Explores the many methods scientists use to understand our world and the universe. This series covers various topics central to the study of Earth and the physical, chemical, and biological sciences. It provides supplements to an extensive science curriculum.

Gravity dominates the universe. It holds the Earth, the Sun, and the Milky Way together, and it keeps our feet firmly planted on the surface of our planet. When an object goes up, it is pulled back to Earth by gravity. These facts make it easy to conclude that gravity is a strong force, but it is actually a very weak force whose confusing and contradictory nature has stumped many investigators. Gravity explains how two of the greatest scientific minds in history--Isaac Newton and Albert Einstein--finally unraveled most of the mystery surrounding this peculiar force, and how scientists today...

Evolution is the process of gradual change that occurs naturally through a combination of inherited changes and adaptation to environmental opportunities. Explored by Charles Darwin in his seminal work On the Origin of the Species by Means of Natural Selection, this process takes place in generation after generation of a species. The theory of evolution--that all forms of life on Earth can be traced back to single-celled organisms that arose in the oceans 3.5 billion years ago--is the only scientifically accepted explanation for how this happened. Evolution explains the scientific theory of...

As children, most people were vaccinated against common illnesses such as mumps, measles, and whopping cough. Before these therapies were developed, many were susceptible to contracting these diseases and spreading them to others. In Vaccines, learn how early vaccines were discovered, how greater understanding of the immune system and antibodies taught scientists why these treatments work, and how that knowledge assists in the development of new preventative measures. This highly readable narrative describes international efforts to eradicate diseases and to prevent the spread of new forms of...

Our world is largely defined by what we see and hear-but our uses for light and sound go far beyond simply seeing a photo or hearing a song. A concentrated beam of light, lasers are powerful tools used in industry, research, and medicine, as well as in everyday electronics like DVD and CD players. Ultrasound, sound emitted at a high frequency, helps create images of a developing baby, cleans teeth, and much more. Light and Sound teaches how light and sound work, how they are used in our day-to-day lives, and how they can be used to learn about the universe at large.

Science Foundations explores the many methods scientists use to understand our world and the universe. The accessible titles in this new series cover many important topics central to the study of Earth and the physical, chemical, and biological sciences, while presenting these subjects in an easy-to-read, functional format. From the tiniest quantum particle to the expansion of the universe, the volumes in this series provide excellent supplements to an extensive science curriculum.

'The Expanding Universe' goes beyond the creation of the universe to explain how scientists think the universe works, grows and changes.

In 'Electricity and Magnetism', readers will learn about the different concepts of electricity, magnetism, and electromagnetism, as well as how electric currents and circuits, electric motors, and electric generators have changed our world forever.

This title comprehensively explains quantum theory and its everyday uses in our world.

Earth teems with life, supporting an estimated 30 million different types of organisms. This book explores the differences and similarities of these life forms, and the strategies that organisms use to eat, reproduce, and survive.