Science Flashcards
Simply- Light is a form of ________ that you can see
Energy
When light reaches a surface, it can be absorbed and transferred into different types of energy- what are the three ways?
Electrical
Chemical
Thermal
What are some examples of artificial and natural energy
Artificial Natural
Batteries Sun
Light bulbs Fire
Flashlights
What are the 5 types of energy
-Incandescent
-Florescence
-Phosphorescence
-Chemiluminescent
-Bioluminescence
What is Florescence light
An electric current is driven through a tube containing argon gas and a small mercury vapour which makes invisible ultraviolet light that hits off a coating on the inside of the tube, which then gives off visible light
What is Incandescent light
Heat causing a filament of metal to glow
What is Phosphorescence
A process in which energy absorbed by a substance is released relatively slowly in the form of light.
What is Chemiluminescent
Chemiluminescence describes the emission of light that occurs as a result of certain chemical reactions
What is Bioluminescence
Bioluminescence is the production and emission of light by a living organism
The longer the wavelength the _________ the frequencies
Lower
When you see a colour, the reality is that the colour is every colour pigment except the one it appears
True or False?
True!
What are the 3 different types of transparency’s?
Transparency, translucent and opaque
What absorbs light
Rough, black, opaque surfaces
What reflects light
Smooth, shiny surfaces
What happens to the particles in light
They get excited and “jump”
