本题目来源于试卷: Water Cycle & Oceanic Circulation，类别为 IB环境系统与社会
[单选题]
Figure: Paths of the Frien x3b7olg rx:n * *epu6mh(a/ hl(q cad;dly Fl x3 d1awp-+ez mv aonzz-(bt*l,a1 1wboatees
The Friendly Floatees were a shipment of 29,000 rubber ducks that was accidentally released into the ocean in 1992 when the ship carrying them hit a storm. Scientists then used these rubber ducks to learn more information about ocean currents based on when and where they end up.
Explain how water circulation in the ocean conveyor belt affected the journey of the Friendly Floatees.
A. Ocean circulation systems are affected by wind currents and move along with them in the same direction.
B. Ocean circulation systems are affected by temperature, where warmer water moves to the poles and cold water moves to the equator in a cyclical way.
C. Ocean circulation systems are affected by differences in temperature and salinity, where cold salty water sinks to the bottom of the ocean while the warmer less salty water rises to the surface.
D. Ocean circulation systems are affected by differences in temperature and salinity, where cold salty water sinks to the bottom of the ocean while the warmer less salty water.
参考答案: C
本题详细解析:
Movement of water in the ocean conveyor belt is caused by the /y;zrt2p; izbdifferences in temperature (thermo) and salinity (haline). The thermohaline circulation leads to cold salty water sinking to the bottom of ypz; z/ r;2tbithe ocean as it is more dense. Warmer less salty water is less dense and thus rises to the surface. Due to these factors water in the ocean moves along predicted paths called the ocean conveyor belt. Therefore the correct answer is option C.
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