Waves Flashcards
The primary colours of light are
Green, Blue and Red
Light is a
Transverse wave
Transverse wave’s vibrations are
Perpendicular
The superposition
Where 2 waves come together and their displacements combine
The Angle of incidence is the same as
The angle of reflection
White light is made of
All the colours in the spectrum
red has the
Longest wavelength in the spectrum
Grass
Absorbs all colours except green which is reflected
Light can only travel in
Straight lines
In the retina all images will appear
Upside down
Sound waves are caused by
Vibrations from objects/particles
Sound cannot travel through a vacuum as
it needs particles to vibrate
The more particles
The faster the wave travels
The frequency is
The number of waves passed through a point per second
Frequency is measured in
Hertz(Hz)
Frequency is a measure of
PITCH
High frequency =
High pitch
A high amplitude =
loud sound
light travel faster or slower than sound?
Faster
Auditory range
The range of frequencies you can hear per second
humans auditory range
20Hz to 20000Hz
longer wavelength =
Higher Amplitude
light reflection
Light bounces off the object at the same angle
Light absorbed
Light is absorbed by the object
Transparent
Light can travel through without shadows
Opaque
Light cannot travel through and leaves a shadow
Longitudinal waves
vibrations are parallel
transmitted
Light goes through the object, the ray bends depending on the density of the object it’s passing through
Luminous objects
Give off light
We can see non-luminous objects as
It reflects light from luminous objects
