1
Q
What is conduction
A
Fastest in Solids, Slowest is Gas
The process of energy transfer from one end to another by vibrating particles colliding with neighbouring molecules.
2
Q
What is Convection
A
Only in Liquid and Gas
Hotter medium is less dense and floats to top, denser cooler medium sinks to bottom replacing hotter medium. The process repeats until a convection current is formed.
3
Q
What medium does radiation require
A
does not need a medium
4
Q
what makes a good emitter of radiation
A
Dull surface
Dark coloured surface
Large surface area
5
Q
what makes a bad emitter of radiation
A
Shiny surface
Brightly coloured surface
small surface area
O-level Physics
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