jovian planets

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astronomy

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

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