The Core Topic Guide is a four book series designed to provide intermediate to advanced English language learners with essential background knowledge for all major topics appearing on the TOEFL (Test of English as a Foreign Language) iBT Test, a requirement for non-native speakers seeking admission to colleges and universities where instruction is in English. Empirical Sciences is the fourth and last volume and this book provides a selection of readings consisting of 60 passages total accompanied by questions on content, structure, and vocabulary at the end of each passage. Reading passages cover core areas such as Anatomy and Medicine, Astronomy, Chemistry, Physics and Technology. An answer key provides detailed explanations of the correct responses.