Why does the ground shake during an earthquake? What machine draws wiggly lines to measure ground movement? How can you stay safe in an earthquake? Read this book to discover the answers!
Do you know what causes the northern lights? Where the northern lights are seen? Why the northern lights are so colorful? Read this book to discover the answers!
Where do most hurricanes start? How do people get ready when a hurricane is coming? When do most hurricanes happen? Read this book to discover the answers!