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.…

Highlighted are the effects of weathering through field investigations of the environment, both natural rocks, and the urban environment's pavements, buildings, and cemeteries. Both physical weathering and chemical weathering are discussed. Questions are presented for post-field trip discussion. References and a glossary are provided. (Author/RE)

The study of beaches and their capacity as an interface between land, air, and water is presented. Students investigate shore phenomena to better understand the beach's history and possible future. Also discussed is the interaction between man and the beach, from weather effects to pollution. Laboratory investigations of samples collected from the…

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)

Presented is a teacher's guide to an elementary science unit designed for use with fourth grade, or higher, students in the Trust Territory of Micronesia. Although there is a degree of similarity to curriculum materials developed for the Science Curriculum Improvement Study, this Micronesian unit does not purport to be an adaption or edition of…

This unit is designed to introduce the marine environment to those with little or no previous related background. Students define the marine environment, participate in group discussions, view movies, investigate oil spills, and write environmental impact statements. The first three sessions are designed to take three hours with the composition of…

As part of an updated series of activity oriented educational materials dealing with aspects of the Guam environment, this publication focuses on the common plants and animals found in schoolyards on Guam. Like a field guide, this publication contains descriptions, ecological information, and some historical notes about the common trees, shrubs,…

Because of the problems that have arisen from unsound development of the coastal areas of North Carolina, this publication was written to explain the natural processes of these areas to the layman. This guide provides brief descriptive information on the geomorphology and ecology of sounds, beaches, barrier islands, inlets, dunes, maritime…

This booklet, one of a series developed by the Frederick County Board of Education, Frederick, Maryland, provides an instruction module for an individualized or flexible approach to 7th, 8th, and 9th grade science teaching. Subjects and activities in this series of booklets are designed to supplement a basic curriculum or to form a total…

Educators from around the state, with the help of The Vermont Institutes, developed Science Grade Expectations as a means to identify the content knowledge and skills expected of all students for local assessment required under Act 68. This work was accomplished using the "Vermont's Framework of Standards and Learning Opportunities,"…

This is one of a series of units for environmental education developed by the Highline Public Schools. The unit has been constructed for use by intermediate grade elementary school pupils. The seven lessons are designed to inform students about the land to develop a land ethic. The unit should be able to be completed in two to three weeks. The…

This publication provides a simple explanation of how various processes convert sea or brackish water to fresh water. Included are descriptions of the membrane processes (reverse osmosis, electrodialysis, transport depletion, and piezodialysis); the distillation processes (multistage flash distillation, vertical tube distillation, multieffect…

The treatment of wastewater phosphorus via land application includes both chemical and biological mechanisms. Chemically, phosphorus reacts with iron, aluminum, and calcium compounds in the soil providing efficient removal over a wide range of pH values. Phosphorus is also absorbed by rooted plants which, upon harvest, constitute a further removal…

Drainage for land treatment sites must be evaluated with respect to the purpose the system is meant to achieve. Off-site drainage controls the flow of storm runoff onto the site or groundwater incursion into the soil within the site. On-site drainage is employed for a variety of reasons. These two areas of drainage control must be designed as a…

This module expands on the introductory discussion of nitrogen in other modules. The various chemical forms of nitrogen found in land treatment systems are defined. Inputs from waste application as well as natural sources are quantified for typical situations. A discussion of nitrogen transformations in the soil includes mineralization and…