This comprehensive encyclopedia is a subject-specific guide to concepts, theories, discoveries, pioneers and issues that meets the information need for core science studies. It includes approximately 1,000 entries and 350 photographs and illustrations with attention given to women, minorities and lesser-known scientists.

Now available as a full-colour version, this best-selling fifth edition has been written for the IB student and covers the entire IB syllabus, including all the options at both Standard Level and Higher Level. The student-friendly design makes this comprehensive book easy to use and the accessible language ensures that the material is also suitable for students whose first language is not English. It includes: answers to the end-of-chapter questions; worked examples highlighting important results, laws, definitions and formulae; and a glossary of key terms.

Explains essential facts about light and dark, including natural and artificial light, color, and reflection. Includes experiments.

Explains essential facts about forces and movement, including gravity, friction, pressure, and simple machines. Includes experiments.