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图书馆 | 资料类型 | 排架号 | 子计数 | 书架位置 | 状态 | 图书预约 |
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正在检索... Branch | Juvenile Book | J 551.21 HARRISON | 1 | Stacks | 正在检索... 未知 | 正在检索... 不可借阅 |
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摘要
摘要
Tremendous forces are at work below the earth's surface. Sometimes they make the ground rumble and shake. Other times they make mountains explode, spewing forth rock, gases, and lava. These mountains are called volcanoes. They are among nature's most spectacular creations--and one of its most dangerous. David L. Harrison takes us on a fascinating voyage beneath the earth's surface to show how volcanoes are created and why they erupt. From its hot, solid iron core, up to the earth's crust, he introduces us to magma, lava, the colliding plates that cause earthquakes, and other natural phenomena. With vivid illustrations by Cheryl Nathan, here is a look at how volcanoes work.
评论 (4)
《学校图书馆杂志》(School Library Journal)书评
Gr 2-3-In clear text and simple pictures, the author and illustrator offer a look at volcanoes and the forces at work deep beneath the earth. The book addresses basic questions such as how rocks get so hot that they melt and what causes a volcano. A colorful diagrammatic look at the four layers of the earth is followed by a fundamental explanation of plate tectonics. Passing mention is made of Mount St. Helens and the eruption of Mount Vesuvius in A.D. 79. An author's note offers slightly more in-depth material. It's unfortunate that there is no glossary, but the book is still a fine addition to libraries and a good jumping-off place for further exploration.-Dona Ratterree, New York City Public Schools (c) Copyright 2010. Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.
《儿童读物杂志》(Horn Book)书评
Simple yet conceptually rich sentences combine with colorful movement-and-light-filled artwork to introduce young readers to this natural phenomenon. Harrison anchors his discussion of volcano formation and characteristics in an explanation of plate tectonics. While this allows for the inclusion of sophisticated information, the necessary simplifications could underscore common misconceptions. Bib. From HORN BOOK Spring 2003, (c) Copyright 2010. The Horn Book, Inc., a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.
Kirkus评论
A first look at volcanoes by the author of Rivers: Nature's Busy Waterways (p. 412). Here the author tries to explain what volcanoes are, where they are found, how they form, and what happens when they explode. He states: "Every day somewhere volcanoes erupt. From far off they look like beautiful fireworks. But up close, a volcano is no fun." The illustrator avoids that understatement showing a lurid double-page spread of a fiery, red-orange, erupting volcano, followed by a double-page spread of catapulting rocks and smoke. Harrison has a difficult time making the text clear, accurate, and accessible. For example, he states: "If too much gas is trapped inside, part of the mountain may blow off, hurling rocks heavier than elephants for miles." But not all mountains are volcanoes, and how does the gas get trapped inside? Rocks bigger than elephants hurled for miles? Sometimes, the text doesn't seem to make sense, for example: "Most magna moves toward the crust where it cools and sinks again. But some magna breaks though weak spots by rising through cracks like chimney flues until at last it bubbles or blasts free onto the surface." Why does it move toward the crust? Why does it cool when it moves toward the crust? Why does it sink? What are chimney flues? This title will lead to more questions than answers. Curious readers should look elsewhere. (Nonfiction. 7-9)
《书目》(Booklist)书评
Gr. 1^-3. This colorful book from the Earthworks series captures the beauty and violence of volcanoes and explains the more fundamental, earth-shaking events underlying the dramatic pyrotechnics. Harrison, who also wrote Rivers [BKL Ap 1 02] and Caves (2001) for the same series, first describes volcanic eruptions, then explains why, where, and how they happen. The surprisingly graceful text is illuminated with dynamic artwork by Nathan, who illustrated Rivers and Caves. Here the expressive compositions, rich in color and subtle texture, serve as literal scenes of what's happening on the earth, and there are plenty of cross sections and diagrams of what's happening beneath the earth's crust. A good book to read aloud to primary-grade students. --Carolyn Phelan