
1. A geographical location has an Arctic climate if:
A. It is located north of the Arctic Circle.
B. Its July mean temperature is 10 C or less.
C. It is located in Alaska.
D. Its ocean freezes in the winter.

2. The term isotherm refers to:
A. A line on a map connecting all points with the same temperature.
B. A line on a map marking the limits of sea-ice extent.
C. A device used to keep substances at room temperature.
D. A line on a map marking the boundary between cold and warm ocean currents.

3. The distance from Antarctica to the nearest continent is about:
A. 100 Kilometers.
B. 1,000 Kilometers.
C. 5,000 Kilometers.
D. 10,000 Kilometers.

4. Which of the following statements is NOT supported by this data?
A. Antarctica covers an area larger than the U.S.A. and Mexico combined.
B. Antarctica almost doubles in size with the addition of all the sea ice.
C. The U.S.A. is larger than Antarctica.
D. Mexico is smaller than Antarctica.

5. Based on this graph, which of the following observations is NOT true?
A. In March, Barrow has more than 10 hours of daylight.
B. In July, the sun will still be visible in the sky at midnight.
C. January is the month with the maximum number of daylight hours.
D. In December, the sun never rises above the horizon in Barrow.

6. Which of the following conclusions is supported by her data?
A. Sandy consistently observes a temperature lower than the local forecaster's.
B. Sandy forgot to measure the temperature on Day 1.
C. Because Sandy and the local forecaster measure different temperatures, one of them must be wrong.
D. The sky was clear on Day 2 and Day 4, but cloudy the rest of the time.

7. The data reported here is:
A. Climate data for Juneau.
B. 30-year average temperatures.
C. Weather data for Juneau.
D. Weather data for a city in Canada
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8. If the transport of heat from the equator to the poles were to stop, which of the following would likely happen?
A. The polar caps would melt.
B. Icebergs would form near the equator.
C. The oceans would evaporate and disappear.
D. Polar regions would be colder, and the tropics warmer, than they are now.

9. In these surface types, the order of albedos from greatest to least would be:
A. Thick Clouds, Tundra, Old Snow, Glacier Ice.
B. Thick Clouds, Glacier Ice, Tundra, Old Snow.
C. Old Snow, Thick Clouds, Glacier Ice, Tundra.
D. Thick Clouds, Old Snow, Glacier Ice, Tundra.

10. Which of the following conclusions is supported by Dr. Keeling's data?
A. CO2 levels in Hawai`i have not changed between 1974 and 1999.
B. The annual average CO2 in Hawai`ii has been increasing steadily since 1975.
C. CO2 levels in Hawai`i double every 20 years.
D. The trees in Hawai`i are dying.