Bay Journal

Rain Brains!

  • By Kathleen Gaskell on April 19, 2014
 (Dave Harp)

“Some people walk in the rain; others just get wet.” – Roger Miller
This month’s quiz is sprinkled with rain questions. Answers are on page 28.

1. Falling raindrops have been recorded at speeds up to 35 kilometers per hour (about 22 miles per hour). What is the average speed of a falling raindrop?
A. 4–6 kph (about 2.5–3.7 mph)
B. 6–8 kph (about 3.7–5 mph)
C. 8–10 kph (about 5–6.2 mph)
D. 10–12 kph (about 6.2–7.5 mph)

2. What factor(s) affect the speed of a falling raindrop?
A. Its size
B. Where it is falling
C. Wind speed
D. All of the above

3. Water falling from a cloud must be larger than 0.5 millimeters in diameter (about 0.02 inches) to be called a raindrop. What do we call water falling from the sky that is smaller than 0.5 mm?
A. Drizzle
B. Fog
C. Haze
D. Mist

4. Every second, the volume of water that evaporates from the Earth’s surface is equal to the amount of water raining back on Earth. What is the estimated weight of this water cycle?
A. About 16 million tons
B. About 18 million tons
C. About 20 million tons
D. About 22 million tons

5. Both Harper’s Ferry (1753) and Harrisburg (1786) recorded pumpkin floods. What were these pumpkins floods?
A. These floods occurred on Halloween
B. Runoff from these floods caused the water to turn orange.
C. These floods washed away large numbers of pumpkins from American Indian fields and carried them downstream.
D. The extra water caused a bumper crop of extra large pumpkins.

6. The greatest amount of rainfall recorded in one minute on Earth took place in Unionville, MD, on April 7, 1956. How much rain fell?
A. 1.12 inches
B. 1.23 inches
C. 1.34 inches
C. 1.45 inches

7. The side of a mountain that faces the most wind is called the windward slope. The other side that faces away from most wind is called the leeward slope. As a rule, one of these slopes receives a lot of rainfall, while the other receives considerably less. Which is which?
A. Windward slope receives heavy rain; leeward slopes receive little rain.
B. Windward slope receives little rain; leeward slopes receive heavy rain.

Answers

1. C
2. D
3. A
4. A
5. C
6. B
7. A

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About Kathleen Gaskell

Kathleen A. Gaskell, the layout & design editor for the Bay Journal, has been involved with several environmental programs for children.

Read more articles by Kathleen Gaskell

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