Explains the processes by which a hamburger and other foods are used to make energy, strong bones, and solid muscles as they pass through the digestive system.

This books describes how and why fireflies make their light, how to catch and handle them, and several uses for firefly light.

Explains how and where glaciers form, how they move, and how they shape the land.

This book describes how sunshine and the tilt of the earth's axis are responsible for the changing seasons.

You are lying in bed listening to the soft sound of rain. It has been coming down for hours. Now something is changing. The rain sounds harder and louder, and there is water running down the road, which looks like a small river. What is happening? You are hearing and seeing the start of a flood. Read and find out about the different kinds of floods, how they start, and how to stay safe. Featuring vocabulary bolded throughout the text, this book also...

Describes the behavior of different kinds of ducks and, in particular, discusses how all ducks use preening to keep their feathers dry.

Describes the various properties of air and shows how to prove that air takes up space and that there is air dissolved in water.

Explains how water flows from brooks, to streams, to rivers, over waterfalls, through canyons and dams, to eventually reach the ocean.

Describes various scientific theories which explore the extinction of the dinosaurs.

Explains in simple terms what happens during a solar eclipse.