Planets/Quiz

Planets is a lecture and an article. Planetary science is a field within astronomy that focuses on spheroidal, substellar astronomical objects apparently in an orbit around a star.

You are free to take this quiz based on planets at any time.

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Quiz
{What is the decoy? { Mercury (i) } instead of { Mars (i) }
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{Which of the following are theoretical radiation astronomy phenomena associated with a wanderer? + possible orbits + a charged particle wind + gravity + near the barycenter its system - swirls of tan, green, blue, and white in the liquid methane + electric arcs + chlorophyll-containing phytoplankton aloft in an upper atmosphere
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{Before the current era and perhaps before 6,000 b2k which classical planet may have been observed as a pole star for the Earth? { Osiris|Saturn (i) }
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{Which of the following is characteristic of the scattered disc + a distant region of the solar system + the dwarf planet Eris + orbital eccentricites ranging up to 0.8 - inclinations as high as 50° + perihelia greater than 30 AU + Dysnomia
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{True or False, The astronomer Clyde Tombaugh is the discoverer of Charon. - TRUE + FALSE
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{Which of the following is not a phenomenon associated with Ceres? - the smallest identified dwarf planet - Ceres is spheroidal - it is in orbit around the Sun - it appears to be in hydrostatic equilibrium - it has not cleared its neighborhood + Ceres is one of the two natural satelites of Mars
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{True or False, The observations of planetary motion agree with computed orbits to the accuracy of the observations. - TRUE + FALSE
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{That part of outer space between planets and their star(s) is called? { interplanetary medium (i) }
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{Which of the following are theoretical radiation astronomy phenomena associated with a planet? + possible orbits - a hyperbolic orbit - nuclear fusion at its core - nuclear fusion in its ionosphere - near the barycenter of its stellar system + accretion + electric arcs + impact craters
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{True or False, A planet has been referred to as a moving light in the sky. + TRUE - FALSE
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{Which of the following is not a studied characteristic of a planet? - an orbit around a star - a hydrostatic equilibrium (nearly round) shape + nucleosynthesis - has cleared the neighbourhood around its orbit - an initially fractionated elemental composition
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{True or False, Neptune is a gas dwarf. - TRUE + FALSE
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{Which of the following is not a phenomenon associated with the planet Mars? - iron oxide + the MESSENGER spacecraft - water - meteorites on Earth - Olympus Mons - climate
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{True or False, The average value of the radius of the Earth's orbit around the Sun is a displacement. + TRUE - FALSE
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{The Sun as a planet has what property? - it's subject to lunar eclipses - it passes once a year through the Big Dipper - its interior structure has been studied with radar - optical reflectance studies have found evidence of magnesium - it has a surface temperature of ~700 K + it is a wanderer
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{True or False, To ancient astronomers stars remain relatively fixed over the centuries while planets move an appreciable amount during a comparatively short time. + TRUE - FALSE
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{Complete the text: The majority of known asteroids orbit the Sun between the orbits of { Mars|Jupiter (i) } and { Jupiter|Mars (i) }.
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{Which of the following are theoretical radiation astronomy phenomena associated with a satellite in orbit around the Earth? + background radiation - a charged particle wind which emanates out of a beam line + gravity + near the barycenter for the Earth-Moon system - swirls of tan, green, blue, and white in the water + electric arcs + chlorophyll-containing phytoplankton aloft in the upper atmosphere
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{Yes or No, The Sun is a classical planet. + Yes - No
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{Which of the following is associated with Pluto? + a dwarf planet - a member of the Oort belt + the northern polar region has brightened + the southern polar region has darkened - its overall redness has decreased + extreme axial tilt
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{Phenomena associated with Kepler-36b? - has a gaseous surface + about 30% of its mass is iron + about 4.5 times the mass of Earth + has a rocky surface + discovered by the Kepler spacecraft + about 1.5 times as large as the Earth
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{The Sun as a classical planet has which characteristics? + depending on latitude the Sun passes overhead every day on Earth + the size of its disc is very close to that of the Moon + it appears to revolve along the ecliptic - it is named after Sunday + Helios is the lord of the Sun - Helios is a son of Jupiter
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{Venus is not known historically for which of the following? + being in orbit around the Sun in 10,000 b2k - imaged by the Magellan probe - a gas dwarf when viewed in the ultraviolet - almost as large as the Earth - may have appeared comet-like in human memory - having a high surface temperature
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{Before the current era and perhaps before 6,000 b2k which classical planet may have been green? { Osiris|Saturn (i) }
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{Which of the following is not a phenomenon usually associated with solar wanderers? - green aurora - oxygen + production of 7Be - carbon or C2 - airglow - nitrogen - olivine
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{With respect to protoplanetary disks what green mineral has been found? { olivine (i) }
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{If Osiris in ancient Egyptian mythology/observational astronomy corresponds to Saturn, and Horus is the son of Osiris, what classical planet does Horus correspond to? - the green planet - Mercury - Mars - Uranus - Venus + Jupiter
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{Who first proposed the hypothesis that the Sun is at rest, while the Earth and the planets rotate about the Sun? { Aristarchus (i) }
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{What term was first used with reference to the transfer of momentum from the Sun to the planets in 1942 { magnetohydrodynamics (i) }
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{Name a classical planet that was not apparently seen in the sky before 5102 b2k { Venus (i) }
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{To the Babylonians, this object represented their god Marduk. { Jupiter (i) }
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{Johannes Kepler is not known for which of the following? - being an astrologer - a key figure in the 17th century scientific revolution + Euclidean geometry - projective geometry - if a straight line is extended to infinity it will meet itself at a single point at infinity, thus having the properties of a large circle - Rudolphine Tables
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{Soon after the invention of radar astronomy, what classical planet was detected { Moon (i) }
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{Which of the following may be characteristic of orbital theory? + a hyperbolic pass + stellar association - may point away from a stellar association + eccentricity + obliquity + precession
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Hypotheses

 * 1) Planets are only those substellar astronomical objects in revolution around one or more stars.