Problems concerning energy shortage are presented along with possible solutions. Three important areas of concern are (1) energy-origin and uses, (2) environmental effects of energy use, and (3) resources and new sources. (DF)

Discusses the theory, formation, and properties of the black holes, nature's dark stars. The connection between black holes and thermodynamics is also discussed. (HM)

Describes an experiment in which the final speed of a toy car is predicted by measuring the elastic potential energy stored in its spring at the start and the energy lost to friction during the run. Conservation of energy is discussed and the necessary mathematical formulas are presented. (BC)

Gives a brief descriptive review of the life of Albert Einstein, his scientific papers and his valuable contributions to physics. (BA)

Describes a series of activities for demonstrating the conditions necessary for burning (fuel, oxygen and temperature) plus several related phenomena. (CP)

Examines the interest level of Chilean students in physics and technology in light of unacceptable performance levels in these areas. Relevant thermodynamics problems applicable to students' daily lives generated more interest. Discusses the importance of presentation to student acceptance of the curriculum. (AIM)

Demonstrations to help students change their misconceptions about chemical bond breaking are presented. Students' misconceptions about chemical bonds in both biological and chemical systems are discussed. A calculation for the release of energy from respiration is presented. (KR)

The outline for a unit on the chemistry of fitness and nutrition is presented. Topics discussed include the organic basis of life, functional groups, kitchen experiments, micronutrients, energetics, fitness vs. fatness, current topics, and evaluation. This unit reviews the basic concepts of chemical bonding, acid-base chemistry, stoichiometry, and…