Introduces earthquakes, their causes, and the damage they do; describes how scientists can determine that an earthquake is coming; and provides advice on preparation and survival.

Introduces tornadoes, describing their causes, where they occur most often, how they are measured, how meteorologists predict and track these storms with radar, and includes a safety checklist.--

Find out what causes spring, summer, fall, and winter and howdifferent parts of Earth experience the seasons.Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources forfurther research, and an introduction to the author.

"What does it take to make a simple trap? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best trap around!"--

"What does it take to make a tough tower? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best tower around!"--

"What does it take to make a boat float? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best boat around!"--

Presents the life of the astrophysicist, including his childhood in the Bronx, his academic career, and his status as a scientific expert.

"What does it take to make a sunshade? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best sunshade around!"--

This fascinating book offers young readers an up-close look at asteroids. The book also includes a table of contents, fun facts, a "That's Amazing!" special feature, quiz questions, a glossary, additional resources, and an index. This Focus Readers title is at the Beacon level, aligned to reading levels of grades 2-3 and interest levels of grades 3-5.

Takes a closer look at the bladder's role in the urinary system. Explores how the bladder works with the kidneys and the brain to get rid of the body's waste.