Anatomy of the Ear
Frequency
Vocabulary
General Sound
Microorganisms Review
100
True or false:
The "pinna" works as a funnel for sounds and is a part of the inner ear.
False: It is a part of the outer ear
100
Does this sound wave indicate a high or a low frequency?
High Frequency
100
Rapid movement back and forth
Vibration
100
What is sound?
A type of energy caused by vibrations in the air
100
What is a microorganism?
A tiny living thing
200
What is the shell-shaped part of our inner ear that transforms sound vibrations into electrical signals
The cochlea
200
If a sound wave has a low frequency, will that create a low pitch or a high pitch noise?
A Low pitch
200
How loud or how quiet a sound is
Volume
200
True or False: Sound can travel underwater.
True
200
True or false: all microorganisms cause harm.
False: some are harmless!
300
Electrical Signals travel through this to reach our brain so that it can interpret the sounds we hear.
The auditory nerve
300
In order to create high frequency sound waves, the vibration must be _________
Fast
300
How low or how high a sound is
Pitch
300
Can you hear sound in space? Why or why not?
No, because there is no material for the sound to travel through
300
True or false: Yeast is a living thing
True
400
Many times, hearing worsens with age because these begin to die off.
Hair cells
400
Are low frequency sound waves squished together or spread apart?
Spread apart
400
The distance between two peaks of a wave. It's the term scientists use to describe how "squished together" or "spread apart" a wave is
Wavelength
400
If a glass is filled to the brim with water and you tap it with something metal, will it create a low pitch sound or a high pitch sound?
Low pitch
400
What are the best conditions for microorganisms (like salmonella) to grow?
A warm environment (like body temperature) with food for it to eat (like sugar)
500
What are the three tiny bones in our ear called?
The hammer, the anvil, and the stirrup
500
True or false: high frequency sound waves are taller than low frequency sound waves
False: the tallness of a sound wave refers to it's amplitude
500
A device that shows sound waves like a graph, in a sideways view
Oscilloscope
500
If all sounds are just vibrations, what is it that makes some sounds different from others?
Faster vibrations create more squished together wavelengths, which results in higher pitched sounds.
500
What are all the properties of living things?
1. Gets energy from food
2. Needs water
3. Made of cells
4. Grows and moves
5. Reproduces