Winterberg, Jenna

"Explore the rich history of the United States national parks. You can visit more than 400 sites across the United States. These sites protect nature and wildlife. They balance preservation with tourism. Many people work hard to protect these special places for future generations"--Back cover.

"Forces are part of our everyday lives. And knowing how they work makes us all more powerful! Balanced forces will keep you upright on your bike. Unbalanced forces will help you ride your bike as fast as the wind. Balanced and unbalanced forces play a part in all that we do"--Provided by publisher.

"Dynamite is highly explosive. This is because it's a chemical reaction waiting to happen. Many things go through chemical reactions. When you cook or eat, a chemical reaction takes place. Understanding chemical reactions will not only keep you safe, it will also help reveal the world around you"--Provided by publisher.

"Beep, beep, beep! Whirrrr. From loud and annoying to peaceful and relaxing, sounds are an ever-present part of life. Sound not only helps us send messages to one another, but also tells us about our world"--Provided by publisher.

Describes the properties, study, and effects of light. Discusses how wavelengths from light are used with radios, microwaves, and X-rays; the spectrum of colors in light; and electromagnetic radiation. Includes color photographs, a glossary, further resources, and an activity.

Presents information about the scientific law of conservation of mass. Discusses physical and chemical changes to matter, the history of the conservation law, energy, and systems of conservation. Includes a glossary, index, and instructions for an experiment.

Follow the adventure of Boomer, a hapless pup, while learning to draw the characters featured in the story.