topic 1
Grade 8 light definition
A form of energy that allows us to see
What is the angle of incidence
Angle of reflection
What is the iris?
The part of the eye that controls how much light enters.
What cures nearsightedness
concave lens
what are the three primary colours of light.
What are red, green, and blue
What does LED stand for
Light Emitting diodes
what is the difference between a convex, concave and a plane mirror
Convex curves outward/towards you, Concave curves inward/away from you and a plane mirror is flat
What is the cornea?
The clear, curved part at the front of the eye.
what cures Farsightedness
Convex lens
what two colours make yellow light
red and green light
What is an incandescent light bulb
A high temperature bulb that it emits visible light
Define reflection
The process of light striking a surface and bouncing off that surface
What is the lens?
The part that focuses light onto the retina.
What is a microscope?
This tool uses lenses to magnify small objects.
What colour absorbs all colours?
the colour black
what is the ray model of light
predicts shadows, shows how distance affects shadows
What is refraction?
The bending of light
What is nearsightedness
A person who has difficulty seeing far objects may have this condition.
What is a telescope?
This device uses mirrors and lenses to view distant objects.
who did the glass prism thing figuring out that light can be colourful
Isaac Newton
what are the types of light
LED, fluorescence, phosphorescent, chemiluminescence, bioluminescence
What is the normal in
Light slows down and bends toward this line when entering a denser material
What is a focusing or vision problem?
Glasses and contact lenses help correct this kind of problem.
what technology uses fiber optics and light to send signals.
A fiber optic communication system?
what are the three Primary Colours in Subtractive Colour Theory
Cyan, Magenta, Yellow