Olympus Mons is an enormous volcano on Mars. It is the largest volcano in the solar system. Compositionally and structurally, Olympus Mons is most like a shield volcano on Earth, but it is many times larger
Why should Mars produce such a monstrous shield volcano, while Earth isn't capable of producing one that large?
What will be an ideal response?
Answer: Earth has plate tectonics. Mars does not. Shield volcanoes that erupted due to hot-spot activity on Earth got carried away from their hot-spot magma source due to the motion of the plate on which they erupted. On Mars, no such lateral motion exists, so the lava keeps piling up for the duration of the hot spot's activity.
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In the year 2006, the U.S. consumed approximately one billion tons of coal. Each ton of coal produces 20 GJ (gigajoules of energy). How much energy was actually put to work?
A. 16% B. 59% C. 84% D. 29%
What is the current situation for native land rights in Australia?
What will be an ideal response?
Noctilucent clouds are:
A) the same as nacreous clouds, but they exist at a lower elevation. B) found in the mesosphere. C) most easily observed in summer. D) most easily observed near the equator.
Thunder and lightning are normally associated with ________ clouds
Fill in the blank(s) with correct word