The electromagnetic spectrum

Often we hear of ultraviolet radiation (UV) in the media. The message given is that it is a dangerous and...

X-rays are a form of electromagnetic radiation. They strike an object and, depending on the density of the object, some...

Radiation simply means the emission (sending out) of energy from a source. It could be a speaker that emits sound...

In this picture dictation activity, students use a range of skills to investigate some ways humans use the waves on...