CH. 9: The Jovian Planets TOPHAT Q'S

9.1-3: Jupiter rotates on its axis once in about __________. A) 10 hours. B) 24 hours. C) 10 Earth days. D) 88 Earth days. E) 17 hours.

A) 10 hours.

9.2-1: Saturn rotates on its axis once in about ____________. A) 10 hours. B) 24 hours. C) 10 Earth days. D) 88 Earth days. E) 17 hours.

A) 10 hours.

9.2-13: The first spacecraft to go into orbit around Saturn was ________. A) Cassini-Huygens. B) Galileo. C) Ulysses. D) Pioneer 11. E) Mariner 9.

A) Cassini-Huygens.

9.2-14: The first spacecraft to put a lander on Titan was ___________. A) Cassini-Huygens. B) Galileo. C) Ulysses. D) Pioneer 11. E) Mariner 9.

A) Cassini-Huygens.

9.1-6: The largest four moons of Jupiter are referred to as the ____________. A) Galilean satellites. B) Ganymedian satellites. C) Trojan satellites. D) Shakespearean satellites. E) Heracletian satellites.

A) Galilean satellites.

9.2-8: Which of the following objects is the largest moon of Saturn? A) Titan B) Titania C) Triton D) Ganymede E) Callisto

A) Titan

9.1-5: The angle between a planet's rotation axis and the perpendicular to the plane of its orbit determines the variability of its seasons. For Jupiter, this axial tilt angle is ___________. A) only a few degrees so seasons are negligible. B) similar to Earth so that seasons are very noticeable. C) similar to Uranus so that seasons are extreme. D) zero so that seasons do not exist.

A) only a few degrees so seasons are negligible.

9.2-2: Which of the following temperatures is closest to what you might expect on the planet Saturn? A) -150°F B) -250°F C) 50°F D) -350°F E) 100°F

B) -250°F

9.1-4: Compared to the Earth, the planet Jupiter is roughly ___________. A) the same size. B) 10 times as large. C) 100 times as large. D) 1000 times as large.

B) 10 times as large.

9.3-2: Compared to the Earth, the planet Uranus is roughly ________. A) the same size. B) 4 times as large. C) 11 times as large. D) twice as large. E) half as large.

B) 4 times as large.

9.1-9: The Galilean satellites of Jupiter are _______________________. A ) Titan, Ganymede, Callisto, and Io. B) Callisto, Europa, Ganymede, and Io. C) Janus, Epimetheus, Iapetus, and Titan. D) Ganymede and Callisto. E) Io and Titan.

B) Callisto, Europa, Ganymede, and Io.

9.1-13: The first spacecraft to go into orbit around Jupiter was ___________. A) Cassini-Huygens. B) Galileo. C) Ulysses. D) Pioneer 11. E) Mariner 9.

B) Galileo.

9.2-1: Which of the following planets or moons has an atmosphere consisting mainly of Hydrogen and Helium? A) Venus B) Saturn C) Titan D) Uranus

B) Saturn

9.2-12: Which of the following spacecraft was the 2nd to fly past Saturn and the 1st to target the moon Titan? A) Mariner 9 B) Voyager 1 C) Pioneer 11 D) Pioneer 10 E) Viking 1

B) Voyager 1

9.1-11: Jupiter has ___________. A) no ring system at all. B) a few rings made of dark rocks. C) an extensive ring system made of ice-covered rocks.

B) a few rings made of dark rocks.

9.1-3: The Great Red Spot is _________. A) a Chinese Restaurant. B) a hurricane on Jupiter. C) a volcano on Mars. D) A prominent feature on Saturn. E) A tar pit on Titan.

B) a hurricane on Jupiter.

9.3-4: The rotation axis of Uranus is ___________. A) nearly perpendicular to the plane of its orbit, so it has no seasons. B) almost in the plane of its orbit so that its ring system can sometimes be seen as near-circles. C) inclined at an angle to the perpendicular that is similar to Earth's rotation axis.

B) almost in the plane of its orbit so that its ring system can sometimes be seen as near-circles.

9.3-5: Uranus's magnetic North and South poles are ____________. A) displaced from its rotation axis poles, but still symmetrical about its center, much like Earth's. B) displaced from its rotation axis poles and also from the center of the planet. C) almost exactly aligned with its rotation axis. D) near the equator of the planet.

B) displaced from its rotation axis poles and also from the center of the planet.

9.4-3: Neptune's magnetic North and South poles are __________. A) displaced from its rotation axis poles, but still symmetrical about its center, much like Earth's. B) displaced from its rotation axis poles and also from the center of the planet. C) almost exactly aligned with its rotation axis. D) near the equator of the planet.

B) displaced from its rotation axis poles and also from the center of the planet.

9.2-5: As Saturn orbits the Sun, we see its rings from different angles. We see the rings __________. A) as perfect circles exactly once each orbit. B) edge-on as a straight line exactly twice each orbit. C) edge-on as a straight line exactly once each orbit.

B) edge-on as a straight line exactly twice each orbit.

9.1-13C: The spacecraft Galileo _____________. A) landed on the planet Mars. B) flew past the planet Jupiter and photographed its moons. C) went into orbit around the planet Jupiter and dropped a probe into its atmosphere. D) went into orbit around the planet Venus.

B) flew past the planet Jupiter and photographed its moons.

9.4-2: The inclination angle of a planet's rotation axis is defined so that a planet that is rotating in the usual direction about an axis that is perpendicular to the plane of the solar system would have an inclination of 0°, while a planet that is rotating in the opposite (retrograde) direction about an axis that is perpendicular to the plane of the solar system would have an inclination angle of 180°. The inclination angle of the planet Neptune is closest to _______. A) 0°. B) 180°. C) 30°. D) 98°. E) 200°.

C) 30°.

9.1-12: Which of the following spacecraft were the first to fly past Jupiter? A) Mariner 9 and Mariner 10 B) Voyager 1 and Voyager 2 C) Pioneer 10 and Pioneer 11 D) Viking 1 and Viking 2

C) Pioneer 10 and Pioneer 11

9.2-11: Which of the following spacecraft was the first to fly past Saturn? A) Mariner 9 B) Voyager 1 C) Pioneer 11 D) Pioneer 10 E) Viking 1

C) Pioneer 11

9.4-5: Which of the following objects is the largest moon of Neptune? A) Titan B) Titania C) Triton D) Ganymede E) Callisto

C) Triton

9.2-7: Saturn's magnetic North and South poles are __________. A) displaced from its rotation axis poles, but still symmetrical about its center, much like Earth's. B) displaced from its rotation axis poles and also from the center of the planet. C) almost exactly aligned with its rotation axis. D) near the equator of the planet.

C) almost exactly aligned with its rotation axis.

9.2-10: Saturn has ______________. A) no ring system at all. B) a few rings made of dark rocks. C) an extensive ring system made of ice-covered rocks

C) an extensive ring system made of ice-covered rocks

9.2-3: According to our current model of how planets form magnetic fields, the magnetic field of Saturn is much less than the magnetic field of Jupiter because Saturn ____________. A) rotates more slowly than Jupiter. B) has less liquid iron in its core than Jupiter. C) has less metallic hydrogen in its core than Jupiter. D) rotates more rapidly than Jupiter. E) has less ammonia-water mixture in its core than Jupiter.

C) has less metallic hydrogen in its core than Jupiter.

9.4-3: The rotation axis of Neptune is ______________. A) nearly perpendicular to the plane of its orbit, so it has no seasons. B) almost in the plane of its orbit so that its ring system can sometimes be seen as near-circles. C) inclined at an angle to the perpendicular that is similar to Earth's rotation axis.

C) inclined at an angle to the perpendicular that is similar to Earth's rotation axis.

9.2-6: The magnetic field of Saturn is _____________. A) essentially zero. B) about 1% of the Earth's magnetic field. C) similar in intensity to the Earth's magnetic field. D) about 10 times the intensity of the Earth's magnetic field. E) about 100 times the intensity of the Earth;s magnetic field.

C) similar in intensity to the Earth's magnetic field.

9.3-1: The inclination angle of a planet's rotation axis is defined so that a planet that is rotating in the usual direction about an axis that is perpendicular to the plane of the solar system would have an inclination of 0°, while a planet that is rotating in the opposite (retrograde) direction about an axis that is perpendicular to the plane of the solar system would have an inclination angle of 180°. The inclination angle of the planet Uranus is closest to __________ A) 0°. B) 180°. C) 30°. D) 98°. E) 200°.

D) 98°.

9.1-4: Which of the following objects is the largest moon of Jupiter? A) Titan B) Titania C) Triton D) Ganymede E) Callisto

D) Ganymede

9.1-6: Which of the following objects has a magnetic field with about ten times the intensity of the Earth's field? A) Mercury B) Earth's Moon C) Mars D) Jupiter E) Saturn

D) Jupiter

9.1-2: The temperature on Jupiter is ___________. A) much hotter than anywhere on Earth. B) Similar to Rochester New York. C) Similar to a cold day in Antarctica. D) Much colder than anywhere on Earth.

D) Much colder than anywhere on Earth.

9.2-4: Which of these planets has a solar day that is shorter than half an Earth day in length? A) Mercury B) Venus C) Mars D) Saturn E) Uranus

D) Saturn

9.2-4: The Cassini-Huygens spacecraft ____________. A) landed on the planet Mars. B) Flew past the planet Jupiter and photographed its moons. C) Went into orbit around the planet Jupiter and dropped a probe into its atmosphere. D) Went into orbit around the planet Saturn.

D) Went into orbit around the planet Saturn.

9.2-3: A surface feature that is unique to Saturn is _________________. A) a weather pattern called the Great Dark Spot. B) a weather pattern called the Great Red Spot. C) an octagon-shaped pattern of clouds at its North Pole. D) a hexagon-shaped pattern of clouds at its North Pole.

D) a hexagon-shaped pattern of clouds at its North Pole.

9.1-7: The magnetic field of Jupiter indicates that its core must contain large amounts of _________. A) solid iron. B) liquid iron. C) a solid that can conduct electricity. D) a liquid that can conduct electricity. E) solid rock.

D) a liquid that can conduct electricity.

9.1-4: The magnetic field of Jupiter is ____________. A) essentially zero. B) about 1% of the Earth's magnetic field. C) Similar in intensity to the Earth's magnetic field. D) about 10 times the intensity of the Earth's magnetic field. E) about 100 times the intensity of the Earth's magnetic field.

D) about 10 times the intensity of the Earth's magnetic field.

9.1-1: Jupiter has _________. A) almost no atmosphere. B) an atmosphere of carbon dioxide with about 90 times the surface pressure of Earth's. C) an atmosphere of carbon dioxide with about 1% the surface pressure of Earth's. D) an atmosphere of Hydrogen and Helium with no real surface. E) an atmosphere of Hydrogen and Helium with some methane.

D) an atmosphere of Hydrogen and Helium with no real surface.

9.2-1: What we refer to as a "Saturn Ring-plane Crossing" corresponds to what season on Saturn? A) late summer or early winter. B) summer or winter solstice. C) late fall or early spring. D) fall or spring equinox.

D) fall or spring equinox.

9.3-8: The moon Miranda is peculiar because it ___________. A) is black on one side and white on the other. B) square dances with another moon. C) has a dense atmosphere. D) has a surface feature that looks like a giant check mark. E) orbits the wrong way.

D) has a surface feature that looks like a giant check mark.

9.3-2: The temperature on Uranus is ___________. A) much hotter than anywhere on Earth. B) similar to Rochester New York. C) similar to a cold day in Antarctica. D) much colder than anywhere on Earth.

D) much colder than anywhere on Earth.

9.4-2: The temperature on Neptune is ____________. A) much hotter than anywhere on Earth. B) similar to Rochester New York. C) similar to a cold day in Antarctica. D) much colder than anywhere on Earth.

D) much colder than anywhere on Earth.

9.3-7: The magnetic field of Uranus is thought to be generated by ____. A) a solid iron core. B) liquid iron in its core. C) liquid metallic hydrogen in its core. D) something that is not on this list.

D) something that is not on this list.

9.2-3: Upon close examination by space probes, the rings of Saturn are found to consist of _____________. A) a solid sheet of particles with no structure. B) a few bands of particles, separated by gaps where there are no particles. C) thin clouds orbiting Saturn. D) thousands of circular rings. E) a few dozen circular rings.

D) thousands of circular rings.

9.3-3: Uranus rotates on its axis once in about _____________. A) 10 hours. B) 24 hours. C) 10 Earth days. D) 88 Earth days. E) 17 hours.

E) 17 hours.

9.1-10: Which of the following objects is a moon of Jupiter? A) Titan B) Miranda C) Triton D) Nereid E) Callisto

E) Callisto

9.2-7: Which of the following space probes flew past Saturn but not past Jupiter? A) Cassini-Huygens B) Voyager 1 C) Pioneer 11 D) Pioneer 10 E) None of these.

E) None of these.

9.3-6: Which of the following spacecraft is the only one to have flown past Uranus? A) Galileo B) Voyager 1 C) Pioneer 11 D) Cassini-Huygens E) Voyager 2

E) Voyager 2

9.3-9: Which of the following spacecraft is the only one to have flown past Uranus? A) Galileo B) Voyager 1 C) Pioneer 11 D) Cassini-Huygens E) Voyager 2

E) Voyager 2

9.4-4: Which of the following spacecraft is the only one to have flown past Neptune? A) Galileo B) Voyager 1 C) Pioneer 11 D) Cassini-Huygens E) Voyager 2

E) Voyager 2

9.3-1: Uranus has _________. A) almost no atmosphere. B) an atmosphere of carbon dioxide with about 90 times the surface pressure of Earth's. C) an atmosphere of carbon dioxide with about 1% the surface pressure of Earth's. D) an atmosphere of Hydrogen and Helium with no real surface. E) an atmosphere of Hydrogen and Helium with some methane.

E) an atmosphere of Hydrogen and Helium with some methane.

9.4-1: Neptune has __________. A) almost no atmosphere. B) an atmosphere of carbon dioxide with about 90 times the surface pressure of Earth's. C) an atmosphere of carbon dioxide with about 1% the surface pressure of Earth's. D) an atmosphere of Hydrogen and Helium with no real surface. E) an atmosphere of Hydrogen and Helium with some methane.

E) an atmosphere of Hydrogen and Helium with some methane.

9.2-9: Titan has ___________. A) almost no atmosphere. B) an atmosphere of carbon dioxide with about 90 times the surface pressure of Earth's. C) an atmosphere of carbon dioxide with about 1% the surface pressure of Earth's. D) an atmosphere whose temperature and pressure permit liquid water. E) an atmosphere whose temperature and pressure permit liquid methane.

E) an atmosphere whose temperature and pressure permit liquid methane.

9.1-8: The number of moons of Jupiter is ______. A) 0. B) 1. C) 2. D) 4. E) at least 62

E) at least 62