Uses animated graphics to describe a sonic boom and explain how it is produced. Illustrates how sound waves spread out from a stationary source, as well as from sources moving at different velocities up to twice the speed of sound, and then shows the intersection of a jet aircrafts's sonic boom cone with the ground

Daughter explores the way women are viewed in society by following three female characters on a Frid...
The second of three educational films made by Philip Abbott. A Nelson Company Production for Nationa...
An introduction to the cast of this educational series about Economics, and how desire for more moti...

Educational film for young children about police and their presence in society to help them. Also ai...
Why would a handsome lifeguard stress electrical safety in the home? Because he's a lifeguard for li...
Discusses the problems and processes involved with decision-making. States that the key to decision-...

A seasoned cowboy reminisces about his experiences, challenges, and the changing nature of cowboy cu...