Question & Answers How Things Work Pb

"How Things Work" is part of the comprehensive "Questions and Answers" series. It asks questions such as how do lenses help you see?; how are stripes put into toothpaste?; why does a lightbulb glow?; what's inside a battery?; and what do gears do? Editorial Reviews About the Author Philip Brooks is a contributor for Kingfisher titles including: 'Exploration and Discovery','1000 Questions and Answers','How Things Work' --This text refers to an alternate Paperback edition.