Astronomy QZ11
Based on Jupiter's rotation period, approximately how many times does it spin on it's axis for one Earth day? 2 and a half times 4 times 1 time 9 times
2 and a half times
Which of these spacecraft was an orbiter mission? Pioneer 11 Cassini Voyager 2 Voyager 1
Cassini
How much energy does Jupiter emit compared with how much it receives from the Sun? It emits 10 times as much. It emits half as much. It emits 10 percent as much. It emits twice as much.
It emits twice as much.
Why is Neptune denser than Saturn? The extra mass of Neptune compresses its interior to a greater extent than that of Saturn. It has a greater proportion of hydrogen than Saturn. It has a different composition than Saturn including a higher proportion of hydrogen compounds and rocks. Its hydrogen is molecular whereas Saturn's hydrogen is atomic.
It has a different composition than Saturn including a higher proportion of hydrogen compounds and rocks.
The largest planet in our solar system is Uranus Jupiter Neptune Saturn
Jupiter
Which giant planet does not experience seasons? Jupiter Uranus Saturn Neptune
Jupiter
Which giant planet rotates the fastest on it's axis? Saturn Neptune Jupiter Uranus
Jupiter
The jovian planet that has the longest period of revolution is Saturn Neptune Uranus Jupiter
Neptune
Which previously unknown planet's location was predicted from mathematical calculations of orbital motions? Uranus Pluto Mercury Neptune
Neptune
Why do jovian planets bulge around the equator or have that squashed appearance? They are much more massive than the terrestrial planets. Their internal heat sources exert a pressure against the sides of the planets. Their rapid rotation flings the mass near the equator outward. Their large systems of moons and rings gravitationally attract the mass around the equator more.
Their rapid rotation flings the mass near the equator outward.
The planet that orbits on its side is Jupiter Saturn Uranus Neptune
Uranus
Which giant planet experiences the strangest seasons? Saturn Jupiter Neptune Uranus
Uranus
Astronomers believe that Jupiter's strong magnetic field is caused by electric charges from the moon Io the circulation of large reddish storms containing magnetic ammonia crystals a huge layer of metallic hydrogen inside Jupiter a core of molten iron and nickel
a huge layer of metallic hydrogen inside Jupiter
The cores of jovian planets are mainly composed of a solid mixture of rocky and icy materials under great pressure methane hydrogen and helium in the form of gas hydrogen and helium in the form of liquids
a solid mixture of rocky and icy materials under great pressure
Which of the jovian planets have rings? Neptune all of the above Jupiter Uranus Saturn
all of the above
Which of the following is NOT a correct statement about the ways the jovian planets differ from the terrestrial planets? the jovians are larger the jovians have rings while the terrestrials do not the jovians are made mostly of gas all the jovians have satellites around them and none of the terrestrials do the jovians are typically colder and further from the Sun
all the jovians have satellites around them and none of the terrestrials do
What do the magnetic fields of Saturn, Uranus and Neptune have in common? all three have their magnetic axes offset from the center of the planet all are tilted by about 50 or 60 degrees from the planet's axis of rotation all are weaker than the Earth's magnetic field all were discovered by spacecraft that flew by the planets all are caused by molten iron and nickel deep within each planet
all were discovered by spacecraft that flew by the planets
The belts and zones of Jupiter are alternating regions of charged particles in Jupiter's magnetic field cyclonic and anticyclonic storms alternating bands of rising and falling air at different latitudes names for different cloud layers on Jupiter
alternating bands of rising and falling air at different latitudes
How do astronomers think Jupiter generates its internal heat? nuclear fusion in the core radioactive decay internal friction due to its high rotation rate chemical processes by contracting and changing gravitational potential energy into thermal energy
by contracting and changing gravitational potential energy into thermal energy
How do astronomers think Saturn generates its internal heat? by raining dense helium droplets from higher to lower altitudes resembling the process of differentiation radioactive decay chemical processes internal friction due to its high rotation rate
by raining dense helium droplets from higher to lower altitudes resembling the process of differentiation
The primary clouds in the atmospheres of Jupiter and Saturn are composed of iron and nickel frozen ammonia crystals water vapor metallic hydrogen
frozen ammonia crystals
The element that can act like a metal when it is under tremendous pressure and is probably responsible for Jupiter and Saturn's magnetism is helium water gold hydrogen
hydrogen
The gas giant planets are mainly composed of lithium and helium helium and argon hydrogen and helium hydrogen and oxygen
hydrogen and helium
Which of the following statements about Jupiter's magnetosphere is TRUE? its source is a zone directly above the planet's cloudtops the magnetic field is 20 to 30 times weaker than the Earth's it completely covers the inner satellites of Jupiter and is one of the largest structures in the solar system it is tilted so that it is almost perpendicular to the equator of Jupiter
it completely covers the inner satellites of Jupiter and is one of the largest structures in the solar system
Which of the following statements about the Galileo probe that dropped into Jupiter is FALSE? it detected a lot of water and water vapor clouds on its way down it sent back information for a little less than an hour it was the first spacecraft to enter the atmosphere of a jovian planet it was slowed by atmospheric friction and a parachute
it detected a lot of water and water vapor clouds on its way down
A fundamental way to measure the rotation of Jupiter is to measure the changes in the planet's radio waves which are controlled by its magnetic field send a spacecraft like the Galileo probe into the top cloud layer determine how long the innermost moons take to orbit Jupiter determine the amount of methane in the planet's atmosphere
measure the changes in the planet's radio waves which are controlled by its magnetic field
The bluish color that makes the atmosphere of Neptune so beautiful to the human eye is caused by the interaction of sunlight with what gas? carbon dioxide methane oxygen helium
methane
The upper clouds in the atmosphere of Neptune are composed of methane carbon dioxide frozen water crystals liquid hydrogen
methane
Ices in the outer solar system refer to which compounds? carbon and nitrogen and neon oxygen and carbon and nitrogen oxygen and carbon and argon oxygen and carbon and sodium
oxygen and carbon and nitrogen
Which of the following does the composition of Jupiter mostly resemble? the Moon the Earth the Sun the asteroids
the Sun
What allowed the Voyager 2 spacecraft to make a tour of all four of the jovian planets in the late 1970's and the 1980's? the spacecraft stopped off to collect fuel on the satellites of each planet before proceeding to the next one the four planets were approximately aligned on one side of the Sun and we used the gravity of each planet to speed up the spacecraft to get to the next one in its path we used laser beams to propel the spacecraft into the outer solar system where sunlight is dim NASA had developed a completely new kind of rocket that could send the craft from planet to planet
the four planets were approximately aligned on one side of the Sun and we used the gravity of each planet to speed up the spacecraft to get to the next one in its path
One reason that we have such a complex system of belts/zones/storms in Jupiter's atmosphere is that ring particles rain down regularly the moon Io stirs up the atmosphere the magnetic field is not centered inside the planet rotates very rapidly
the planet rotates very rapidly
The amount of time required to send a spacecraft to orbit around one of the outer giant planets typically takes days to weeks months to years weeks to months years to decades
years to decades
