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Vocabulary
The Human Ear
Echo, Echo, Echo
How Sound Travels
More Vocabulary
100
This is the amount of energy reaching your ears.
What is loudness?
100
Vibrations that you can hear.
What is sound?
100
These animals use echoes to find food and avoid danger.
What is a dolphin?
100
Sound can travel through these three substances.
What is liquid, solid and gas?
100
This is a sound reflection?
What is an echo?
200
Quickly moving areas of high and low pressure.
What is a sound wave?
200
The outer ear, the middle ear and the inner ear.
What are the three main part of the human ear?
200
This is a sound reflection.
What is an echo?
200
The speed at which sound travels.
What is the speed of sound?
200
An area where air is pushed together.
What is compression?
300
These are back and forth movements of matter or particles of matter.
What are vibrations?
300
This part of the ear passes vibrations through three tiny bones.
What is the middle ear?
300
Sound waves reflect _________ from a smooth, flat surface.
What is straight?
300
Sound waves travel most quickly through this substance.
What is a solid?
300
A shock wave produced by an object traveling faster than the speed of sound.
What is a sonic boom?
400
This means to bounce back.
What is reflect?
400
This part of the ear collects sounds and guides them to the ear drum.
What is the outer ear?
400
When sound waves hit a __________ surface, they are relected in many different directions.
What is rough, uneven?
400
If you scream here, no one will hear you.
What is space?
400
The distance from one sound wave to the next.
What is wave length?
500
A measure of how high or low a sound is.
What is pitch?
500
This part of the ear vibrates cochlea and hairs that send messages along nerves to the brain.
What is the inner ear?
500
This organ on a dolphin senses the echo of the clicks and tells them what is ahead?
What is a melon?
500
Sounds move more quickly through this substance than in gas.
What is a liquid?
500
This is shown by height on a wave diagram.
What is amplitude?