This stimulating and accessible volume offers readers a fascinating view of a force known as gravity. Readers examine many scientific concepts, including Newton's laws of gravity, mass and gravitational forces, galaxies, satellites, Earth's solar system, centrifugal force, tides, and erosion. Vocabulary boxes provide additional guidance to readers, and the Compare and Contrast and Think About It sidebars give students opportunities to ponder concepts in fun and creative ways; for example, "Earth has more mass than Mars. If you stepped on a scale on Mars, would you weigh more or less than you do on Earth? Why?"

Tornadoes are some of the strongest storms on the planet. Its not safe to go near them, but what if we could? Readers will dive into the world of wild weather in a special ship that lets them get up close and personal with a tornado. From the cone of silence deep inside the storm to the incredible winds and lightning created by a superstorm, this book will electrify readers as well as educate them on what to do if a tornado forms nearby.

Adultery, fornication, breach of marriage contract, sexual slander - these, along with religious offences of various kinds, were typical of the cases dealt with by the ecclesiastical courts in Elizabethan and early Stuart England. What was it like to live in a society in which personal morality was regulated by law in this fashion? How far-reaching was such surveillance in actual practice? How did ordinary people view the courts - as useful institutions upholding accepted standards, or as an alien system purveying unwanted values? How effective were the church courts in influencing attitudes and behaviour? Previous assessments of ecclesiastical justice, coloured by contemporary puritan and common law criticisms, have mostly been unfavourable. This in-depth, richly documented study of the sex and marriage business dealt with under church law, based on the records of the courts in Wiltshire, Cambridgeshire, Leicestershire and West Sussex in the period 1570-1640, presents a more balanced and more positive view.

Sharks have a kind of sensory superpower called electroreception. This means they can sense electricity in their watery habitats. Other marine animals, such as dolphins, also share this special sense. Readers discover the ways these animals use their ability to sense electricity and the science that creates this supersense. Fun facts about these animals and their supersense present a fresh look at science curriculum topics such as electricity and animal adaptations. A helpful graphic organizer is also included to aid visual learners. Vibrant photographs of sharks and other animals in their natural habitats add to this electric reading experience!

Ticks have been long known to transmit Lyme disease. However, there are more than 800 species of tickand only two of these carry disease to humans at all! That doesnt stop tick bites from being a great annoyance, especially considering theyre caused by a tick sucking your blood! Often grouped with another real-life vampire, the flea, ticks use this blood to complete their life cycle while fleas use it for food. Surprising facts about the life cycle, habitat, and feeding habits of these bugs engage readers while full-color photographs bring these tiny creatures into clear view.

Caves are some of the creepiest and coolest places on Earth. Brave scientists known as cave geologists venture into their dark depths in order to learn more about these extreme places. Thanks to detailed text and photographs of cave geologists at work, readers can feel like theyre in mysterious caves alongside these scientists. Cave geologists use science, technology, engineering, and math to do their research and to stay safe in this dangerous environment. In learning about this career, readers also learn about important topics in STEM-focused science curricula. Fun fact boxes and a graphic organizer enhance this exciting reading experience.