What is light?
A form of energy that travels in waves.
What is light?
Does not produce its own light. Reflects light from another source.
What is an artificial light source?
Produce their own light.
What is a luminous light source?
The range of all types of electromagnetic waves.
What is the electromagnetic spectrum?
Roughly 300 000 km/s.
What is the speed of light?
This is made up of all colours.
What is white light?
Light produced by a chemical reaction inside a living organism.
What is bioluminescence?
Light produced when an object is heated to a high temperature.
What is incandescence?
This colour light wave has the lowest frequency, longest wavelength, and least amount of energy.
What is red?
This happens when light bounces off a surface.
What is reflection?
A renewable and constant light source.
What is the sun?
Light produced by a chemical reaction with little or no heat.
What is chemiluminescence?
Light produced when an object absorbs ultraviolet (UV) light and immediately releases visible light.
What is fluorescence?
The 5 main properties of a light wave.
What are amplitude, trough, crest, wavelength, & frequency?
This happens when light bends as it passes from one medium to another.
What is refraction?
This happens when materials absorb light.
What is heat?
Light produced when certain materials are scratched, crushed, or rubbed.
What is triboluminescence?
Light produced when an electric current flows through a semiconductor.
What are LEDs?
This colour light wave has the highest frequency, shortest wavelength, and most amount of energy.
What is purple?
Angle of Incidence = Angle of Reflection
What is the Law of Reflection?
The portion of the electromagnetic spectrum that we can see.
What is visible light?
Light produced by passing an electric current through a gas.
What is electric discharge?
Light produced when an object absorbs UV light and slowly releases it over time.
What is phosphorescence?
These rays have the highest frequency on the electromagnetic spectrum and can be used in radiation therapy.
What are Gamma Rays?
Light bends through layers of hot and cold air, making distant objects appear displaced or inverted.
What is mirage?