Make your own hydro pumping station

Nicola, Pete, Lola and Nell want to travel the world with a difference. We hope to get a taste of many countries without adding to climate change (with needless emissions from aeroplanes) or having to waste hours of holiday time in airport terminals. We hope our adventures inspire you to take a Grand Tour of your neighbourhood. Here's an experiment copied from Lola's travel journal:

Experimant! This is how a hydro pump storage power station (eg, Ben Cruachan by Loch Awe) works.

Need: 1 glass of full water. 1 sausepan. 1 straw.

1) Pour the water over your finger into the sausepan

2) Suck the water back into the glass

3) Repeat this until your board of it

Notes: This is how a hydro station works. First the water falls down from a reservoir hitting the turbine so it generates electiricty that gets sold to the national grid. At night the water gets pumped back up when the electricity is cheaper to buy.