The fantastically successful 100 Facts series reveals the science behind all things speedy in this brilliant book. Discover how we measure acceleration, why heavy things are hard to speed up, and who first broke the sound barrier. Covering a wide range of topics from super-speedy animals to hypersonic planes, exactly 100 numbered facts will challenge children, acting as an incentive as they make their way through the book. Packed with exhilarating photographs, detailed diagrams and panels containing activities, quizzes and cartoons, 100 Facts is the perfect introduction to this fascinating subject.
