Light
What is light?
A form of energy that you can see.
How does reflection occur?
When light bounces off of something.
What is refraction?
The bending of light when it travels from one medium to another.
What is an incandescent light source?
Heating an object to high temperatures until it emits light (Ex. light bulb, candle)
What does luminous mean?
Gives off its own light
How does light react when it strikes transparent material?
All light goes through.
What is the incident ray?
What is the angle of refraction?
When the refracted ray goes away from the normal line
What is a fluorescent light source?
What is the difference between artificial and natural light sources?
Man made vs made from nature.
How does light react when it strikes translucent material?
Some light goes through.
What is the angle of reflection?
The angle between the reflected ray and the normal line.
What is a convex mirror?
Mirrors that curve outward Ex. car doors
What is a Phosphorescent light source?
Light energy that is stored by certain particles and released as visible light and water. Ex. glow in the dark objects
Which light source works by heating something until it glows?
Incandescent
How does light react when it strikes opaque material?
No light goes through.
What is the normal line?
The line that is in between the incident and the reflected ray.
What is a concave mirror?
Mirrors that curve inward Ex. dentist mirror
What is a Bioluminescent light source?
Light emitted from living things. The chemical reactions inside living things Ex. Deep sea fish
Which material lets all light pass through clearly?
Transparent
What are the colours of the spectrum?
ROY G BIV
What is the law of reflection?
Angle of incidence = Angle of reflection
Which type of mirror's reflection appears upside down?
Concave
What is a Chemiluminescent light source?
Light that can be released by chemical reactions Ex. glow stick
The angle of reflection is...
The angle between the outgoing (reflected) ray and the normal line.