Definitions
Scenarios
Put on your listening ears
Differences in Sound
How sound travels
100
What is the part of a sound wave where air is pushed together?
compression
100
Who is the person that will hear the sound of the cars first at a racetrack? (picture example on board)
Closest person
100
What is the part of your ear that sends signals to the brain?
The inner ear
100
What does loudness measure?
the amount of sound energy reaching your ear
100
What is the way that dolphins use echos?
The make a clicking noise that is reflected back to them. This helps them find their way around objects and to locate food.
200
What is an echo
A sound reflection
200
Who is the person that will hear the sound of the cars last at a racetrack? (picture example on board)
The person most far away from the racetrack
200
What is part of you ear that is made up of three tiny bones?
The middle ear
200
What are sound waves?
A moving pattern of high and low pressure that you can hear. (BONUS)
200
What are the three forms of matter that sound can travel through?
1) Solid 2) Liquid 3) Gas
300
What is loudness
A measure of sound energy that reaches the ear
300
What is the reason why Suzy heard and ambulance before she saw it drive by?
Because the sound waves travel faster than the ambulance
300
What is pitch?
A measure of how high or low a sound is (BONUS)
300
What is the pitch of this sound? high or low? ( looks like small close together waves ))))))))
high
300
What is the way a sonic boom is formed?
Something has to be traveling faster than the speed of sound. It squeezes the sound waves moving ahead of it until they form a shock wave. When the shock wave reaches the ground, it is heard very loudly.
400
What is the Speed of Sound?
The rate or speed that a sound wave travels which is 340 meters per second or 1115 ft. per second
400
What would be a accurate drawing of what a sound wave would look like as it moves further away from its source?
X ))))) )) )) ) ) ) ) ) )
400
What is the function of the outer ear?
To collect sounds and guides the sounds to the eardrum
400
What are the two ways you can change the pitch of a vibrating object?
Change the length and the thickness of the vibrating object
400
What is the material that sound wave would travel the fastest in? A) cotton B) milk C) iron D) oxygen
C) iron
500
What is a sonic boom?
A shock wave of compressed sound waves by an object moving faster than the speed of sound.
500
What is the reason why Johnny hears different sounds as he blows across each tube filled with water? (picture example on board)
The amount of water in each tube is different which causes the change in sound (pitch).
500
What are some places you might be exposed to loud sounds that could harm your ear? Why is it harmful?
Factories, concerts, construction machinery, or ipod headphones turned up too loud are examples of this because there is too much sound energy that could damage your eardrum.
500
What does the pitch of a sound depend on?
How fast the object making the sound is vibrating.
500
What is an example of a sound with a high decibel?
jet airplane, tuba in your ear (something very loud)
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