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Too Hot? Too Cold?: Keeping Body Temperature Just Right

Overview

Have you ever wondered why you shiver when you’re cold, or sweat when you’re hot? It may seem natural that emperor penguins huddle together to stay warm in the Arctic, but why exactly does this prevent them from freezing? Is your dog just out of breath when he pants after running around outside, or does panting actually help him to cool down? In TOO HOT? TOO COLD?, Caroline Arnold, acclaimed author of nonfiction for young readers, answers these questions and more.

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Overview

Have you ever wondered why you shiver when you’re cold, or sweat when you’re hot? It may seem natural that emperor penguins huddle together to stay warm in the Arctic, but why exactly does this prevent them from freezing? Is your dog just out of breath when he pants after running around outside, or does panting actually help him to cool down? In TOO HOT? TOO COLD?, Caroline Arnold, acclaimed author of nonfiction for young readers, answers these questions and more.

In clear and concise writing, readers will discover the many different ways humans and animals adapt to heat and cold. The book includes a straight-forward explanation of cold-blooded and warm-blooded animals, and young science enthusiasts will be amazed to learn how remarkably similar animals and humans are when it comes to keeping their body temperatures just right.

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Editorial Reviews

Children's Literature - Phyllis Kennemer
Warm-blooded animals, including humans, can control their body temperatures. They can keep their temperatures constant even when the weather conditions around them change. In contrast, the body temperatures of cold-blooded animals, such as reptiles and amphibians, vary with their surroundings. Body functions that adjust temperatures in mammals, such as sweating and shivering, are described. Some animals, such as polar bears, whales, and dolphins, have layers of fat to protect them from the cold. Body sizes, shapes and habits protect animals from extreme temperature variations. Some animals hibernate during winter months to preserve energy; others migrate between warm and cool climates. Living beings function best within a certain temperature range. If an animal gets too hot or too cold, its body processes do not work properly. Softly colored, realistic illustrations add interest and meaning to the informative text. A glossary and author's note also contribute to understanding. A good choice for young researchers. Reviewer: Phyllis Kennemer, Ph.D.
Kirkus Reviews
A fascinating and thorough look at how both animals and humans regulate their body temperatures. Beginning with the difference between warmblooded and coldblooded species (the terms endothermic and ectothermic are introduced but not used), Arnold devotes spreads to such topics as muscle movements, sweating, the shrinking and expanding of blood vessels in the skin, fat, body coverings, and the size and shape of an animal. Behavior can also affect body temperature: animals or humans can seek/avoid the sun or a breeze, cool off or warm up with water, find shelter, or hibernate/estivate/migrate. The one misstep is a minor quibble--a sentence incorrectly states that "No animal can live if its body temperature falls below freezing." The copyright page lists the illustrations as having been done in watercolor and Photoshop, but readers would be hard-pressed to see any evidence of digital artwork here. The spreads and spot illustrations have that blurry, batik quality of watercolors that lends itself so well to nature scenes, while the insets are well-delineated, allowing readers to understand the structures discussed in the text. Every animal is labeled, making this a great jumping-off point for further research into readers' favorites. A glossary and author's note round out the text. A stellar addition to a rather empty shelf. (Nonfiction. 6-10)
School Library Journal
Gr1–3—This well-organized title uses a picture-book format to take a relatively boring concept-temperature regulation in people and animals-and make it downright interesting. Arnold touches on all aspects of the subject, from the internal (fevers, muscle contraction, goose bumps, sweating) to the external (sunbathing, burrowing, hibernating, migrating). The text is clear and readable, and the design includes plenty of white space to avoid overwhelming readers. The illustrations, though appealing, feature muted tones that are unlikely to grab readers' attention. The lack of an index or table of contents lessens the book's usefulness for reports.—Kathleen Kelly MacMillan, Carroll County Public Library, MD
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Product Details

  • ISBN-13: 9781580892766
  • Publisher: Charlesbridge Publishing, Inc.
  • Publication date: 2/1/2013
  • Pages: 32
  • Age range: 6 - 9 Years
  • Lexile: IG910L (what's this?)
  • Product dimensions: 11.20 (w) x 8.60 (h) x 0.50 (d)

Meet the Author

Caroline Arnold is the award-winning author of more than one hundred and forty books for children, including WIGGLE AND WAGGLE, A WARMER WORLD, and TOO HOT? TOO COLD?: KEEPING BODY TEMPERATURE JUST RIGHT. She lives in Los Angles, California.
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