Explains how and why a thunderstorm occurs and gives safety steps to follow when lightning is flashing.

Explains how ants live and work together to build and maintain their cities.

Explains how bacteria and viruses affect the human body and how the body fights them.

Introduces the solar system and its nine planets. Includes directions for making two models, one showing relative sizes of the planets and the other their relative distances from the sun.

Uses observations of bean seeds planted in eggshells to demonstrate the growth of seeds into plants.

Describes the formation and characteristics of igneous, metamorphic, and sedimentary rocks and how to recognize and collect them.

Describes the habits and behavior of ducks, emphasizing the physical characteristics which prevent their getting wet.

Explains basic facts about the Big Dipper, including which stars make up the constellation, how its position changes in the sky, and how it points to the North Star.

What is a fossil? Sometimes it's the imprint of an ancient leaf in a rock. Sometimes it's a woolly mammoth, frozen for thousands of years in the icy ground. Sometimes it's the skeleton of a stegosaurus that has turned to stone. A fossil is anything that has been preserved, one way or another, that tells about life on Earth. But, you can make a fossil, too-something to be discovered a million years from now, and this book will tell you how.

Explains what causes wind and how it affects our environment. Includes instructions for making a weathervane.