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Waves are one way in which energy may be transferred between stores. Both mechanical and electromagnetic waves will transfer energy but not matter.

At a boundary, waves are reflected, refracted, or absorbed. Waves, such as ultrasound, can be used in medicine and other industries.

Electromagnetic waves are transverse waves with a wide range of properties and uses. Some of the waves are also hazardous to human body tissues.

What are lenses? In this GCSE physics study guide, you will learn that lenses are precisely shaped pieces of glass that have been developed and used in corrective glasses, telescopes, microscopes, binoculars, and magnifying glasses.

Colour and the nature of images depend on how visible light is reflected, absorbed or transmitted when it interacts with materials.

Understanding how to approach exam questions helps boost exam performance. Questions will include multiple choice, descriptions and explanations, using mathematical skills and extended writing.