What things happen when electromagnetic waves hit things?

2.  One thing that is the same

3.  Three things that can happen when electromagnetic waves hit matter (stuff)


4.  The thicker the polythene is, the light it lets through.
To absorb half of the light you need mm of polythene
A thickness of 4mm of polythene lets through only per cent of the light.

5.  What happens to the energy carried by infrared radiation?

6.  What happens to the energy carried by radio waves absorbed by an aerial?

7.  When light strikes the boundary between air and glass, about per cent of the light passes into the glass.
But about per cent of the light is by the glass.

8.  What happens to the other 11 per cent?

What you need to remember
When electromagnetic waves hit a solid, liquid or gas they may be , or (or more than one of these).
Electromagnetic waves transfer .  When the waves are absorbed by matter, this energy may make the matter up.
When radio waves or microwaves are absorbed by an , they produce an electric signal. 

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