Comparing the clouds of Earth and Venus, we find that:
A) both are made chiefly of water vapor.
B) ours lie in the troposphere, within 10 kilometer of our surface, but Venus has a higher troposphere, with its clouds about 40 kilometers high.
C) like ours, they rotate around Venus slower than Venus rotates on its axis.
D) Venus has much more carbon dioxide, so dry ice clouds dominate.
E) Venus is too hot for clouds to form, so we see only a barren world telescopically.
B
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As a ball bounces from a floor, its acceleration off the floor between bounces is
A) significantly less than g. B) g. C) slightly more than g. D) significantly more than g.
Suppose that we suddenly discovered that all these years we'd been wrong about the distance from Earth to the Sun, and it is actually 10% greater than we'd thought. How would that affect our estimate of the distance to the Andromeda Galaxy?
A) It would not have any effect on our estimate of the distance to the Andromeda Galaxy. B) It would mean the distance to the Andromeda Galaxy is also 10% greater than we thought. C) It would mean the distance to the Andromeda Galaxy is 10% less than we thought. D) It would mean that all the objects we've assumed are standard candles really are not good standard candles, and therefore that we have no idea of the true distance to the Andromeda Galaxy.
If you stood on a planet having a mass four times higher than Earth's mass, and a radius two times longer than Earth's radius, you would weigh
A) the same as you do on Earth. B) two times more than you do on Earth. C) two times less than you do on Earth. D) four times more than you do on Earth.
Intrusive igneous rock formations that lie more or less parallel to older formations are said to be ______________
Fill in the blank(s) with correct word