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
Under the Law: Arrest and Seize
Under the Law: Arrest and Seize

Our Friend the Policeman
Our Friend the Policeman
Electrical Safety Tips with Safety Man
Electrical Safety Tips with Safety Man

Daughter
Daughter

The Other Half
The Other Half
The Buck Stops Here
The Buck Stops Here

Sunlight Children Matter
Sunlight Children Matter

Rocking Horse Cowboy
Rocking Horse Cowboy
The People on Market Street: Unit #1: Scarcity and Planning
The People on Market Street: Unit #1: Scarcity and Planning

Adults Learning: Boat Building
Adults Learning: Boat Building

Silent Alarm Response
Silent Alarm Response