Wednesday, January 23, 2008

The Water Cycle

Answer the questions below and then click "submit" to send your answers.
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1. What is the difference between climate and weather?

Your answer:
a. There is no difference.
b. Climate refers to weather conditions for a region over a period of time.
c. Weather refers to climatic conditions for a region over a period of time.
d. Climate is the location of the weather conditions at a particular time.



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2. Earth is not the only planet that exhibits weather conditions. What is required for a planet to support weather systems?

Your answer:
a. a surface
b. a moon
c. an atmosphere
d. existing life



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3. If it is winter in the Northern Hemisphere, what season is it in the Southern Hemisphere?

Your answer:
a. spring
b. summer
c. fall
d. winter



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4. Why is it common to see snow on very high mountains in the tropics?

Your answer:
a. The circulation of the air blows the cold upward.
b. It occasionally snows in the tropics.
c. The higher the altitude, the colder the temperature.
d. It is colder on the shady side of the mountains.



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5. How does atmospheric circulation influence climate?

Your answer:
a. by producing winds that distribute heat and moisture
b. by producing ocean currents that cause tornadoes
c. by producing tornadoes that cause ocean currents
d. by distributing air that causes wind



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6. From what do clouds form?

Your answer:
a. moisture released from wind
b. air pollution
c. water that has evaporated from the Earth
d. moisture released from rivers



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7. What happens to the water vapor in the air when the air temperature cools?

Your answer:
a. It evaporates.
b. Water droplets form.
c. It dissipates into the air.
d. It turns into a gas.



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8. Forecasters use clouds to help predict the weather. Which of the following may be a reason for this?

Your answer:
a. Certain cloud types appear after storms.
b. There is no other way to predict weather.
c. Certain cloud types often appear before storms.
d. Certain storms come from certain clouds.



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9. What powerful storm can kill more people and destroy more property than any other natural disaster?

Your answer:
a. thunderstorm
b. earthquake
c. lightning
d. hurricane



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10. What do scientists call the circulation of water through the Earth's crust, oceans, and atmosphere?

Your answer:
a. condensation
b. evaporation
c. the water cycle
d. precipitation