This series provides an information library on the main aspects of physical science, with an emphasis on enquiry; answering the questions that children ask and addressing the topics that they are required to research at this level. Each book contains aspects of science which are linked to everyday examples that will be familiar to the reader to aid understanding, before moving on to more complex topics. There are answers to key questions about the main topics at this level. The books also include experiments to illustrate the topic under discussion and to develop understanding of scientific methodology. Scientific measurement is covered and the more unusal or amazing applications.