Which mineral is not a polymorph of Al2SiO5?
A) andalusite
B) garnet
C) kyanite
D) sillimanite
Answer: B
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In the Northern Hemisphere, the westerlies are created by the Coriolis effect acting on air
A) from the subpolar low flowing south to the subtropical high. B) from the subtropical high flowing north to the subpolar low. C) from the subtropical high flowing south to the subpolar low. D) from the subpolar low flowing north to the subtropical high.
Schooling behavior makes normally small fish appear like a large organism from a distance. Indicate whether the statement is true or false
Why is the hole in the ozone greatest over Antarctica?
A) The Coriolis Effect produces the ozone hole and is greatest in the polar regions. B) Ozone, a greenhouse gas which traps ultraviolet energy radiated from the Earth's surface, has highest concentration in Antarctica. C) South American countries have not ratified the Montreal Protocol and continue to release ozone-destroying CFCs. D) Because of a combination of thin, icy clouds and Antarctic wind patterns which trap chlorine freed from CFCs. E) The ozone hole is a natural phenomenon related to high polar stratospheric clouds.
Which of the following best describes the Reverse Osmosis Method for desalination?
A) A current is run through positive and negative electrodes in freshwater separated by semipermeable membranes from seawater. B) Large icebergs are brought to coastal waters off countries that need freshwater where they are melted. C) Saltwater is boiled and the water vapor is passed through a cooling condenser, where it condenses as freshwater. D) Seawater is frozen and thawed multiple times, with the salts washed from the ice between each thawing. E) Water on the salty side of a semipermeable membrane is pushed under high pressure through the membrane to the freshwater side.