Sound Travel
Sound travels in ____ directions.
Sound is made from _________.
Vibrations!
The outside of our ear that we can see is called the _____.
Pinna
If you were to stand far away from a source of sound, the sound would be ______.
Softer/quieter
Hearing loss can be caused by
Loud noises, age, natural, etc.
What can sound travel through?
Solids, liquids and gases
How could you explain a vibration?
When something moves back and forth very quickly.
The part of our ear that is like a drum is called the _______.
Ear drum
If we were to set up a water xylophone, how would I make a high pitch sound?
Barely fill the jar or only add a small amount
To protect ourselves from loud noises, we can
Wear protective equipment, reduce volume, avoid loud noises
Sound energy travels in _____.
Waves!
How do humans speak?
Using air from our lungs, our vocal cords vibrate back and forth. We create different types of sounds using our mouth and tongue.
There are three major parts of the ear. What are they?
Outer ear, middle ear, and inner ear
In my water xylophone, a jar that has more water will have a ______ pitch sound.
Low
Name an early invention that helped people with hearing loss to hear more effectively.
Ear trumpet
Sound is transmitted the best through what?
Solids
How do we hear sounds?
Vibrations travelling into our ear.
The part of our ear that looks like a snail shell is called the ______.
Cochlea
When sound bounces back after hitting an object, this means the sound has been _______.
Reflected
Who was Alexander Graham Bell?
The inventor of the telephone
Where is there no sound?
Space
If sound travels through materials, how could you stop a sound from travelling through a wire, such as in a Styrofoam cup telephone?
Pinch part of the wire/string
How does sound travel from outside our ear to our brain?
Absorbed
How do inventions impact our lives?
They make things easier