AIR AND OTHER GASES
Windows or Macintosh CDROM
Examines the composition of air, gases and pressure, commercial gases, and maintaining air quality. Lesson one looks at air as a mixture of gases and examines the particles which make up those gases. Lesson two explains how air supports life, how gases cycle through Earth's environment and how organisms relate to atmospheric gases. Commercial gases are explored in lesson three and users learn how air pressure and gases are used for fuel and in industrial processing. It also examines the hazards of many commercially useful gases. With this knowledge, students can move into lesson four which looks at the effects of gaseous pollutants in the air and what can be done to maintain air quality. Methods of detecting pollutants and determining mass and weight are also outlined. Price: $199.95