITH TWICE THE FREQUENCY AND HALF THE AMPLITUDE OF THE ORIGINAL**

**LOOK UP SKETCHES OF WAVEFORMS AND DIFFERENT SOUNDS***

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Physics P1 5.7 Musical sounds.

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