SAF Archives  search ask the scientists in the classroom cool science

Guide Index

Why Are Peppers Hot?

Can You Beat Jet Lag?

How Do Bees Fly?

Why Does Traffic Jam?

Sand to Nuts

Viewer Challenge

Transcript for Life's Little Questions

Related Scientific American Articles

Related Sites for Life's Little Questions
in the classroom
TEACHING GUIDES


Life's Little Questions:
Viewer Challenge Quiz


Watch Scientific American Frontiers Show 904: Life's Little Questions, and test your knowledge by answering these questions:

WHY ARE PEPPERS HOT?

1. Among the general population, about how many people are supertasters?

a. 1 in 6
b. 1 in 3
c. 1 in 10
d. 1 in 4
2. How does capsaicin, the compound found in peppers, relieve pain?

CAN YOU BEAT JET LAG?

3. When a person's biological clock is reset, which hormone is affected?
a. estrogen
b. insulin
c. melatonin
d. testosterone
4. In humans, how can the biological clock can be reset?

HOW DO BEES FLY?

5. According to conventional laws of aerodynamics, bees should not generate enough lift to fly. What are two reasons they should not be able to fly?

6. On insects, halteres evolved from a second set of wings and act as:
a. airfoils.
b. gyroscopes.
c. spoilers.
d. rudders.
WHY DOES TRAFFIC JAM?

7. What are two ways city planners can use information from traffic simulations?

8. What is the actual name for the phenomenon that explains mysterious traffic jams caused by one car slowing down?

SAND TO NUTS

9. How do grains of sand behave when they first begin to move?
a. They move slightly apart.
b. They move up.
c. They move down.
d. They move sideways.
10. When coffee spills on a flat surface, where are most of the particles deposited as the liquid evaporates?



I WANT TO SEE THE ANSWERS TO THE
Life's Little Questions VIEWER CHALLENGE





 

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