List several factors that cause salinity to vary from place to place and from time to time
What will be an ideal response?
Variations in salinity are primarily a consequence of changes in the water content of the solution. Processes that add large amounts of fresh water to seawater—and thereby decrease salinity—include precipitation, runoff from land, icebergs melting, and sea ice melting. Processes that remove large amounts of fresh water from seawater—and thereby increase seawater salinity—include evaporation and the formation of sea ice. High salinities, for example, are found where evaporation rates are high. Conversely, where large amounts of precipitation dilute ocean waters, as in the midlatitudes and near the equator, lower salinities prevail.
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A chunk of gooey clay moves with 1 unit of momentum and hits a heavy bowling ball initially at rest. After sticking together, both move with a combined momentum of
A. 1 unit. B. more than 1 unit. C. less than 1 unit. D. not enough information
A given material that is quick to heat up has a
A. high or low specific heat capacity. B. high specific heat capacity. C. low specific heat capacity. D. none of the above
The dip in Europe's population from 1300 to 1500 was due in part to food shortages
Indicate whether this statement is true or false.
It is estimated to take _____ for the ocean's volume to circulate through the oceanic crust at spreading centers
a. 1 million years b. 10 million years c. 100 million years d. 1 billion years e. 10 billion years