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74 Cards in this Set
- Front
- Back
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Identify this object.
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Mercury. Mercury is 36 million miles from the Sun.
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Mercury is ______ miles from the Sun.
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36 million.
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Mercury has ___ moon(s).
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Zero. Mercury is one of two planets in the solar system with no moons.
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________ is characterized by a temperature range of -270 to 800 degree Fahrenheit, high iron content, and tall, steep cliffs.
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Mercury. Mercury also experiences extreme days and nights.
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The largest surface feature on Mercury is the _____________.
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Caloris Basin.
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Identify this object.
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Venus. Venus is 67 million miles from the Sun.
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Venus is ______ miles from the Sun.
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67 million.
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Venus has ___ moon(s).
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Zero. Venus, like Mercury, has no moons.
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The hottest planet is _________.
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Venus. With surface temperatures greater than 320 degrees Celcius, sulfuric-acid swathed Venus is inhospitable to humans.
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The highest mountain on Venus is _____________.
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Maxwell Mountain. Venus is a geologically active planet showing signs of past volcanism.
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Venus rotates _________________.
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East-to-west (clockwise), opposite the west-to-east rotation of the other planets.
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The cloudy atmosphere of Venus creates an extreme __________________.
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Venus' thick clouds of sulfuric acid trap heat near the surface, making it hotter than Mercury, despite Mercury's greater proximity to the Sun.
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Identify this object.
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Earth. Earth is 93 million milest from the Sun.
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Earth is ______ miles from the Sun.
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93 million.
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Earth has ___ moon(s).
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One. Earth has one moon, Luna.
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Earth's moon is ______.
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Luna.
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Identify this object.
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Mars. Mars is 142 million miles from the Sun.
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Mars is ______ miles from the Sun.
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142 million.
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Mars has ___ moon(s).
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Two: Phobos and Deimos.
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____________ shows evidence of a watery past.
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Mars. Geological evidence suggests past wide-scale water coverage and more recent geyser-like water flows.
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The highest known mountain in the Solar System is __________.
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Olympus Mons. If it were relocated from Mars to Earth, this sixteen-mile-high volcano would cover the state of Arizona.
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The largest known canyon in the solar system is ______________.
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Vallis Marineris. This vast canyon system runs along the Martian equator and it's nearly 5,000 km length stretches across one quarter of the planet's circumference.
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The largest planet is _______________.
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Jupiter. All of the other planets in the solar system could fit inside its mass.
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Identify this object.
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Jupiter. Jupiter is 484 million miles from the Sun.
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Jupiter is ______ miles from the Sun.
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484 million.
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________'s atmosphere is primarily hydrogen and helium.
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Jupiter.
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_________ similar to Earth's have been observed surrounding Jupiter.
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Van Allen Belts.
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Jupiter has ___ moon(s).
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63. The largest planet has the largest number of natural satellites.
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Jupiter's four largest moons are ____________________.
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Io, Europa, Callisto and Ganymede.
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Identify this object.
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Io. This volcanic satellite of Jupiter draws its yellow color from its many sulfurous compounds.
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Io has ____ active volcanoes.
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400, making it the most geologically active body in the Solar System.
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Identify this object.
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Europa. Slightly smaller than our moon, Europa's surface is smooth.
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Smooth ________ may have a subsurface ocean, leading to conjecture that it may support life.
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Europa. Conjecture about the possibility of life on Europa has led to lobbying for future missions to this Gallilean moon.
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Identify this object.
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Ganymede, the largest moon in our solar system.
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The largest moon in the solar system is ________.
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Ganymede. Ganymede orbits Jupiter in about seven days.
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Identify this object.
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Callisto, Jupiter's icy moon.
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Cratered _________ is nearly as large as Mercury.
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Callisto. Rocky, icy Callisto is the second-largest of Jupiter's moons.
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Identify this object.
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Saturn. Saturn is 888 million miles from the Sun.
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Saturn is ______ miles from the Sun.
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888 million.
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_________ is often called the "Ringed Planet."
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Saturn. Saturn is famous for its spectacular rings.
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Saturn has ___ moon(s).
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59. The second-largest planet has the second greatest number of moons.
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Identify this object.
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Titan, the second-largest moon in the Solar System.
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Saturn's largest moon is ___________.
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Titan. Titan is remarkable as it is the only moon with a thick atmosphere.
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________ is the only moon with a thick atmosphere.
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Titan, Saturn's largest moon.
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Saturn's smaller moons act as _______________.
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Ring shepherds. The best-known of these is Atlas, long thought to shepherd Saturn's Outer (A) Ring.
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Saturn's rings have corresponding letter from A through ___.
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G. Only A and B Rings are typically visible from Earth.
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The ___________ separates Saturn's A and B Rings.
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Cassini Division. From Earth, this appears as a thin black gap between the Outer (A) and the large, bright B Ring.
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The ___________ separates Saturn's B and C Rings.
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Maxwell Division. This gap separates the bright B Ring from the wide but faint C Ring.
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The outermost of Saturn's rings is ____.
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E. Although the scale goes to G, the outermost ring is the extremely wide, diffuse E.
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Saturn's F Ring has ___ shepherd(s).
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Two: Prometheus and Pandora.
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________ is the F Ring's outer shepherd.
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Pandora. Prometheus tends the inner edge of the F Ring.
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Identify this object.
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Uranus. Uranus is 1.8 billion miles from the Sun.
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Uranus is ______ miles from the Sun.
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1.8 billion.
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Uranus rotates __________.
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On its side.
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Uranus has ___ moon(s).
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27
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Uranus' largest moons are all ____, cratered bodies.
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Icy. The four largest moons orbiting Uranus are Ariel, Umbriel, Titania, and Oberon.
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____________ are the large moons nearest Uranus.
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Ariel and Umbriel.
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______________ orbit far from Uranus.
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Titania and Oberon.
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Identify this object.
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Neptune. Neptune is 2.8 billion miles from the Sun.
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Neptune is ______ miles from the Sun.
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2.8 billion.
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Neptune's winds reach ________.
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1,500 miles per hour.
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Neptune has ___ moon(s).
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13
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Identify this object.
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Triton, Neptune's largest moon.
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Neptune's largest moon is _________.
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Triton. Triton's two brightest rings are called Adams and Leverrier.
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__________ orbits opposite its planet's rotation.
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Triton. Triton exhibits a retrograde orbit.
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Triton is _________ active.
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Geologically. Triton is dotted with nitrogen geysers across its icy mantle.
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________ is the former "farthest planet from the Sun."
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Pluto. This dwarf planet is 3.6 billion miles from the sun.
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Pluto is ______ miles from the Sun.
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3.6 billion.
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Pluto has ___ moon(s).
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Three, although the largest, Charon, may be a companion dwarf planet in a binary orbit.
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_______ is half the size of Pluto.
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Charon, Pluto's largest moon.
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There are _____ known natural satellites orbiting full and dwarf planets in our solar system.
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169. Most of these orbit the "full" planets.
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_____ moons orbit the full-size planets of our Solar System.
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165. Four moons orbit the smaller dwarf planets of Pluto, Eris, and Ceres.
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Prior to 2006, ______ was the smallest planet.
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Pluto. After Pluto's reclassification as a dwarf planet, Mercury is now the smallest planet in our system.
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The ringed planets are:
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Saturn, Jupiter, Neptune, and Uranus. The gas giants all have rings.
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