Sound & Light Flashcards
Another word for vibrations
Oscillations
Can sound travel through space if not why
No because there are no particles in space n
How does sound travel
The oscillations bounce of particles in the air
Does sound travel quicker in liquid, gas, solid & why
Solids because the particles are closer together
Does low amplitude have less or more energy
Less energy
What does amplitude depend on
The energy in the vibrations
Frequency definition
Number of waves which go past a particular point per second
What is frequency measured in
Hertz
1 Hz =
1 sound wave per second
What is the pinnas job in the ear
collects sound waves and channels them into the ear canal
What do the ear bones do
Makes sound louder
What does the ear canal do
an entryway for sound waves,
What is a cochlea
participates in the process of auditory transduction
What’s an ear drum
that separates your outer ear from your middle ear.
Explain why damage to the eardrum can result in hearing loss
The vibrations can’t go through to the brain
Light is a form of …….
Energy
Transparent
Allows light through
Translucent
Scatters light
Opaque
Doesn’t let light through
In a reflection diagram what is the angle of incidence
It goes into the mirror from the left hand side
In a reflection diagram what is the angle of reflection
The line that comes out of the mirror that is on the right hand side also eaqul to the angle of incidence
What happens when light is shone at a concave mirror
The light is reflected inwards
What happens when light is shone at a convex mirror
The light is reflected outwards
Concave mirror folds what way (/)
)
Convex mirror folds what way (/)
(
What is the line going through both angles called
The normal line
What is at the bottom of the reflection diagram
The mirror ———
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Iris
helps control the size of the pupil to let more or less light into the eye.
Pupil
To allow light to enter the eye so it can be focused on the retina to begin the process of sight
Cornea
protecting the eye from outside infiltrates
Lense
to bend the light to focus it on the retina.
Retina
converts light that enters into your eye into electrical signals your optic nerve sends to your brain which creates the images you see.
Optic nerve
send visual messages to your brain to help you see
Three Main science colours are
Blue, green, red
3 main secondary science colour
Cyan, magenta, yellow
