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A moment is the turning force that is exerted at right angles (perpendicular) to a pivot. For example, on a see-saw, the moments would be the forces exerted on each end by the people sat on it. If the see-sa...

Standard form (sometimes called standard index form), is a way of writing out numbers. It is especially useful when it comes to VERY large or VERY small numbers, which normally would take lots of time (and p...

​What is diffusion? Diffusion is a natural process, definied as the net movement of particles from an area of high concentration to an area of low concentration . But what does this mean? Imagine you're goin...

Sitting down at your desk in the exam hall can be extremely daunting. Months of preparation, cramming and anxiety have lead to this moment and it's natural to feel overwhelmed and panicked. The most importan...

The term infant mortality rate refers to the number of children dying before reaching their first birthday per 1000 live births.