KS3 Waves 13: The Human Ear and Sound Waves Quiz

What part of the ear is a thin flap of skin stretched tight like a drum?

• The cochlea

• The eardrum

• The pinna

• The auditory nerve

Which part of the ear carries signals to the brain?

• The pinna

• The auditory nerve

• The cochlea

• The eardrum

What is the highest frequency of sound that humans can hear?

• 10,000 Hz

• 40,000 Hz

• 20,000 Hz

• 30,000 Hz

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What is the function of the cochlea?

• To vibrate when sound waves hit it

• To carry signals to the brain

• To turn vibrations into an electrical signal

• To detect sound waves

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What is ultrasound?

• Sound waves that humans can hear

• Sound waves with a frequency higher than 20 kHz

• Sound waves that animals cannot hear

• Sound waves with a frequency lower than 20 kHz

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Which animals can hear ultrasound?

• Cats and dogs

• Dogs and bats

• Humans and dogs

• Birds and fish

What is a dog training whistle's frequency?

• 50,000 Hz

• 20,000 Hz

• 30,000 Hz

• 40,000 Hz

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What is one use of ultrasound in medicine?

• To measure blood pressure

• To break kidney stones

• To check eyesight

• To detect heartbeats

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How does an ultrasonic cleaner work?

• By using low-frequency sound waves to heat water

• By using low-frequency sound waves to create tiny bubbles

• By using high-frequency sound waves to create tiny bubbles

• By using high-frequency sound waves to heat water

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What is an ultrasound scan used for?

• To view the inside of the body

• To measure temperature

• To detect sound waves

• To clean delicate objects

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