The longest days of the year in the Northern Hemisphere are experienced during the
A) time of 24-hour days at the South Pole.
B) vernal equinox.
C) winter solstice.
D) autumnal equinox.
E) time that the Sun is directly overhead at the Tropic of Cancer.
E
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A city is located at sea level. From the ground to 200 meters altitude, the temperature decreases by 3°C. From 200 meters to 400 meters altitude, the temperature remains constant. Therefore, the mixing depth is ____ meters thick
A) 0 B) 200 C) 400 D) 600
Thermohaline circulation is ________
A) deep circulation of water driven entirely by cold, saline water descending to the ocean floor at the poles and flowing along the bottom of the ocean B) the circulation that occurs in shallow, evaporate basins when salt begins to crystallize, releasing heat by latent heat of fusion and heating the water mass, forcing shallow convection in the water column C) deep circulation of water driven by a combination of cold temperature and high density related to high salinity from formation of sea ice, producing descending high density waters that flow southward to equatorial regions D) shallow circulation at low latitudes driven by surface evaporation making seawater more dense, which then sinks and drives upwelling
Even before the proposal of continental drift, paleontologists recognized that some sort of land connection was needed to account for the identical fossil organisms found on multiple continents
Select the correct hypothesis or hypotheses these paleontologists developed. A) Sea level falling B) A chain of island stepping stones C) Floating debris used as rafts and sea level rising D) A transoceanic land bridge E) Island stepping stones, transoceanic land bridge, and floating debris used for rafts
What is the only substance to have a higher heat capacity than liquid water?
a. acetone b. gasoline c. ammonia d. ice e. alcohol