What allows ice to float?
a. Surface tension of ice is lower than the surface tension of liquid water.
b. Adhesion of ice is lower than the adhesion of liquid water.
c. Cohesion of ice is lower than the cohesion of liquid water.
d. Density of ice is lower than the density of liquid water.
e. Heat capacity of ice is lower than the heat capacity of liquid water.
d
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The famous city located on the shores of the Baltic, formerly known as Leningrad, is called
A) Vladivostok B) Volgograd C) Moscow D) St. Petersburg E) Kiev
Which of the following defines contact nucleation?
A. the joining of many nuclei to form an ice nucleus B. the freezing of supercooled droplets by contact with a nucleus C. the sticking together of ice crystals to make a snowflake D. the freezing of supercooled droplets when they make contact with a supercooled surface
The geography of production and trade has changed the global pattern of container ports. Which of the following are characteristic of these changes?
A) The world's largest ports are in Hong Kong and Singapore. B) The largest U.S. ports are on the east coast. C) New York City remains the highest U.S. port in trade volume. D) all of the above E) none of the above
Upwelling, the rising of water from deeper layers of the ocean, is a wind-induced movement that brings ________ water to the surface.
A) cold, nutrient-poor B) warm, nutrient-poor C) warm, nutrient-rich D) cold, nutrient-rich