Gr 6-10-This set is well suited for students researching brief reports but too dry for those pursuing personal interests. Each volume presents one major area of study including minerals, rocks, fossils, earthquakes/volcanoes, plate tectonics, and human use of earth resources. Given the close relationship between some of these topics (e.g., plate tectonics and earthquakes and volcanoes), there is surprisingly little overlap. One major omission from the Landforms volume is mention of how river valleys are formed. On the other hand, Geological Time presents an exceptionally clear account of how scientists learn geological history by observing rock formations. Like many reference sets, this one relies heavily on clear, informative, and colorful photographs and diagrams to convey important information. Unfortunately, the illustrations are not always well keyed to the text. The effective, helpful captions are indexed. There is no bibliography or list of sources. The information here is no more detailed than that presented in The World Book Encyclopedia of Science (1999) and The New Book of Popular Science (Grolier, 2000), both of which are written in a more engaging style. Thus, this is a useful supplement but does not replace those standard works.
Jonathan Betz-Zall, City University Library, Everett, WA
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