Test the weather forecast
Your weather lab starts here
Measuring what's going on in the air is the best way to predict
what the weather's going to do next. Forecasters gather these
measurements all the time, and use them to make their weather
forecasts. You can do the same with our guide to using simple
You can easily make your own simple gadgets to collect
information about wind speed, rainfall, humidity, pressure and much
more. But you'll only get good data for forecasters if you take
measurements that are valid. Don't worry, we'll show you how.
For advice on building loads of instruments and using them, see
the Royal Meteorological
Society's web site.
Here is Weather Lab's pick of some easy measuring gadgets to
To measure wind speed or strength
To measure rainfall
Measure air pressure
To maesure air pressure, you need a barometer. There a lots of
different types of barometer to make:
For a basic introduction to weather which
covers all the data that might be measured, see the BBC Schools What is
Watch out - your data must be good!
Gadgets and experiments do not always give valid results. Errors
in measuring weather conditions might be caused by local winds and
draughts, shade, inaccurate readings, broken devices and much more.
Get it wrong and no-one will trust your weather forecast again! So
you need to be sure that your weather readings are as good as you
can make them. Go to Are my measurements right?
to find out how to get the most accurate readings.