In Hubble's classification, which type of galaxy has a small bulge and loose, widely spread, poorly defined spiral pattern?
A) SO
B) S9
C) Sa
D) Sc
E) SBw
A
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Which is a distinguishing characteristic of the Jovian planets? a. Jovian planets are rocky
b. Jovian planets are geologically inactive. c. Jovian planets have rings. d. Jovian planets have only one or two moons. e. Jovian planets have high albedos.
If you drop a stone into a hole drilled all the way to the other side of Earth (neglect the molten core), the stone will
A) come to an abrupt stop at Earth's center. B) speed up until it gets to Earth's center. C) speed up until it reaches Earth's other side. D) slow down until it reaches Earth's center.
When a metamorphic rock is melted and then re-solidifies it turns into
A) an igneous rock B) a sedimentary rock C) a meteorite D) another metamorphic rock
An 800-MW electric power plant has an efficiency of 30%. It loses its waste heat in large cooling towers. Approximately how much waste heat (in MJ) is discharged to the atmosphere per second?
a. 1 200 b. 1 900 c. 800 d. 560 e. 240