weather [5] [information over pictures]

This symbol is of a snowflake which suggests that the snowfall is very slight, perhaps a simple flurry.	Here is a symbol for more heavier snow, perhaps causing a slight covering of a few centimetres.	Here is a symbol for much more heavier and snow, perhaps even a snowstorm causing drifts and bad road conditions.
Here is a symbol which suggests lightning accompanied by rain. This could be over quite quickly.	Here the symbol suggests much more intense lightning but this time without rain but perhaps accompanied by thunder. This could last for a longer period of time.	Here the symbol suggests even more intense lightning and again without rain but perhaps this time accompanied by much stronger winds.

Look at all of the pictures in turn. As you hover over each one a blue screen appears with an explanation of what the picture shows. Important words are coloured. If you are certain that you know about the picture click on it and it will disappear. As you go through all of the pictures you will get rid of all those which you know about and be only left with those you may be unsure of. In some cases you may get rid of all of the pictures in which case you are ready to move on to other activities which will test your knowledge on that particular topic.