Challenge Question #1

Wed, 16 Apr 1997 09:53:45 -0800

Sonar is a divise used to locate objects, measure there distance there speed, and direction. To do
this sonar uses sound and energy. People like to associate sonar with the devices used to detect
submarines and many other underwater objects.Peoplre also associate sonar with burglar alarms.Sonar
is a technique like echolocation bats and dolphins both use.There is two types of sonar activeand
and bats use passive.
Kenai Peninsula Borough School District
148 N. Binkley
Soldotna, Alaska 99669