The Earth and the Moon pull on each other. The greater force is by the
A. Earth on the Moon.
B. Moon on the Earth.
C. Neither, for both forces have equal strengths.
D. cannot be estimated
Answer: C
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The difference in texture between intrusive and extrusive rocks is primarily due to
A. different mineralogy B. different amounts of water in the magma C. different rates of cooling and crystallization
When a contracting hot ball of gas spins into a disk shape, it cools faster due to
A) increased convection currents. B) increased radiation transfer. C) decreased insulation. D) increased surface area. E) eddy currents.
Strong storms that develop over water, poleward of the polar front, are called:a
nor’easters. b. upslope lows. c. lee-side lows. d. polar lows. e. none of the above
After many years of planning, trains could travel all the way from Adelaide to Darwin in ________, reducing the isolation of the Northern Territory capital and the towns along the rails
A) 1888 B) 1913 C) 1945 D) 2001