The ocean is home to some of Earth's most important producers. Single-celled organisms in the ocean are responsible for more than half of Earth's productivity, as well as most of its oxygen. Phytoplankton are single-celled, plantlike organisms. That is, they have chloroplasts and perform photosynthesis, but are not true plants, which are typically…

This book provides information to help create a themed science fair for childen in grades 4-6. Illustrated instructions and checklists for each of the 100 plus experiments are provided, plus ideas for teachers and students to vary experiments for additional scientific discovery. The experiments are written in age-appropriate language so that…

With the use of graphs, the phenomenon of deep ocean water mixing is discussed. Research methodologies and findings are detailed. (CP)

Analyzes the distributions of particles and particle flux in the Atlantic Ocean. (CP)

Detailed descriptions are given of two procedures for measuring the radius of the earth, one using a rule and the other a stopwatch. (MP)

Discusses the origin and existence of sediment layers in the Atlantic Ocean. (CP)

Featuring an increased emphasis on the way today's changing science and technology is shaping our culture, this Second Edition of "Teaching Science in Elementary and Middle School" provides pre- and in-service teachers with an introduction to basic science concepts and methods of science instruction, as well as practical strategies for the…

The mixing of sediments by organisms (bioturbation) is discussed. Research techniques are discussed and data on Atlantic bioturbation rates are provided. (CP)

Introduces a range of simple ideas about soil physical properties using a minimum of apparatus. (MKR)

Presents five hands-on activities that allow students to detect, measure, reduce, and eliminate moisture. Students make a humidity detector and a hygrometer, examine the effects of moisture on different substances, calculate the percent of water in a given food, and examine the absorption potential of different desiccants. (MDH)

Describes a geology laboratory exercise involving weathering and topographic maps which allows students to put knowledge to practical application. (SL)

Describes methods using basic trigonometry which enable secondary earth science students to make astronomical calculations. The literature and mathematics available to high school students allow calculation of the earth's dimensions, which in turn permit calculation of the sun's distance. Once the sun's distance is known, stellar distances can be…

Discusses the atmospheric characteristics of the earth and their implications for the development of life on earth-like planets. Indicates that the chance of life developing on other planets is not as great as men might have thought. (CC)

Describes the stages and outcomes of a junior high school science lesson on erosion and deposition utilizing a "kids as researchers" theme. Stages include awareness, discussion, investigation, experimentation, generalization, and extension. (SK)

Discusses use of the fine-beam cathode-ray tube to investigate strength and direction of the earth's magnetic field, simulating discussion between student and teacher as the equipment is set up and the experiment done. Provides diagrams and illustrative photographs to aid in equipment set-up and measurement. (JM)