Sound and Light Flashcards
If you tighten the strings on a guitar what would happen
The sound would have a higher pitch
What would happen if the strings on a guitar were thicker
It would have a lower pitch
What is the loudness of a sound called
Decibels (Db)
What would happen if sound waves hit a barrier
They would be reflected back
can sound travel through a solid
yes
can sound travel through a liquid
yes
can sound travel through a gas
yes
can sound travel trough a vaccum
no
Which form does sound travel the fastest through, why
solid because the particles are packed tighter
What is the unit used to measure frequency
Hertz (Hz)
If you had a large amplitude would the sound be loud or quiet
loud
if you have a greater frequency would the pitch be high or low
high
How is an echo produced
When sound bounces of multiple surfaces
define translucent
only some light can pass through the object
Define transparent
Light can pass directly through the object
define opaque
no light passes through the object and a shadow is formed
White light consists of which colours
red, orange, yellow, green, blue, indigo and violet
What is refraction
the bending of light
what do lenes do
help you to focus onto a object
what type of lens is in your eye
convex lens
what are the 2 rays called in a reflection
the incident ray and the reflected ray
what are the 2 angles called in a reflection
the angle of incident and the angle of reflection
what does the law of reflection state
that the angle of incidence equals the angle of reflection
What is the retina
It is where the image is formed in the eye
What is the iris
The muscle that controls the size of the pupil
What is the cornea
Transparent outer part of the eye that refracts the light
What does the pupil do
Light goes through this, and the size of it affects how much light enters the eyes
