?What drives ocean currents? Using the Atlantic Ocean as an example, explain how ocean currents distribute heat around the globe.
What will be an ideal response?
?The sun heats up ocean water, especially in the tropics. The rotation of the earth, along with prevailing winds, works to establish surface water currents. Those currents distribute heat to northern Europe and Iceland. The now cooler water sinks and returns along the Atlantic seaboard of North and South America, making a loop into the tropical Pacific. The system works on water temperatures and densities and is driven by the prevailing winds and the earth's rotation.
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Passive solar technologies ________
A) use the energy of sunlight without relying on electrical or mechanical devices B) use mechanical devices to heat water and buildings or electrical devices to generate electricity C) use mirrors to concentrate the sun's rays on a tower or a series of pipes holding water D) use photovoltaic cells to produce light energy E) use silicon wafers to generate light energy
What countries are Russia's major trading partners, as measured by total foreign investment?
A) Great Britain and Germany B) the United States and Canada C) China and Vietnam D) Japan and South Korea E) Australia and New Zealand
Between 1960 and 2009, floods in the United States produced an average of ________ in damage per year.
A. $459,000 B. $66.76 million C. $459 million D. $4.59 million E. $6.76 billion
Consider an iron rod that is 1-m long and expands 1/4 cm when heated. By how much will a 100-m rod of the same material expand when similarly heated?
What will be an ideal response?