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what type of waves are sound waves?

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what range of frequencies can humans hear?

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How do you hear?

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the cochlea turns these vibrations into electrical signals which get sent to the brain
the vibrations travel through the semi-circular canals and to the cochlea
sound waves reach your ear drum and cause it to vibrate
these vibrations are passed onto the ossicles (the tiny bones)

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fill in the blanks

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human hearing is limited by the size and shape of our____________

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as well as the ______________ of the parts within an ear

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fill in the blanks about ultrasound

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ultrasound is sound waves above __________ Hz

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a pulse of ultrasound takes 4.5 seconds to travel from a submarine to the seabed and back again. if the speed of sound in water is 1520 m/s, how far away is the submarine from the sea bed?

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what can cause seismic waves?

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match the seismic waves

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p - waves
s - waves

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can't travel through the earth's core
can travel through the earth's core

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