Physics2 7L Sound Flashcards
What is sound caused by?
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Sound is caused by vibrations.
What does ‘pitch’ mean?
The word ‘pitch’ means how high or low the note is.
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Is a high pitch note a low frequency or a high frequency?
A high pitch note is a high frequency?
What is meant by the ‘frequency’ of a sound wave?
The ‘frequency’ of a sound wave means how frequently the vibrations happen.
High frequency = high pitch note.
It is literally the number of vibrations per second.
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Which of these bars on the xylophone would produce the lowest pitch note?
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The lowest pitch note is produced by the longest bar.
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What’s the word used to describe how loud a sound is?
The word used to describe how loud a sound is, is volume
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When sound travels through the air, what is it that’s vibrating?
When sound travels through the air, it is the air particles that are vibrating.
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Why will sound not travel through space?
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Sound will not travel through space because space is a vacuum and there is no air for the sound to travel through.
What unit is frequency measured in?
Frequency is measure in Hertz (Hz)
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Sound can travel through gases, liquids and solids.Which one does it travel fastest through?
Sound travels fastest through solids and slowest through gases.
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Why does sound travel fastest through solids?
Sound travels fastest through solids because the particles are closest together in solids, so the vibrations can get passed on quicker.
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Which part of the ear is labelled A?
A is the ear drum.
Which part of the ear is labelled B?
B is the cochlea.
What is part C of the ear made up from?
C is made up of tiny bones (the hammer, anvil and stirrup)
What is the function of part B?
Part B is the cochlea and its function is to change the vibarations into tiny electrical signals that get sent to your brain.