The Inter-Tropical Convergence Zone is most found straddling the
A) Tropic of Cancer
B) Equator
C) Tropic of Capricorn
D) Antarctic Circle
E) Arctic Circle
B) Equator
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The location of Washington, D.C. as the U.S. capital was made possible by a compromise between northern and southern states in 1790. What decision was analogous in Australia?
A. Melbourne and Sydney were competing to be the the national capital, so they built the new capital, Canberra, halfway between the two. B. Since Australia's population is evenly split between southeast and southwest coasts, Adelaide on the south coast was made the capital. C. White Australia's wanted an English name for the capital, but aborigines wanted an indigenous name, so the compromise was Canberra, which means "meeting place." D. Canberra's layout was designed by Chicago architects Walter Burly Griffin and Marion Mahony Griffin.
How might hydrothermal ore genesis occur?
A) Hot seawater rushes through porous rocks and crystallizes on contact with the rocks. B) Cold seawater meets hot circulating hydrothermal fluids and precipitation occurs. C) Two rock masses meet at a hydrothermal vent and the heat of the water dissolves ions from both masses. They recrystallize when they are carried to cooler water. D) Hot water from a hydrothermal vent dissolves ions from one rock mass and reprecipitates them as ore in cooler water.
Differentiation of planetary embryos results in denser ________ cores and less-dense ________ mantles
A) silicate, non-silicate B) metallic, silicate C) silicate, metallic D) non-metallic, metallic
The horizontal motion of air relative to Earth's surface is
A) barometric pressure. B) wind. C) convection flow. D) a result of equalized pressure across the surface.