Coronae on Venus are believed to be
a. impact craters.
b. caused by rising convection currents in the interior of Venus.
c. the result of plate tectonics.
d. located only in the polar regions of Venus.
e. much older than the highlands such as Ishtar Terra.
B
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The time between the vernal equinox and the autumnal equinox is somewhat greater than the time between the autumnal equinox and the vernal equinox. This is a result of Kepler's ________ law.
A. First B. Second C. Third D. Fourth
Two forces act on a 55-kg object. One force has magnitude 65 N directed 59° clockwise from the positive x-axis, and the other has a magnitude 35 N at 32° clockwise from the positive y-axis. What is the magnitude of this object's acceleration?
A) 1.1 m/s2 B) 1.3 m/s2 C) 1.5 m/s2 D) 1.7 m/s2
New rocks that have had their original form altered by heat and pressure, but without melting, are classified as
a. sedimentary. b. metamorphic. c. igneous. d. all of these.
The fundamental silicon-oxygen compound is silicon dioxide, which is also called ______________
Fill in the blank(s) with correct word