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YEAR 8 - Physics > Sound > Flashcards

Sound Flashcards

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0
Q

What are compressions and rarefaction?

A

COMPRESSIONS: When the sound waves squash together.
RAREFACTIONS: When the waves move apart.

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1
Q

How does sound travel?

A

Sound travels by AIR PARTICLES colliding with each other and passing the SOUND ENERGY on by causing the particles to VIBRATE MORE (they are ALREADY moving).

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2
Q

What is amplitude and frequency?

A

AMPLITUDE: The height of the peak or trough part of the wave. The bigger the height, the louder the sound.
FREQUENCY: The number of waves passing a point every second. The bigger the number, the higher the pitch of the sound.

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3
Q

What is the speed of sound?

A

330m per second.

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YEAR 8 - Physics (3 decks)

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