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Earth's lithosphere is the rigid, outer part of the planet, including the crust and upper mantle. Readers of this informative guide will learn about the types of rock, including igneous, metamorphic, and sedimentary, that make up the lithosphere—and how they come together to form the rock cycle. They'll also see how the movement of tectonic plates inside Earth creates landforms and natural events. Helping to fulfill standards in the earth science curriculum, this book features vibrant photographs and in-depth sidebars.

The biosphere is the part of Earth where life exists or can exist. It includes all living things on Earth, as well as the nonliving systems that help them survive. Readers of this stimulating volume will learn how people affect the biosphere and how life and energy are maintained in the biosphere. Key elementary science curricula, including concepts such as food chains and life cycles, are reinforced through eye-catching graphic elements and age-appropriate text.

Water is one of the more essential components needed to sustain life on Earth. All water on the planet in all its states—frozen, liquid, and gaseous—make up the hydrosphere. Readers of this captivating volume will learn that liquid water not only exists on the surface of the earth but also in reservoirs underground. They'll also learn that frozen water exists as glaciers, ice caps, and icebergs, making up a special subcategory of the hydrosphere called the cryosphere, and that water can even be found in the atmosphere in the form of water vapor. Key STEM concepts are reinforced with eye-catching graphic elements and accessible text.

Earth's atmosphere plays a key role in maintaining the overall health of the planet. It is made of a very thin layer of air, which covers every inch of Earth's surface up to the edge of space. Readers of this engaging volume will learn all about the atmosphere, from its composition and behavior to how it affects life on Earth. Eye-catching photographs pair closely with age-appropriate text, supporting a deeper understanding of the curriculum-based content.

Sharing personal information online could lead to undesirable outcomes. With the help of this book, young Internet users will learn the importance of keeping their personal information to themselves and not putting it on the Internet. Accessible text and full-color photographs help readers understand key concepts and encourage them to be responsible and safe Internet users. Promoting online safety and security, this book is an essential resource for anyone who surfs the Internet.

Just one click could compromise the security and contents of a computer. With the help of this book, readers will learn how to avoid downloads that could harm their computer. Young Internet users will learn about viruses and other threats that come with downloading dangerous material online. Practical solutions to relatable problems are offered and will encourage readers to be responsible online. Full-color photographs help readers understand important concepts. As a key resource for Internet safety, this book is sure to be a popular addition to any library or classroom.