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Quarks are the building blocks of protons and neutrons, as found in the nucleus of atoms. They are as far as we know, fundamental particles, but this could change in the future. There are 6 types, named u...

I would start by defining nuclear fission: 'Nuclear fission is the process of splitting up atoms and harnessing the energy from the reaction.' I would then proceed to explain how this occurs: 'Fission hap...

Friction is a force, and no object can change speed (accelerate/decelerate) without first being acted on by a force. On a frictionless surface (with no other external forces present), there is therefore n...

In basic terms, general relativity is based on Einstein's equivalency principle. It states that in a closed environment, there is no way of distinguishing between the effects of gravity and of a constant ...

Hertz (Hz), or sometimes megahertz if the Hz is very large.