This book is specially written to cover all 5 themes in the latest MOE Science syllabus Cycles, Systems, Diversity, Interactions, and Energy. It contains multiplechoice questions and openended questions that will help to develop critical thinking and build examination confidence in students. The questions are set at a higher standard to encourage students to think about a problem at a deeper level in order to solve them. Complete solutions are provided at the end of the book for selfevaluation.This assessment book is published by CPD Singapore Education Services. We publish various assessment books in subjects such as Mathematics, English, Science and Humanities.