Books in Nature's Mysteries series

Whirlpools, swirling vortexes in the ocean sometimes capable of capsizing entire ships, have long been featured in legend as the work of sea monsters or as gateways to other worlds. We now know that they are normal oceanic currents, usually caused by tides. This attractive volume concisely examines the natural and human-made conditions that create whirlpools, eddies, and more, providing a window into the field of oceanography for an elementary audience. Readers will be fascinated by images of some of the worlds most famous maelstroms and will gain a deeper understanding of the connection between the climate and the planet.

The fabled oasis in the desert mirage is just one example of the strange things that can happen when light hits the air in certain atmospheric conditions. This captivating volume takes a closer look at mirages and similar phenomena, explaining to elementary readers that there is much more to these natural optical illusions than meets, or doesnt meet, the eye. Topics covered include refraction, the difference between superior and inferior mirages, green flashes, and the famous Fata Morgana castle in the sky mirage. Vocabulary boxes identify key terms, while Think About It and Compare and Contrast questions prompt critical thinking about optics and light.

Water that lurks beneath the Earth’s surface is usually far easier to ignore than the water that covers it, until that water bursts forth above ground as geysers and hot springs. This engaging volume explains to young readers where this water comes from and its relationship to volcanic activity underground. They will also learn where on Earth these spectacular eruptions are found, how geothermal energy can be harnessed for our use, and much more. Striking images of Old Faithful and other geysers fill the pages of this informative volume, while additional geological principles are imparted through boxed questions and terms.

Tornadoes, also called twisters, have terrified people throughout history. Tornado winds are the strongest on Earth and can reach speeds of 300 miles or 500 kilometers per hour. In this captivating volume, students learn how, where, and when tornadoes are likely to form, and the damage they can inflict. They discover the variety of tools that scientists use to measure and predict tornadoes, and the essential role of storm spotters. This resource also explains to readers how to stay safe before, during, and after a twister hits. Special sidebars define key vocabulary words or pose questions to spur critical thinking.

Whirlpools, swirling vortexes in the ocean sometimes capable of capsizing entire ships, have long been featured in legend as the work of sea monsters or as gateways to other worlds. We now know that they are normal oceanic currents, usually caused by tides. This attractive volume concisely examines the natural and human-made conditions that create whirlpools, eddies, and more, providing a window into the field of oceanography for an elementary audience. Readers will be fascinated by images of some of the worlds most famous maelstroms and will gain a deeper understanding of the connection between the climate and the planet.

Auroras, the dancing lights that most often grace the night skies of the North and South Poles, look like magnificent kaleidoscopes of light and color to the naked eye. This absorbing volume breaks down this breathtaking phenomenon, using it to introduce elementary readers to the basics of magnetism and atmospheric science. The narrative carefully explains how the Earths poles and atmosphere affect solar wind and describes how similar dazzling displays are visible on other planets. Vivid images capture the wonder of the northern and southern lights, while boxed terms and guiding questions nurture a deeper curiosity about our atmosphere.

Gemstones and snowflakes represent some of our most memorable and alluring interactions with crystals, but crystals form many different materials, come in various shapes, sizes, and colors, and can grow in several different ways. This inviting volume examines the science behind crystal formation, clearly explaining to an elementary audience the difference between the types of bonds that hold crystals together and elucidating the melting, freezing, and dissolution processes that yield crystalline structures. Readers are also guided through the process of growing their own crystals at home. Vocabulary, Think About It, and Compare and Contrast boxes round out the engaging narrative.