Energy is transported from the tropics to the polar regions chiefly by
A) winds.
B) ocean currents.
C) interchange of carbon dioxide.
D) none of the above
Answer: A
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From the viewpoint of an alien astronomer, how does Jupiter affect observations of our Sun?
A) It causes the Sun to move in a small ellipse with an orbital period of about 12 years. B) It makes the Sun periodically get somewhat brighter. C) It makes the Sun appear dimmer when viewed with infrared light. D) It causes the Sun to move in a small ellipse in the sky, with the same ellipse repeated every night.
What are the seasons like on a planet whose rotation axis is NOT tilted with respect to its orbital plane?
A) shorter than those on Earth. B) longer than those on Earth. C) the same as those on Earth. D) Reversed from those on Earth (winter, fall, summer, spring). E) there are no seasons.
A heavy block at rest is suspended by a vertical rope. When the block is accelerated upward by the rope, the rope tension
A) is less than its weight. B) equals its weight. C) is greater than its weight.
What will you see with the following type of optic: Plano lens
A. Image is smaller |
B. Image is the same |
C. Image is larger |