Challenge Question #1
ISELIN MIDDLE SCHOOL (firstname.lastname@example.org)
Fri, 14 Mar 1997 13:35:15 +0000
Sonar is the way bats find their way by echo location. They
use this technique to navigate even in the dark. The bats
send sound waves and these waves reflect off objects and
bounce back to the bats.When the waves come back the bats
can tell where to go.
Iselin Middle School, Iselin N. J.