Light Energy
Colour by Addition
Colour by Subtraction
Light Rays
Mirrors
100
Energy in the form of a wave.
What is an electromagnetic wave?
100
Red, green, and blue.
What are the primary colours of light?
100
The bouncing back of light from an object.
What is reflection?
100
A flat, reflective surface.
What is a plane mirror?
100
The centre point of a sphere.
What is the centre of curvature?
200
Produces and emits light.
What is luminous light?
200
Yellow, cyan, and magenta.
What are the secondary colours of light?
200
Absorbing/reflecting all light so objects are not visible.
What is an opaque object?
200
A line perpendicular to a surface.
What is the normal?
200
A mirror shaped like the inside of a sphere.
What is a converging mirror?
300
The sequence of colours that make up white light.
What is the visible spectrum?
300
Any two colours of light that appear white when mixed together.
What are complementary colours of light?
300
Absorbs some colours of light and reflects other colours of light.
What is pigment?
300
The reflection of light off a rough, irregular surface.
What is diffuse reflection?
300
Bending of light.
What is refraction?
400
The production of light from a chemical reaction within an organism.
What is bioluminescence light?
400
Allow us to see colour.
What are cones?
400
Magenta, cyan, and yellow.
What are the primary colours of pigment?
400
Represents a single unit of light and is drawn as a single straight arrow.
What is a ray?
400
Reflection of light when the angle of incidence is greater than the critical angle.
What is total internal reflection?
500
The production of visible light by an object that has absorbed invisible radiation.
What is fluorescence light?
500
Detect low levels of light.
What are rods?
500
Red, green, and blue.
What are the secondary colours of pigment?
500
An image that cannot be seen on a screen because light rays do not actually meet at the image.
What is a virtual image?
500
An image that is visually misleading.
What is an optical illusion?
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