Intense radiation at microwave frequencies is emitted by certain nebular regions and stellar atmospheres. It is generated by maser action, which does for microwaves what laser action does for light. Describes in detail the types of masers and their action. (Author/MA)

Discusses sediment drift patterns on the North Atlantic Ocean floor. Includes photographs and a discussion of the wide variety of sediment formations. (CP)

A knowledge of Latin, Greek, and modern foreign language prefixes and suffixes often enables one to define a word without using a dictionary. A list of certain common geologic terms and their etymologies is provided. (Author/MA)

Advocates that instruction in petrology be based more on the observable physical characteristics of rock formations rather than being a study of geologic history. (CP)

Introduces the concept of Geographic Information Systems (GIS) as an approach for integrating and synthesizing disparate information for use in the secondary geography and earth science curriculum. Reviews basic concepts and instructional approaches to familiarize teachers with the relative simplicity of GIS implementation. (Author/GEA)

Presents and review six books. Topics include earth science topics (Philip R. Holzinger, 1985), the wild horse controversy (Richard Symanski, 1985), historical Dutch geography (Audrey M. Lambert, 1985), urban geography (Susan L. Cutter, 1985), a geopolitical atlas (Gerard Chaliand and Jean-Pierre Rageau, 1985), and remote sensing (Robert K. Holz,…

Although the concepts taught through physics and chemistry are very important, those taught through earth science are perhaps even more readily applicable for many rural students. (Author)

A National Research Council committee recently concluded that atmospheric carbon dioxide levels will "most likely" double by late in the next century, causing an increase in the earth's average temperature. Effects of the increase on sea levels, global climate, and other parameters are discussed. (JN)

This textbook is a primary-grade geography course. It presents the idea of direction and helps children form definite conceptions of the natural divisions of land and water through the aid of pictures and diagrams. Clear and beautiful maps in color, unencumbered with names not referred to in the text, are introduced, not as mere illustrations, but…

Describes the causes and effects of earthquakes, defines the meaning of magnitude (measured on the Richter Magnitude Scale) and intensity (measured on a modified Mercalli Intensity Scale) and discusses earthquake prediction and control. (JR)

How this energy source was created, its meaning to mankind, our drastically reduced supply, and why we cannot wait for nature to make more are considered. Today fossil fuels supply 96 percent of the energy used but we must find alternate energy options if we are to combat the energy crisis. (BL)

Copernicus remains the symbol of the scientist who felt responsibility for the possible conquences of his discoveries and who valued free thought and scientific truth. (Author)