Let's Rock!

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

Igneous rocks form when magma from Earth's core cools as it moves toward Earth's surface. Most of Earth is made of igneous rock, which is sometimes called "fire rock." Your readers will learn the different kinds of igneous rock, how igneous rocks form, and how igneous rocks fit into the rock cycle. Captivating photographs show readers how beautiful igneous rocks are and fact boxes provide exciting additional information.

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.

Although Earth is mostly made up of igneous and metamorphic rock, sedimentary rock covers about 75 percent of Earth's land surface. This means it's the most visible kind of rock on Earth. Sedimentary rocks form when sediment accumulates and compacts. Your readers will learn how sedimentary rocks form, the different types of sedimentary rocks, and how people use sedimentary rocks. Fun fact boxes provide readers with additional information. A helpful diagram illustrates how sedimentary rocks form.

Weathering is when rocks break down into sediment due to natural processes, while erosion is when natural agencies such as wind carry sediment to another place. This book explains the different types of weathering and erosion and how these processes work together. Information on how humans can combat these natural but destructive processes is covered. Color photographs show weathering and erosion in action. A helpful diagram explains how they work together to create the world around us.