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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?
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- 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?
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- 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?
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HIDDEN DEPTHS
- 7. What is "marine snow"?
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- 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?
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Check your answers to "Going to Extremes" Viewer Challenge
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Scientific American Frontiers
Fall 1990 to Spring 2000
Sponsored by GTE Corporation,
now a part of Verizon Communications Inc.
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