This causes the brilliant flash of lightning
A) dart leader.
B) step leader.
C) pilot leader.
D) return stroke.
E) blitzlicht.
D
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A projectile that is fired vertically at 11.2 km/s from Earth's surface will
A. escape from Earth. B. go into circular orbit about Earth. C. rise and fall back to Earth's surface. D. follow an uncertain path.
Past sea surface temperatures can be determined from fossils found in deep ocean sediments
a. True b. False
According to Figure 6.2 in your textbook, when metamorphism occurs, the range of temperatures and pressures encompasses all of the following except
A) the boiling temperature of water. B) conditions for lithification of sedimentary rocks. C) conditions for melting water-rich rocks. D) conditions for melting dry rocks.
Longwaves in the middle and upper troposphere usually have lengths on the order of thousands of
kilometers. a. true b. false