Learn how pushes and pulls help things take off, speed up, and slow down.Rookie Read-About Physical Science series introduces the youngest readers to physical science concepts. Each book features critical-thinking questions throughout the text; a simple, hands-on experiment; a glossary and more. This series is aligned to the Next Generation Science Standards. Everything needs a push or pull to get moving. That includes rockets blasting into space, baseballs flying into the outfield, and even you!