In Quest of the Universe, 5e: Explorations

Title Text: In Quest of the Universe, Fourth Edition

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Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor.

1: Jupiter is oblate because
	A: of tidal interactions with its satellites.
	B: of its strong magnetic field.
	C: of its high rotational rate.
	D: of its high orbital period.
	E: of the high percentage of hydrogen in its atmosphere.

2: Which of the following is correct about Jupiter?
	A: It emits radio waves.
	B: It emits more energy than it receives from the Sun.
	C: Its moon Ganymede is the largest moon in the solar system.
	D: It has a very stormy atmosphere.
	E: (All of the above.)

3: Which of the following is correct about Europa?
	A: Geysers have been observed erupting on it.
	B: A great number of deep impact craters have been observed on its surface by the Galileo spacecraft.
	C: The Galileo spacecraft has observed lakes of liquid water on the surface of Europa.
	D: Its magnetic field reverses every 5.5 hours.
	E: It has no magnetic field since it is mostly made of water ice.

4: Which of the following is not true about Jupiter?
	A: Unlike Earth, Jupiter's core is not responsible for its magnetic field.
	B: Jupiter emits more energy than it receives from the Sun.
	C: Powerful auroras are observed close to Jupiter's poles.
	D: It is possible that the Great Red Spot is the result of merging process between giant storms.
	E: There seem to be no changes in the observed belts and zones on Jupiter for long periods of time (a few years or so).

5: Saturn emits more energy than it receives from the Sun. This excess energy
	A: is energy left over the planet's formation, just as is the case for Jupiter.
	B: is the result of the planet's shrinking due to gravity.
	C: is due to radioactivity in the planet's core.
	D: is due to helium condensation.
	E: (The statement is misleading. Unlike Jupiter, Saturn does not emit more energy than it receives from the Sun.)

6: Which of the following is/are related to Saturn?
	A: Callisto
	B: Titania
	C: comet Shoemaker-Levy 9
	D: the Cassini spacecraft
	E: (Both B and D.)

7: Saturn's rings
	A: lie in the planet's equatorial plane.
	B: do not revolve according to Kepler's laws.
	C: are composed of objects that are mostly iron and ice.
	D: rotate like a solid object.
	E: have the same orbital periods.

8: During one revolution around the Sun, an observer on the north pole of Uranus will observe the Sun above his horizon for about
	A: 84 years (the sidereal period of Uranus).
	B: 42 years (half the sidereal period of Uranus).
	C: 17 hours (the rotational period of Uranus).
	D: 8.5 hours (half the rotational period of Uranus).
	E: (The statement is misleading. He will never observe the Sun above his horizon because of the tilt of the planet's rotational axis.)

9: The blue color of Neptune is the result of
	A: absorption of red light by the methane in its atmosphere.
	B: emission of blue light by the methane in its atmosphere.
	C: emission of blue light by the hydrogen in its atmosphere.
	D: absorption of red light by the helium in its atmosphere.
	E: (The statement is misleading. Uranus' color is blue, not Neptune's.)

10: The Jovian planets have ring systems but the terrestrial planets do not. This is because
	A: the terrestrial planets do not have a Roche limit.
	B: early in the history of our solar system the solar wind cleared the inner region of any debris.
	C: the tidal interactions between a satellite that is trying to form in the vicinity of a Jovian planet and the Jovian planet itself are greater than those in the case of a similar satellite in the vicinity of a terrestrial planet.
	D: (Both A and C.)
	E: (None of the above.)

11: Titan
	A: is larger than Mercury.
	B: has an atmosphere denser than Earth's.
	C: has a surface rich in organic compounds.
	D: has a surface that is shaped by winds, liquid flows, and tectonic activity.
	E: (All of the above.)

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