Sound Travels
Human Ear
Vocabulary
Decibels
Hodgepodge
100
Sound travels in ________?
What is Waves
100
How many bones are there in the human ear?
What are three bones
100
The loundness and softness of sound is called?
What is Volume
100
What is the normal decibel level for conversation?
What is 60-65 decibels
100
Hearing loss only happens when you are old?(True or false)
What is False.
200
All sounds are created by these
What are vibrations
200
Where are the smallest bones in the human body?
What is the ear
200
Two words that describe pitch are?
What is High and Low
200
Hearing damage can occur above this decibel level.
What is 85 decibels
200
Your ears help you keep your balance. (True or False)
What is True. The semi-circular canals keep your balance.
300
Sound travels through solids, ________ and ____________.
What are Liquids and Gases
300
What is the part of the human ear that first collects the sound waves called?
What is The Pinna. The pinna first collects the sound in the human ear.
300
Sound vibrations are measured in ____?
What are Hertz.
300
The volume of race cars, jet engines and explosions cause?
What is immediate hearing damage
300
All sounds cause hearing loss. (True or False)
What is False. Sounds less than 85 dB are safe, and not damaging for your ears.
400
Sound is heard the quietest through what material?
What is Air
400
What carries the message from the ear to the brain?
What is The Auditory Nerve. The Auditory Nerve carries the message from the ear to the brain.
400
The loudness and softness (volume) of sounds are measured in ______.
What are deicbels, or dB.
400
A hearing loss makes sound and noises become ___________.
What is softer or harder to hear.
400
Can you hear sounds if you have a torn eardrum?
No, the ear drum creates vibrations that travel to your brain as electrical sounds.
500
Sound is heard the loudest through what material?
What is Solids
500
Where are the hair cells located which help sound travel through the ear?
The hair cells are located in the inner ear.
500
How fast or slow a sound vibrates is called _______.
What is Frequency
500
What are three ways to protect your hearing from loud noises?
What are moving away from the sound, wearing hearing protection, or reducing/turning down the volume.
500
Can you hear sounds in outer space?
No, because you need air for sound waves to travel (No matter how the movies- like Star Wars show it. Space is a vaccum which prevents sound waves.
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