Earth can seem like a huge place when you think about all the great places you can visit, but in the scope of the universe, Earth is a fairly small planet. Understanding the makeup of Earth and its place in our solar system is an important part of the science curriculum. This book presents the most important information readers should know in an exciting layout full of exciting facts, real-life examples, and colorful diagrams. Riddles and pop quizzes...

Anyone who learns about the force of gravity in our lives has probably wondered what it's like to be weightless. In this volume, readers can find out the incredible impact gravity and other forces, such as magnetism, have on their life every day. Each chapter gives an accessible overview of the topic and then invites readers to dive deeper with relatable photographs, diagrams, sidebars, and fun facts. Through riddles, pop quizzes, and simple experiments,...

It seems impossible that the tiny parts of the ear allow us to hear birds chirping, music, and someone speaking. Each sound travels through the air and causes the parts of the ear to vibrate. The brain uses this information to tell us what we've heard. That's just the beginning of what this book can teach readers about sound. Detailed, colorful diagrams and simple explanations show readers how echoes work, how sound is recorded, what ultrasounds are,...