A(n) ________ spectrum has bright lines on dark background.
A. absorption
B. continuous
C. emission
D. None of these choices are correct.
Answer: C
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The most efficient engine possible is the
A) Joule cycle. B) Wright cycle. C) Kelvin cycle. D) Carnot cycle. E) Otto cycle.
The Milky Way is considered to be an intermediately wound, barred spiral, which would be type ________, according to Hubble
A) SBb B) B2S C) Sa D) E4 E) SBV
The separation of red and blue light in single-lens telescopes is called ________ aberration
Fill in the blank(s) with correct word
As rock is weathered it breaks down and erodes. Sedimentation begins where erosion stops. Erosion is
A) disintegration and fragmentation of rock into smaller pieces. B) a chemical process. C) decomposition and alteration of rock material. D) transportation of rock particles via water wind or ice.