Extreme Earth science-(this is usually two sessions)
Earthquakes, Tsunamis and Volcanoes.
Our world is extreme. But what causes such devastating events. Make our own seismograph and find out which buildings and ground is most at risk. Make a fabulous beach then watch the devastation of a tsunami, how can we prevent it?
And who doesn't like a volcanic eruption
(of the sandpit type of course) create your own prehistoric world and watch a volcano explode over a field of dinosaurs. Will they escape?