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72 terms

jovian planets

astronomy
STUDY
PLAY
the outermost planet is
neptune
the axial tilt of ____ is 92 degrees
uranus
_____ has a large moon that has a retrograde orbit
neptune
in 1610 when galileo first pointed a telescope at the sky he discovered _____'s four large moons
jupiter
this planet radiated more heat than it absorbs because of the friction of helium rain drops falling
saturn
europa orbits this planet
jupiter
four moons of this planet were first identified be galileo
jupiter
______'s magnetic field is produced in its rapidly spinning mantle of liquid metallic hydrogen
jupiter
while _____'s rotation axis is only tilted at 29 degrees, its magnetic fields are just as strange as its twins'
neptune
the only two planets which can transit the sun are mercury and _____
venus
______ is almost as big as jupiter, but only a third its mass
saturn
the surface of this planet was mapped by the spacecraft magellan
venus
triton orbits this planet
neptune
in the telescope, ______ shows the most turbulent atmosphere with changes easily seen even with amateur telescopes
jupiter
in brightness, jupiter is second only to the planet ______ most of the time
venus
titan orbits this planet
saturn
this gas giant is widely regarded as earth's protector
jupiter
uranus and _______ are very similar in size
neptune
in 1781, willian herschel discovered the green disk of _____ as the first telescopic planet
uranus
the planet _____ has the least variation in temperatures on the surface between day and night due to its carbon dioxide atmosphere
venus
changes in the predicted motion of ____ led to the search for an eighth planet
uranus
the spacecraft galileo orbited _____ for 8 years
jupiter
at the poles of ______, there are 42 earth years of constant daylight, then the same length of time of constant darkness
uranus
the most famous and long lasting storm in the solar system is on
jupiter
which is the least dense planet
saturn
tje spacecraft cassini is in orbit around
saturn
neptune was discovered as a result of perturbations observed in the orbit of
uranus
io orbits this planet
jupiter
voyager 1 visited jupiter and
saturn
voyager 2 did not visit
mercury, venus, mars
this planet has many rings made of ice chunks
saturn
which of these moons has the densest atmosphere
titan
a moon that goes inside the roche limit will
break apart because of tidal forces
jupiter is noticably oblate because
it rotates rapidly
which spacecrafts went to jupiter
voyagers, cassini galleleio
what is the source of jupiter's excess energy
the slow escape of gravitational energy which heated the planet's interior
what is thought to cause io's volcanism
jupiter's tidal stresses
the roche limit is the point at which
tidal forces stronger than gravity
what mission landed on titan in early 2005
cassini-hyugens
the only spacecraft to have visited uranus and neptune was
voyager 2
adams and leverrier predicted the position of neptune, based on its perturbations of
uranus
neptune and uranus have a bluish tint because
methane absorbs red light
the most abundant component of the atmospheres of uranus and neptune is
hydrogen
which planet has the great dark spot in 1989 but had it lost by 1995
neptune
what is the predition for the future of triton
it will get below roche limit and and break up then turn into a ring
a moon with a smooth uncratered surface would imply
the surface is new
titan is an interesting moon because
dense atmosphere
the most abundant element in saturn's atmosphere is
hydrogen
the asteroid belt is believed to be debris left over from the age of formation of the solar system; the tidal effects of _____ probably prevented formation of a major planet there
jupiter
rocky debris larger than 100 meters in diameter seen to be orbiting the sun are called
asteroids
small icy bodies in the solar system which travel about the sun in highly eccentric orbits and come from all directions are
comets
we new recognize that the largest kuiper belt object is
eros
discovered in the 1990s, the _____ is a vaster, darker version of the more famed asteroid belt between Mars and Jupiter
kuiper belt
we find that near perihelion, pluto temporarily develops an
atmosphere
few _____ actually strike the earth, because most are small and burn up in the atmosphere
meteoroids
most meteor showers occur _____ as we again intersect the comets orbit
annually
the nasa orbiter that ultimately landed on the surface of the asteroids eros was
NEAR shoemaker
what is the typical size of most known asteroids
a few km
what is the defining property of the trojan asteroids
in jupiter's orbit, 60 degrees ahead/behind it
pluto was discovered
in the 20th century
the k-t boundary event happened about 65 million years ago when an asteroid the size of deimos struck the ____ peninsula
yucatan
the apollo and aten asteroids have orbits that
cross the earth's orbit
the oort clous is thought to be
spherical, further than kuiper, a lot of comets
long period comets are thought to reside mainly in the
oort cloud
the largest kuiper belt object is
eros
meteorites are valuavke to astronomers because
they may provide evidence about the process in which the solar system was born
the planet uranus is
barely visible with the naked eye
which statements about the magnetic fields of uranus and neptune is false
both pass directly through the cores of their planets, like all other fields
studying the magnetosphere of the jovians has allowed us to measure their
rotation rates
the rotation period of uranus was measured through
observations of radio signals associated with its magnetosphere
which of the following objects would be found on the moon's surface
meteorites
which of the following is true about the seasons of uranus
the uranian rotation axis produces some extreme seasonal effects