Energy is a concept that’s central to physics, but because it’s a word we use every day its meaning has got a bit woolly. I mean, it’s easy to say what it is in a sense. Obviously this river ...

The questions in this quiz are suitable for GCSE physics students studying types of energy store, energy transfers, energy dissipation, the conservation of energy and calculation of energy changes.

Symmetry in time – that is, physics remaining the same when translated forwards or backwards in time – amounts to the conservation of energy. So, as ideas in physics go, they don’t come any ...

"While energy conservation is a popular buzzword today ... chaotically like smoke waving wildly in the wind. Based on the physics of these airflows and heat transfer, if a roof peak is shorter ...