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 world's most famous maelstroms and will gain a deeper understanding of the connection between the climate and the planet.
"Readers will find out what makes fireflies glow as they discover fun facts about these incredible glow-in-the-dark insects. Fireflies glow for many reasons, including attracting mates and even other species of fireflies to eat! The biology behind a firefly's glowing body and the ways it uses its glow are just some of the things readers learn as they explore informative text and helpful fact boxes. Colorful images of fireflies show these insects glowing in beautiful detail"--Provided by the publisher.
Describes the communication methods of various types of animals, including voice and song, scent, patterns and colors, warning signs, body language, and courtship displays.
The American Civil War began in 1861 when a group of Southern states voted to secede. At that point, no one knew what a heavy toll the ensuing war would have on both sides of the conflict. Not only did more than 850,000 die, but millions more would suffer in other ways. Families of soldiers were left behind, just hoping to see their loved ones again. Provides important facts about the war as well as critical information about its impact on family life.
Without the American Revolution, there would be no United States. The impact of the war is undeniable. And yet studies of this conflict, essential in every elementary school, are often cursory. This valuable volume delivers a more complete look of the war, including the real experiences of soldiers on the frontlines as well as their families at home.
Explains what it means to be an undocumented immigrant, and discusses the reasons for immigrating illegally, the often dangerous journey, immigrants' rights, their role in the economy, immigration law, deportation, and the route to citizenship.
