Science Flash Cards (Sound and Pressure)

These flashcards help revise parts of the ear, pressure and sound waves.

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  • Created by: alfi3.d._
  • Created on: 05-02-18 20:39
How do you calculate pressure?
Pressure (N/cm² or N/m²) = Force (N) ÷ Area (cm² or m²)
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What type of wave is sound?
Longitudinal
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What can be used to show what a longitudinal wave looks like?
A slinky
3 of 20
What is the amplitude of a wave?
The height of the wave from its resting position (loudness)
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What is the wavelength of a wave?
How long the wave is from one peak to the next
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What are the three ossicle bones called?
The Stirrup, the Hammer and the Anvil
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What is the function of the pinna?
It funnels/directs sound into the ear canal
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What does the eardrum do?
Vibrations in the air make the eardrum vibrate, which are then passed onto the ossicles.
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What are the function of the ossicles?
The ossicles help to amplify the vibrations and sends them to the cochlea
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What is the function of the cochlea?
The cochlea contains a liquid that the vibrations pass through, creating small waves that pass over small groups of hair. These groups of hair (called stereo cilia) pick up different parts of the sound- transmitting them into electrical signals
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What is the function of the auditory nerve?
The auditory nerve (or cochlea nerve) helps to send the electrical signals created in the Cochlea, to the brain
11 of 20
Give an example of a shoe that puts a high pressure on the floor.
A high heel
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To decrease pressure, which would be more effective: Standing on one leg, or, lying on the floor?
Lying on the floor
13 of 20
Free divers travel to the some of the deepest depths of the ocean. Explain how/why their lungs are crushed to the size of a fist.
The pressure is so high under the immense weight of the water above, therefore becoming capable of crushing a person that has gone so deep underwater
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Which has a higher pressure, when the same amount of force is applied: A drawing pin, or, a fist?
A drawing pin
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Which will have the lowest pressure when an equal force is applied: A pair of skis, or, a person lying flat on the ground.
A person lying flat on the ground, because the surface area is greater.
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How do you calculate area?
Area = Force ÷ Pressure
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How do you calculate force?
Force = Pressure x Area
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What is upthrust?
Upthrust (or buoyancy) is an upward force exerted by a fluid that opposes the weight of an immersed object
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What is a fluid: A gas, a liquid, or both?
A fluid can be a gas or a liquid because they both flow
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Other cards in this set

Card 2

Front

What type of wave is sound?

Back

Longitudinal

Card 3

Front

What can be used to show what a longitudinal wave looks like?

Back

Preview of the front of card 3

Card 4

Front

What is the amplitude of a wave?

Back

Preview of the front of card 4

Card 5

Front

What is the wavelength of a wave?

Back

Preview of the front of card 5
View more cards

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