Science Revision Physics Notes

Página 1

Infrared Radiation

Key Points

Infrared radiation is;

The transfer of heat

Created by waves

Emit = give out

Absorb = take in

Coloured surfaces different (dark, emits and absorbs more than light colours)

Special camera can measure it

How Energy can be transferred by Heating

Heat can be transferred from place to place by conduction, convection and radiation.

Página 2

States of Matter

Key Points

Solid;

Fixed shape

Fixed volume

No movement

Liquid;

Particles in contact

Move randomly

Fixed volume

Gas;

Particles far apart

Move randomly and quickly

Fills the space