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Big Picture

Spider Canyon

Frozen Alive

Ultimate Speed

Hidden Depths

High Anxiety

Viewer Challenge
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TEACHING GUIDES


GOING TO EXTREMES: Viewer Challenge



Watch SCIENTIFIC AMERICAN FRONTIERS Show 704, "Going to Extremes," and test your knowledge by answering these questions:

SPIDER CANYON

1. How does the female funnel web spider identify its prey?

2. The hybrid spider offspring of aggressive males from the desert and the less aggressive spiders from the river are:
a. very timid.
b. super-aggressive.
c. not very bright.
d. confused.


FROZEN ALIVE

3. What enables the winter flounder to survive the cold temperature of sea water?

4. What chemical enables the wood frog to freeze and thaw?
a. glucose
b. glyceric acid
c. glycerol
d. nitroglycerin


ULTIMATE SPEED

5. When the cheetah is running, it gets extra power from energy stored in its:
a. legs.
b. feet.
c. muscles.
d. back.

6. How do pronghorn and cheetah differ in the ways they run?


HIDDEN DEPTHS

7. What is "marine snow"?

8. The ocean at the middle depths contains low levels of (choose two):
a. oxygen.
b. phosphorus.
c. nitrogen.
d. light.


HIGH ANXIETY

9. The air at high altitudes causes problems for climbers because it contains:
a. less nitrogen.
b. more oxygen.
c. less oxygen.
d. more carbon dioxide.

10. What is the most dangerous time on the mountain for climbers susceptible to altitude sickness?




Check your answers to "Going to Extremes" Viewer Challenge









 

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