Presents a directory of earth-science societies for 1979 which includes a list of professional organizations. (HM)

The last two decades of collecting evidence to support the plate tectonic theory is reviewed. Discussion also involves how other terrestrial plants show evidence of once having been hot but with long-term stability and no continuing convection. (Author/SA)

Discussed is the earth's gravity and its geological significance. Variations of gravity around the earth can be produced by a great variety of possible distributions of density within the earth. Topics discussed include isostasy, local structures, geological exploration, change of gravity in time, and gravity on the moon and planets. (DS)

Presents two sets of astronomy activities for elementary students: (1) constructing scale models of the solar system which depict relative distances and diameters, and (2) demonstrating the effects of factors responsible for the seasons. (WB)

Describes two occasions where television has been used to record a series of tutorials in mathematics and earth science to improve the performance of those conducting the tutorials. The opportunity for playback, analysis, and discussion with colleagues was especially valuable. (Author)

Describes a process by which prints are produced using thin sections as negatives in a photographic enlarger. Design of a thin section holder, exposure times for common rock types, and several sample illustrations are provided. (Author/MA)

A two week, 3,000 mile, geology field trip for secondary school earth science students through New England is discussed. Student expenses, preparation details, accommodations, meals, transportation, course credit, and fieldwork are considered. A detailed trip itinerary is included. (BT)

Describes (1) several methods used in earthquake research, including P:S ratio velocity studies, dilatancy models; and (2) techniques for gathering base-line data for prediction using seismographs, tiltmeters, laser beams, magnetic field changes, folklore, animal behavior. The mysterious Palmdale (California) bulge is discussed. (CS)

Earthquakes are in the news and kids are asking questions. Here's a multilevel primer to help teachers answer them. (Editor/RK)

Describes a constructivist approach to teaching about the phases of the moon. Addresses student misconceptions and encourages students to focus on the causes of the phases of the moon. (JRH)

Presents simple laboratory experiments to help students understand the principle of buoyancy and mass balance. Buoyancy experiments can simulate lithospheric mass balance, crustal loading and unloading, and can be used to model differences between the oceanic and continental lithosphere. (MKR)

Presents a problem-solving investigation on coal mining that integrates science and mathematics with geology. Engages students in a scenario in which they play the roles of geologists and mining engineers. (NB)

Demonstrates ways that earth science understanding can be shown through creative writing. Discusses the effects of writing on students' conceptual understanding of earth science. Suggests a sample rubric for evaluating student learning. (KHR)

Highlights the unanswered questions of science. Summarizes current leading research that demonstrates that those questions are inherently limited in scope, and the chain of discovery and human curiosity that drives the quest for knowledge shows not the slightest sign of ending. Argues that we have yet to recognize and ask many of the most profound…

Describes a scavenger hunt activity that has been used successfully with middle school students in an earth science course. This activity includes items that call for library research rather than the collection of objects, emphasize real-world connections, are skill-oriented, ask for originality and creativity, and are just for fun. (JRH)