This issue of Exploratorium Magazine focuses on microbes. Different types of microorganisms are introduced based on their living environments or whether they are harmful or beneficial. Contents include: (1) "It's a Small World" (Blake Edgar); (2) "The Human Body: A Complex Ecosystem" (Nik Walter); (3) "The Hills That…

Describes the eruption of inflammable natural gas from the ground surface in the Edith area near Camp Houston. Determining the source of the gas, the results established the Chester-Oswago interval as the most likely source. The surface venting has declined steadily; the likelihood of finding its cause is also described. (SK)

A direct and definitive response to the creationist Noah's ark arguments is presented in this publication. Although the Bible is used as a constant reference point, the author does not engage in biblical criticism. The critique is rather directed at the leading creationist books and experimental studies that seek to scientifically prove that the…

Describes eruption steps in Mt. St. Helens' top surface deformation: constant shaking of earthquakes, minor steaming from vents, and sudden catastrophic eruption. Explosions caused black projectile-laden ash clouds, vertical white steam clouds, and vertical gray ash-laden clouds. (SK)

Designed to serve as a complement to the Unesco Technical Papers in Marine Science, this report concentrates on theoretical and practical problems of geological mapping of the sea floor. An introduction is given to geological mapping procedures at continental margins as well as some practical recommendations taking as an example the African region…

Abstracts and abstractors' critiques of six research reports related to preservice teacher education and instruction are presented. Aspects addressed in the studies include: (1) teaching strategy analysis models in middle school science education courses; (2) concerns-based adoption model (CBAM): basis for an elementary science methods course; (3)…

Suggested are methods for the collection of field evidence about processes that form plutonic and metamorphic rock. Description and discussion of these types of rocks are provided. The planning and execution of a successful field trip is discussed. Advanced field projects are also discussed. Included are five appendices, references, and a…

Presented is the study of sequences of rock layers as the basis for historical geology. Also considered is the influence of rock layers on the appearance of the landscape. Specific relevant laws of geology are presented. Preparation for a field trip is discussed. An example field trip is discussed and field techniques and projects are reviewed.…

The causes for many of the colors exhibited by minerals are presented to students. Several theories of modern physics are introduced. The nature of light, the manner in which light interacts with matter, atomic theory, and crystal structure are all discussed in relation to the origin of color in minerals. Included are color pictures of many…

Ranger Rick's NatureScope is a creative education series dedicated to inspiring in children an understanding and appreciation of the natural world while developing the skills they will need to make responsible decisions about the environment. The topic of this issue is "Geology: The Active Earth." Contents are organized into the…

This guide introduces the study of fossils and means through which this study may provide clues to ancient environments and geology. Presented are discussions about the origin of many types of organisms, origin of organic communities, evolution, and extinction of species. Suggestions are provided for likely collection sites, methods of collection,…

These resource magazines for K-6 educators are published to promote the teaching of science, mathematics, and technology through participatory, inquiry-based methods. Each issue provides resources and hands-on activities for educators that focus on one theme. Issues in volume 5 cover the themes of geology, math and science integration, tropical…

Discussed are the importance of soil to plant and animal life, the evolution of a soil profile, and the major kinds of soil in the United States. On a suggested field trip, students examine different kinds of soil profiles; they also measure soil acidity and water-holding capacity. Suggestions for further study are provided along with references…

Attention is directed to processes going on in lakes which are not apparent to the observer of their scenic beauty. Explored are the lifetime of lakes, how lakes are formed, elements of a field trip to a lake, and influence of human activities on lakes. Sample post-field trip questions, references, and a glossary of terms are also included. (RE)