How well did you do with our weather quiz ? Here are the answers to the 10 questions on page 167:

1. ;FALSE. Hair is responsive to humidity and is used in some kinds of hydrometers. When the hairs of the scalp felt alive and springy, the Indians could count on good weather; when the hairs felt soft and lifeless, rain was not far off.

2. ;TRUE. A red rising sun is shining through air filled with particles of dust. These will serve as nuclei for drops of water in the uneven heating of the day.

3. ;TRUE. Fluid rises because of the weight of a mountain of air-a high-pressure area that brings good weather.

4. ;TRUE. Swallows fly low before rain, probably hunting insects made wing-heavy by moisture in the air.

5. ;FALSE. Dew is favored by a cloudless sky with good weather ahead.

6. ;TRUE. Cumulus clouds gathering into large, dark groups usually herald the birth of a cumulo-nimbus, or thunderhead.

7. ;FALSE. Halos are caused by light shining through ice cloudform, usually marking the advance of a warm front-with rain.

8. ;FALSE. Low-pressure areas tend to move toward the east. Only lightning from the west, northwest, and southwest is likely to mean a storm headed for the observer.

9. ;TRUE. Smells held captive by high-pressure air are released and carried abroad when a "low" approaches.

10. ;FALSE. A red sunset is caused by sunlight shining through dry, dusty air-the natural condition at the end of the day when fair weather is ahead.