Types of Lights with examples!

Luminous: An object or thing that produces light on its own. Eg. Sun
Non- Luminous: Reflects light from another source. Eg. Moon
Incandescent: Heated to produce light. Eg. Tree
Bio-luminescent: An object that is naturally luminous. Eg. Glow worms

Speed of Sound and Light!

Speed of Sound: 340m/s
Speed of Light: 300 million m/s

Energy revision!

Conduction: Heat can be transferred from one object to another.
Convection: Takes place when heated molecules move from one place to another, all of them containing the heat internally.
Radiation: Radiation leaves the object in the form of waves, the warmer the object the shorter the wave length of the particular radiation.