Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS
SAF Archives  search ask the scientists in the classroom cool science

Guide Index

Big Picture

Echoes in the Night

Rat Soup

Bee Lines

Champion Chompers

Bridge That Changed the World

Viewer Challenge
in the classroom
TEACHING GUIDES


EXPEDITION PANAMA:
Viewer Challenge Quiz


Watch Scientific American Frontiers Show 801: Expedition Panama, and test your knowledge by answering these questions:

ECHOES IN THE NIGHT

1. What sense do bats seen on Frontiers primarily use to find their prey?
a. touch
b. smell
c. sight
d. hearing
2. Why can't humans hear bat calls?

RAT SOUP

3. How was Barro Colorado Island created?

4. How are scientists at the rain forest pilot project getting rid of the aggressive grass? (choose 2)
a. spraying with herbicide
b. planting fast-growing bean trees
c. cutting it down
d. replacing with genetically engineered grass
BEE LINES

5. The Panama bees featured in the story are distinctive for all of the following reasons except:
a. they are stingless
b. they don't make honey
c. they are selective about nests
d. they communicate about height
6. How do the bees in the story communicate information?

Bridge That Changed the World

7. About how long did it take the Isthmus of Panama to form?
a. 18 million years
b. 4 million years
c. 14 million years
d. 20 million years
8. Identify at least two consequences of the formation of the Isthmus of Panama.

CHAMPION CHOMPERS

9. Scientists calculate that the leafcutter ants devour what percent of the forest foliage each year?

10. What happens to the leaves that the ants bring back to their nest?
a. The ants eat them.
b. The ants use them to mark trails.
c. Fungus grows on them.
d. The leaves are used to make nests.


I WANT TO SEE THE ANSWERS TO THE
EXPEDITION PANAMA VIEWER CHALLENGE





 

Scientific American Frontiers
Fall 1990 to Spring 2000
Sponsored by GTE Corporation,
now a part of Verizon Communications Inc.