What's heavier, a ton of feathers or a tonne of bricks? When is a fluid not a liquid? Isn't a motor the same as an engine? Does your favorite rock band make sound or noise? Don't know the answers? Don't worry! If you can't tell fission from fusion, radar from sonar, or RAM from ROM, you're not alone. Lots of people confuse scientific and technological ideas, objects, and processes. Now, well-known science and nature writer Gary Soucie helps you understand the differences. Learn the distinctions between mass and weight and between atoms and molecules. Explore everyday differences between soap and detergent, and batteries and dry cells. Helpful illustrations and fun facts cover everything from what coins are made of to why laundry detergents might make your clothes glow under ultraviolet light. So, if you think cement and concrete are the same thing, if you don't understand how jets are different from rockets, just read this book. You'll enjoy it!

 

This book features in the following series: What's the Difference, What's the Difference? .

There are 96 pages in this book. This book was published 1995 by John Wiley and Sons Ltd .

GARY SOUCIE is a freelance writer who has written hundreds of magazine articles on science and nature. He was executive editor of Audubon magazine for many years.

This book has the following chapters: Partial table of contents:; SCIENCE. ; What's the Difference Between Arithmetic and Mathematics?; What's the Difference Between Analog and Digital?; What's the Differece Between Cycles and Phases?; What's the Difference Between Liquids and Fluids?; What's the Difference Between Radiation and Radioactivity?; What's the Difference Between Sound and Noise?; TECHNOLOGY. ; What's the Difference Between Iron and Steel?; What's the Difference Between Oil and Gasoline?; What's the Difference Between Motors and Engines. ; What's the Difference Between Cement and Concrete?; What's the Difference Between Batteries and Dry Cell?; What's the Difference Between Radar and Sonar?; Glossary. ; Index.