Rocks Rivers And The Changing Earth

This illustrated introduction to geology offers young readers insights into everyday signs of our constantly changing environment. Fascinating subjects include rivers of ice, the rise of volcanoes, and the formation of precious stones.

Learn about the characteristics, origins, formation, and uses of rivers.

Earth is changing every day. Erosion makes giant mountains smaller and rivers wider, but it happens so slowly most people don't even notice. Do you know what erosion is? Or what causes it? Explore the amazing eroding world in this book.

Learn how water and wind shape the landscape of Earth.

Features lessons and activities suitable for Primary (Grades 1-2, ages 6-8), Junior (Grades 3-4, ages 8-10), Intermediate (Grades 5-6, ages 10-12); many intermediate activities are also suitable for Grades 7-8. (See: "Grading Science Teaching to Age Levels" --p. xiv-xv.

A chunk of granite rock may look gray and boring, but take a closer look under a microscope and it’s possible to see that the rock is made from billions of tiny colorful grains. Each microscopic grain is a substance called a mineral, and it’s minerals that are the ingredients that make up all the rocks on Earth. In this book, readers will learn how different combinations of minerals create different types of rocks. They’ll discover that metals, such as gold, are actually minerals that can be found in rocks. And they’ll learn that some minerals grow as beautiful shapes called crystals that can be made into precious gemstones such as rubies and sapphires. Filled with information perfectly suited to the abilities and interests of an early elementary audience, this colorful, fact-filled volume gives readers a chance not only to learn, but also to develop their powers of observation and critical thinking. From stunning photographs to high-interest facts, this book makes exploring the topic of rocks and minerals a lively, engaging experience.

Rocks and minerals make up the foundation of our world. Relatable examples and accessible text combine to introduce young readers to these vital resources and explain how their actions can help preserve them.

The outside layer of our planet is an active place. Earth's crust is always growing and changing. But do you know how Earth's crust forms? And what happens when its plates shift suddenly? Find out more about the moves that make mountains and ocean ridges in this interesting book!