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)

Examines the phenomenon of water drops that float on water at room temperature. Describes experiments that have been done to study this phenomenon. (MA)

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

Describes the general thrust of deep-sea microbiology research. Discusses the existence of deep-sea food chains. (CP)

Procedures for using soap films to determine the shortest series of lines connecting several points. (CP)

Describes how a sulfate-iodide "clock reaction" experiment can be used to emphasize the importance of observations and hypotheses in revealing cause-effect relationships. Investigative steps, theory, experimental principle, procedure, and the experiment report are discussed. (CS)

Presents seven notes on new equipment, techniques, or materials of interest to teachers of physics. A circuit of a low-cost computer terminal to audiovisual device interface, and a demonstration of the buoyancy of air are among notes presented. (HM)

Using syringes, a hydraulic press was constructed and mechanical advantage and efficiency were calculated. (CP)