The aim of this book is to create awareness of physical science concepts among high school students. Now-a-days great importance is given to physical science concepts because the development in mainly concentrated on science and technology. The knowledge of science and technology has become essential for fulfillment of peoples aspirations. Science provides a powerful way of investigation and understanding the world.The book consist of five chapters. The first chapter deals with the meaning, nature, characteristics, need and importance of science.The second chapter consist of review of related literature related to science. the third chapter discuss the methodology. The fourth chapter elaborates the analysis and interpretation of data. The fifth chapter ends with summary, findings and conclusions.