Jupiter's center appears to have a rocky core. In this context, the term rocky core refers to:
A) the number of light-weight elements in Jupiter.
B) Jupiter's temperature.
C) Jupiter's chemical composition.
D) the properties of the material present in Jupiter.
C
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Compared to Earth, Venus has:
A) a more transparent atmosphere. B) a lower average surface temperature. C) a far greater percentage of its surface in low-level ocean basins. D) about the same percentage of its surface in raised continents. E) a far greater percentage of its surface in raised continents.
The thermosphere is warm because it
A) absorbs X-rays. B) absorbs infrared light. C) absorbs visible light. D) contains greenhouse gases. E) absorbs ultraviolet light.
A 6.0-kg object is falling downward with an acceleration of 3.27 m/s2 . Of the following values, which is nearest to the drag force on the object?
a. 3.3N c. 20 N b. 65 N d. 39 N
When liquid water freezes, it
A) loses energy. B) gives off energy. C) gains energy. D) radiates energy.