Quiz
Astronomy I Final Exam
Create a free account to finish this quiz
Save your progress and see your final score.
Already have an account? Sign in
Questions in this quiz (80)
1The reason that Venus has the least variation in temperatures at its surface between day and night is...
- Athe apparent constant volcanic activity on its surface adds gases that fuel strong convection in the atmosphere and mixing of warm and cold air near the surface of the planet.
- Bthe higher atmospheric pressure mixes the air at ground level much more efficiently than on Earth (or elsewhere).
- Cthe planets slow rotation allows it to heat more slowly and evenly (and cool more slowly and evenly).
- Dthe planet's super-rotational mid-level winds spread heat out around the globe quickly and relatively evenly.
2Hollows are mysterious features found on Mercury that...
- Acould be places where sublimation or radiational erosion has occured on the planet's surface.
- Bcould be places where differences in the composition of crustal layers caused underground caverns to form when lower layers cooled and contracted.
- Ccould show the location of lava tubes buried under the planet's surface.
- Dcould be places in the bottoms of some craters where it is cold and dark enough for frozen water to exist.
- Ecould indicate locations where magma drained out of ancient volcanic chambers billions of years ago.
3Valles Marineris, the largest canyon in the solar system shows clear evidence that it was carved out of the Martian surface by huge volumes of flowing water early in Mars' history.
- ATrue
- BFalse
4Over the past 40 years, spacecraft visiting Mars have come across many forms of evidence that liquid water once existed on Mars' surface for extended periods of time. Which of the following is NOT one of those pieces of evidence?
- AThe first landers, Vikings 1 & 2 both spotted horizontally-layered features in the sides of nearby cliffs and hills that indicate that the layers were deposited down separately through sedimentation processes in ancient lakes or seas.
- BMars Global Surveyor spotted what looks from orbit like dried up runoff channels running downhill for 10s or even 100s of km in many locations on the surface of Mars.
- CCuriosity rover found beds of small rounded rocks mixed in layers of silt, sands and clay-like soils in what looks like a dried up stream or shoreline of an ancient lake in Gale crater.
- DMars rover Opportunity discovered round spherules called "blueberries" that, by their composition, most likely formed as condensates in shallow evaporating puddles saturated with minerals.
- EMars Global Surveyor spotted what appears to be terraced land formations that could once have been shoreline beaches at Holden crater, near the boundary between the northern lowlands and southern highlands of Mars.
5The spacecraft that imaged the entire surface of Venus through thick clouds with the ability to resolve objects down to the size of 100m was named_______________________________________.
- AMessenger
- BMariner 2
- CMagellan
- DVerenas 16
- EPioneer Venus
6The temperature swing between the hottest point on Mercury's daylight side and the coldest point on its nighttime side is the biggest that there is for any planet in our solar system. The difference in temperatures is on average _________ degrees Celcius (or Kelvin)!
- A812
- B460
- C600
- D392
- E740
7Mars has an atmosphere that is almost entirely carbon dioxide.Why isn't there a strong greenhouse effect keeping the planet warm?
- AThe greenhouse effect requires an ozone layer, which Mars does not have
- BMars is too far from the sun for the greenhouse effect to work
- CThe atmosphere on Mars is too thin to trap a significant amount of heat
- DMars does not have enough internal heat to drive the greenhouse effect
- EThere actually is a strong greenhouse effect, and Mars would be 35oC colder than it is now without it
8What is the name of the first spacecraft to land on Mars and carry out experiments?
- AVenera 10
- BMariner 9
- CViking 1
- DAres 3
- EMariner 4
9The Tharsis Bulge is one of the most interesting features on any of terrestrial planet in our solar system. From the follow statements that describe it, decide which ones are true.
1. it actually comprises an enormous single volcanic caldera on the surface of Mars
2. it has resulted in cracking of its planet's crust nearly 1/4 of the way around.
3. it is the youngest surface feature on Venus and may still be geologically active.
4. it is the size of North America and rises 10 km above planet surface surrounding it.- AOnly 3 and 4 are true
- BOnly 1, 2, and 4 are true
- COnly 2 and 3 are true
- DOnly 1 and 2 are true
- EOnly 2 and 4 are true
10The atmospheric pressure on Venus
- Ais much higher than on Earth.
- Bcauses variations in surface temperature.
- Cis about the same as on Mercury.
- Dis much lower than on Earth.
- Eshows an extreme change with the seasons.
11Who was the first astronomer to officially report seeing long faint straight lines on the surface of Mars, which led some to promote the idea that there was life on Mars?
- AGiuseppe Piazzi
- BGiovanni Schiaparelli
- CCamille Flammarion
- DUrbain Leverrier
- EPercival Lowell
12The largest difference between Mars' northern and southern hemispheres is that
- Athe southern is much darker, with large mare-like basaltic lava flows.
- Bthe southern appears older, with a significantly higher elevation.
- Cthe northern is higher overall, despite some high volcanoes in the south.
- Dthe northern has all the outflows and must have been much hotter.
- Ethe southern has a polar cap, but none ever forms in the north.
13Mercury shows a number of geologic structures on its surface. Features call "scarps" are probably the result of...
- Aearly plate tectonic activity.
- Bvolcanism.
- Ca tidal bulge.
- Dmeteorite bombardment.
- Ethe crust cooling and shrinking.
14Volcanoes on Venus share similarities with volcanoes on Mars (such as the giant Olympus Mons volcano). What do they have in common?
- AThey are of a type known as shield volcanoes.
- BThey can only form near the equator of their planet.
- CThey are much larger than typical volcanoes on Earth.
- DThey have been extinct for billions of years.
- EThey formed where continental plates collided.
15Which of the following statements about the Hellas impact basin on Mars is NOT true?
- AIt is located almost exactly opposite the location of the Tharsis Bulge on the globe of Mars.
- BIn it you'll find the lowest point (in elevation) on the Martian surface.
- CIt most likely formed during the Late Heavy Bombardment era in the solar system, about 3.9 - 3.2 Billion years ago.
- DIts formation led to a major redistribution of crustal material across the southern highlands of the planet.
- EIt is recognized as the largest impact basin in the solar system.
16If an observer was standing on the surface of Mercury watching the Sun cross the sky, 1 full Mercurian day (from one sunrise to the next) would actually take... (see lecture slides (part 1))
- A243 Earth days
- B58 Earth days
- C88 Earth days
- D3 Earth days
- E176 Earth days
17The main reason for the paucity of impact craters on Venus is that its dense atmosphere heats and breaks up most infalling asteroids & meteoroids before they do significant damage to the surface.
- ATrue
- BFalse
18Charged solar wind particles can bombard Mercury's surface at times because planet's protective magnetic field shuts down periodically, only to returns at again at irregular intervals.
- ATrue
- BFalse
19There are many interesting geologic features on Mercury. Which is its most prominent (conspicuous) one?
- Athe giant scarps that run across its surface
- BThe Caloris Basin
- CThe intercrater plains
- Dthe mysterious "Spider Formation"
- Ethe "Hollows" found on its surface
20Although different in many ways, the planets Mars and Venus have some characteristics in common. For example, the composition of their atmospheres share some similarities. Which of the gases below is the most abundant in each of the planets' atmospheres?
- Anitrogen
- Bmethane
- Cargon
- Dsulphur dioxide
- Ecarbon dioxide
21What did astronomers using Earth-based radar find in the polar regions of Mercury?
- Apolar caps of dry ice that vary seasonally, much like Mars
- Blarge mare basins, such as near our Moon's south pole
- Cauroral displays much like Earth's
- Dwater ice frozen in craters that never receive sunlight
- Erift valleys
22Why do scientists believe that pure water cannot exist in liquid form on the surface of Mars for more than a few minutes?
- AThe extremely low air pressure would prevent it from staying in a liquid state.
- BThe high concentration of oxidizing chemicals in much of the martian soild would react with it quickly and convert it into other compounds.
- CThe extremely cold temperature all over the planet would prevent water in liquid form.
- DThe strong UV radiation that irradiates the martian surface would vapourize it almost immediately.
23Venus' surface is characterized by large continent-like crustal formations. Which of the following are among those continent-like features?
1) Ishtar Terra 2) Arabia Terra 3) Aphrodite Terra 4) Coronis Terra- Aanswers 1), 3) and 4) only
- Banswers 1) and 3) only
- Canswsers 1) and 2) only
- Dall answers are continent-like features
- Eanswers 2), 3) and 4) only
24The series of radar-bright concentric cracks (rings) and oval ridges that surround many volcanic domes on the surface of Venus are known as:
- Acoronae
- Bdorsae
- Cfossae
- Dtesserae
- Epaterae
25Much of the water on Mars
- Ais thought to be in a layer of permafrost just below the surface.
- Blies in shallow pools near the poles.
- Cis deposited in expansive glaciers located on the slopes of Mars' giant volcanoes.
- Dis in the form of clouds.
- Eis locked in the seasonal ice cap.
26The two planets in the solar system that have the most tilted magnetic fields with respect to their axis of rotation are...
- AJupiter and Uranus
- BJupiter and Saturn
- CSaturn and Uranus
- DNeptune and Saturn
- EUranus and Neptune
27When the Jovian planets first formed inside the protosolar nebula, they are all believed to have been initially built from ice-rich planetesimals of about the same size. These planetesimals were large enough to have the gravity to then collect and retain large atmospheres of gas. Approximately how big were these ice-rich planetesimals?
- A2X Earth's' mass
- Ba fusion core like the Sun's, with hydrogen being turned into helium
- C10X Earth's mass
- D20X Earth's mass
- E5X Earth's mass
28The two outer jovian planets appear bluish in color because
- Amethane gas in their atmospheres absorbs red light well.
- Bhydrogen and helium are both blue in large concentrations.
- Cdust motes in their atmospheres scatter blue well, just as in our own blue sky.
- Dfrom their distance, the Sun would appear hotter and bluer than from Earth.
- Eammonia absorbs blue light well.
29The condensation of helium gas in Saturn's upper atmosphere and its precipitation down into the planet's lower layers is....
- Acausing Saturn's rotation rate to speed up
- Bcausing small periodic changes in Saturn's magnetic field
- Ccausing the formation of thick hazes in the outermost portions of Saturn's atmosphere.
- Dadding heat into Saturn's atmosphere, causing stronger convection and jet streams
- Eslowly changing the strength of Saturn's gravitational field.
30A strange long-lasting weather pattern found only near Jupiter's north pole is a hexagonal-shaped jet stream.
- ATrue
- BFalse
31Uranus shares many common features with the other Jovian planets in our solar system. Which of the following features does it seem to lack?
- Aa magnetic field of significant strength.
- Ba fast rotation rate (when compared to Earth).
- Ca ring system
- Dan atmosphere containing a significant amount of hydrogen gas.
- Ea significant internal heat source.
32With fast moving jet streams moving in different directions at different speeds in all the Jovian planets, astronomers have looked to the rotation of the planets' magnetic fields for an indication of each planet's true rate of spin. Which of the Jovian planets is the only one whose interior rotation if faster than the average rotation rate of the clouds around it?
- AUranus
- BNeptune
- CThey all have an interior rotation rate faster than the average rotation rate of the clouds in their upper atmospheres.
- DJupiter
- ESaturn
33Which of the following is the large moon of Neptune that has be observed to have a thin atmosphere of nitrogen and erupting geysers on its surface?
- AEnceladus
- BTitania
- CNereid
- DTriton
- ETitan
34Jupiter and the other jovian planets are noticeably oblate because
- AAll of the above are correct.
- Btheir powerful gravity is stronger at latitudes closer to their poles than latitudes closer to their equator.
- Cthey all have strong magnetic fields that deform their shape.
- Dthey are tidally distorted by the pulls from their larger satellites.
- Ethey are fluid bodies that are spinning rapidly.
35Among the Jovian planets in our solar system, which one(s) contain a significant layer of water, methane and ammonia (in supercritical fluid/ice form) as part of its/their make up?
- AOnly Jupiter and Saturn
- BOnly Saturn
- COnly Uranus
- DOnly Neptune and Uranus
- EAll Jovian planets have this
36Since the first robotic missions to visit Jupiter and Saturn, spacecraft have detected lightning strikes coming from thunderstorms inside both planets upper cloud layers. More recent studies by orbiters have given scientists a much better understanding of origin of these storms and their effects. Between the two planets, some common characteristics have been discovered. For example, the average thunderstorm lasts...
- A10 - 14 hours
- B3 - 4 weeks
- C3 - 4 days
- D6 - 8 hours
- E6 - 8 days
37What important observation led to the discovery of the planet Neptune in 1846?
- Aa small object was seen to have moved among the background stars during consecutive nights of observations of Saturn
- Ba small object was seen slowly crossing the disk of the Sun during routine solar observations a year earlier
- Ca dim object with small non-stellar disk was recorded in sketches of a comet by astronomer Johann Galle in the winter of 1845
- Da small non-stellar object was seen to appear in some early photographic images taken of the Andromeda galaxy but not in others
- Esmall deviations were noticed in the predicted orbit and speed of Uranus around the Sun
38Because the rotational axis of Uranus is tilted in a non-perpendicular fashion with respect to its orbit around the Sun it experiences seasons (for the same reason Earth does). However, the duration of each season on Uranus is quite different than on Earth. How long is each season on Uranus?
- A84 years
- B42 years
- C36 months
- D21 years
- E18 months
39Which robot spacecraft is the only one to have dropped a probe to take measurements inside the atmosphere of a Jovian planet?
- AHuygens
- BJuno
- CGalileo
- DCassini
- EVoyager 1
40Only the ______________ spacecraft was able to achieve a "grand tour" of the outer solar system, visiting all four Jovian planets.
- ANew Horizons
- BVoyager 2
- CVoyager 1
- DPioneer 11
- ECassini
41What is the source of Jupiter's intense magnetic Field?
- Athe ionized sulfur ejected into a torus around Jupiter by Io
- Bthe auroral displays in the polar regions, just like with Earth
- Cliquid metallic hydrogen swirling in the rapidly spinning mantle
- Dcharged particles trapped in Jupiter's solid iron core similar to Earth
- Ea liquid iron and nickel outer core, just like Earth's magnetic field
42The fastest winds in the solar system are found in the jet streams just above and below Saturn's equator.
- ATrue
- BFalse
43The different cloud decks in Jupiter's atmosphere are more compacted and less hazy than those in Saturn's atmosphere.
- ATrue
- BFalse
44The radio signals begin emitted in the regions of space around many of the Jovian planets is caused by...
- Atwisted or kinked magnetic field lines around the planets snapping back into place.
- Bsynchrontron radiation given off by charged solar wind particles accelerated in the planet's magnetic field.
- Cthe release of static charge that has built up in dust and ice particle in the planet's rings due to collisions.
- Dchanges in the planet's magnetic field induced by a flow of charged particles coming from eruptive events on one or more of the planet's moons.
- Esomething scientists don't yet understand.
45Jupiter's magnetosphere (extended magnetic field) is the largest structure known in the solar system. At its widest, it is has been measured to extend...
- A180,000,000 km
- B2 AU (300 million km)
- C1.5 billion km (the width of Jupiter's entire orbit)
- D3 million km
- E600,000,000 km (past Saturn's orbit)
46Jupiter's bright zones contain clouds streaming with thin layers of ________ ice crystals.
- Amethane
- Bwater
- Chydrogen
- Dhelium
- Eammonia
47Jupiter's continuously changing patterns of storms in its upper cloud layers are indicative of a tremendous amount of heat trying to escape from the planet's interior. According to our textbook, what is the the equivalent amount of power that is being released from Jupiter's interior every second?
- Aabout 60 milion atomic bombs worth of energy
- Babout 200 trillion 100-watt light bulbs worth of power
- Cabout 4 million billion 100-watt light bulbs worth of power
- Dabout 1 .5 million atomic bombs worth of energy
- Eabout 10,000 hydrogen bombs worth of energy
48Which of the following statements regarding Jupiter's Great Red Spot is NOT true?
- Ait has been observed spinning in Jupiter's atmosphere continuously for at least 500 years
- Bit is actually a high pressure region in the atmosphere, spinning like anticyclonic storms here on Earth
- Cunlike hurricanes here on Earth, its strongest sustained winds are out at the edge of the storm
- Dit slowly drifts both in latitude and longitude, disrupting other wind patterns for extended periods of time
- Ealthough its origin is unknown, it may be a type of chimney, bringing heat up from an anomolous source deep inside the planet
49Almost any image of Jupiter shows a series of light and dark bands of clouds running east to west in the planet's upper atmosphere that alternate by latitude. The bands that are slightly higher in the atmosphere and indicate areas of warmer upwelling gases from below are known as: (see lecture slides)
- Aband instabilities
- Bcondensation caps
- Cfestoons
- Dbelts
- Ezones
50Saturn's cloud layers extend much deeper than those of Jupiter because Saturn has...
- Aa lower density
- Bweaker surface gravity
- Ca larger core
- Da weaker magnetic field
- Emore mass
51Of all the satellites of the gas giant planets, which shows the oldest, most cratered surface (geologially dead since just after its formation)?
- AGanymede
- BEnceladus
- CCallisto
- DMiranda
- ETriton
52Which medium-sized moon of the gas giant planets shows the greatest diversity of surface terrain, which suggests that a violent impact broke it into many pieces and then it re-assembled as a bunch of mismatched pieces? (Hint: see lecture slides (part 2))
- AIo
- BGanymede
- CMiranda
- DTriton
- EEnceladus
53What best explains the darker colours of the ring systems at Uranus and Neptune?
- Athe ices there contain larger amounts of frozen nitrogen , carbon monoxide and ammonia
- Bwater ice crystals are denser out there and don't reflect light as well at the low temperatures
- Cthey are made up of very fine dust that does not reflect like as well
- Dthey are made up of pieces of captured comets that contain more rocky material.
- Ethey are coated in organic material that has been darkened by radiation
54The "Galilean Moons" include:
- AIo, Ganymede, Europa and Callisto
- BEnceladus, Hyperion, Europa and Ganymede
- CDione, Tethys, Mimas and Callisto
- DTitan, Triton, Callisto and Io
- EEuropa, Phoebe, Dione, and Tethys
55Ganymede is the largest moon in the solar system. It has complex surface terrain and many features common to terrestrial planets, including a thin atmosphere. Of particular interest are the many ridges and grooves on its surface. NASA scientists think they...
- Aare likely the result of volcanic processes that may still be ongoing.
- Bare probably due to the moon's rapid rotation.
- Chave grown considerably larger since the Voyager 1 spacecraft discovered them.
- Dhave formed within the last thousand years.
- Eare likely due to crustal tectonics motion (plate tectonics).
56The small and unusual moon Pheobe is responsible for creating the tenuous E-ring of icy crystals that make up Saturn's 2nd outermost ring.
- ATrue
- BFalse
57On the moon Triton, the erupting geysers of nitrogen gas...
- Aappear to have been the source for the moon's frozen nitrogen surface.
- Bappear to be the source for the continuing replenishment of liquids in the moon's numerous small lakes.
- Cappear to be increasing the moon's rotation rate.
- Dappear to erupt more-or-less continuously on the moon's surface.
- Eappear to derive their energy from the sunlight warming the surface rather than from internal heat.
58Which of Saturn's moons are known as "shepherd moons"
- AMimas and Enceladus
- BEpimetheus and Tethys
- CJanus and Rhea
- DPhoebe and Hyperion
- EPandora and Prometheus
59When Saturn is at either its spring or fall seasonal Equinox, its rings will (Hint: See Lecture slides, (part 3))
- Alie in the plane of the ecliptic.
- Bcontract closer to the planet's surface.
- Clie perpendicular to the plane of the ecliptic.
- Ddouble the planet's brightness as viewed from Earth.
- Eappear at their widest (most open angle) as viewed from Earth
60Which of the following statements about Titan's atmosphere is true?
- AIt is oxygen rich and has an ozone layer.
- BAlthough the composition of its lower atmosphere is primarily hydrogen (a combustible gas), electrical storms do occur frequently in its cloud layers.
- CWith the presence of methane and carbon dioxide, it has produced a runaway greenhouse effect - although at much colder temperatures.
- DThe presence of a thick atmosphere around the moon was discovered by the Voyager 1 spacecraft.
- EIt is similar to Earth's atmosphere in that it has a rain cycle and it is composed primarily of nitrogen.
61Certain Kuiper belt objects share a 2:3 mean-orbital resonance with Neptune (Neptune orbits the Sun exactly 3 times for every 2 times that they do) This means that Neptune gravitationally reinforces their orbits to be more stable than other types of Kuiper belt objects.) Because of this special characteristic, this group of objects has been given the specific name "________________________________" (hint: examine lecture slides (part 3))
- ATNOs
- BDwarf Planets
- CCentaurs
- DPlutoids
- EPlutinos
62How big is the average sized piece of debris orbiting within Saturn's rings? (Hint: See lecture slides (part 3))
- AThe size of a grain of sand
- BThe size of a marble
- CThe size of car
- DThe size of a house
- EThe size of a large snowball
63The average width of Saturn's magnificent main rings is 70,000 km from inside to outside edge. On average, how thick are they?
- A20 km
- B12 km
- C3 km
- D180 km
- E180 m
64Which of the following rings of Saturn lies closest to the planet?
- Athe A ring
- Bthe C ring
- Cthe B ring
- Dthe E ring
- Ethe F ring
65The main nine rings of Uranus were discovered in 1977 when they were detected by the Voyager 1 spacecraft's infrared camera as it approached Uranus.
- ATrue
- BFalse
66Which of the following observations about the medium-sized moons of the solar system is NOT true? (Hint: See lecture slides (part 2))
- AJupiter has no medium-sized satellites
- Bmany of these moons show fractures in their crust as a result of collisions or differential contraction due to cooling
- Cdarker surface marking exist on a number of these satellites because of organic compounds coating their surfaces changing colour as they have been exposed to radiation from space
- Dall medium-sized moons show evidence of early geologic activity when their interiors were warm
- Emany of these moons show evidence of a heavy bombardment by rocky debris early in the solar system's history
67Pluto rotates on its axis of spin at the same rate that its moon Charon does, which is also equal to the time that it takes them to orbit one another.
- ATrue
- BFalse
68Which planetary satellite has the youngest surface in the solar system?
- AEnceladus
- BCharon
- CEuropa
- DIo
- EAriel
69The moon Europa releases charged particles from its atmosphere which flow through Jupiter's magnetic field towards Jupiter's poles, generating a 5 million amp current in the process. (see lecture slides, part 1)
- ATrue
- BFalse
70The gap between Saturn's A and B rings is known as the Cassini Division. The gap is caused by...
- Agravitational interaction with moon Mimas.
- Bresonant waves created by convection (release of heat) from Saturn's upper atmospheric layer.
- Cicy ring particles continuously colliding with one another and slowly collapsing and collecting inside and outside that particular resonant orbit.
- Dtwo shepherding moons creating gravitational disturbances as they pass by on either side.
- Ean interference pattern in Saturn's magnetic field called a "Harmonic"
71Spectral analysis of the light reflected from Pluto's surface shows that it contains...
- Afrozen forms of nitrogen and methane with liquid hydrocarbons likely just under the surface
- Bliquid nitrogen, and frozen forms of carbon dioxide and ethane
- CFrozen forms of carbon monoxide, carbon dioxide and organic materials
- Dfrozen forms of methane, carbon monoxide and nitrogen
- Efrozen forms of water and hydrocarbon compounds with liquid methane likely just under the surface
72Which of the following provides the most significant evidence that Pluto currently has an internal heat source? (see lecture slides, Part 3)
- AWinds, clouds and snow crystals (weather) were detected in Pluto's thin atmosphere by the New Horizons spacecraft.
- BA weak magnetic field surrounding one hemisphere of the dwarf planet was detected by the New Horizons spacecraft.
- CImages from the New Horizons spacecraft show that Pluto to have very few craters across its surface.
- DThe New Horizons spacecraft spotted two relatively large volcanic vents on Pluto's surface.
- EImages by the New Horizons spacecraft show surface ices flowing, fragmenting and subducting in what appears to be a large impact basin.
73The Tidal Stability Limit (also known as the Roche Limit) is important for planets because below (or within) it...
- Aring systems cannot exist.
- Bis the only place where large moons can form around a planet.
- Cthere is a gap in a planet's magnetic field.
- Dhydrogen can only exist in its liquid metallic form.
- Elarge moons are torn apart.
74What best explains the strange bright vs. dark hemisphere difference on Saturn's moon Iapetus? (Hint: see lecture slides (part 2))
- ASaturn's gravity pulled more strongly on the rocky material within the moon when it was still molten/liquid inside, so the darker rocky material is layered closer to the Saturn-facing side
- Bthe side of the moon in shadow was much colder and sublimating water molecules escaping the moon's surface floated over and froze back out as surface frost on that side.
- Cmore historically recent volcanic activity on one side of the moon, caused it to darken with deposits and fallout debris, while the moon's otherside was basically unaffected.
- Dthe moon's leading side has swept up sooty debris from a cloud being given off by the moon next to it, Phoebe
- Ea collision with a much smaller comet/asteroid that was largely made up of organic compounds ended up coating one side of the moon with a thin tar-like layer.
75The Galilean moon of most interest to exobiologists is ___________________.
- AEnceladus
- BEuropa
- CGanymede
- DIo
- ECallisto
76The magnetic fields around Europa and Ganymede were found during flybys of the moons by... (hint: lecture slides (part 1))
- APioneer 10.
- BStardust.
- CVoyager 1.
- DGalileo.
- ECassini.
77Which of the following statements about Pluto's moon Charon is NOT true?
- ABecause of the weak magnetic field it produces, it likely has a subsurface layer of liquid water deep under its crust.
- BIt has a strange red north polar cap which may be made up of organic molecules captured from Pluto's leaking weak atmosphere.
- CIt appears to have a giant rift valley running at least half its surface - meaning it had tectonic activity at one time.
- DIt is more than half of the diameter of Pluto in size.
- EA weird big depression in its surface, looking like a mountain surrounded by a moat, could some form of cryo-volcano.
78According to measurements carried out by the Cassini spacecraft, about how much ice and salty water is estimated to be erupting into space from all the cryovolcanic vents on the moon Enceladus each second.?
- A700 tonnes per second
- B1600 tonnes per second
- C36 tonnes per second
- D200 kilograms per second
- E1200 tonnes per second
79On Saturn's moon Titan, there are liquid lakes on its surface that are made mostly of...
- Amethane.
- Bmetallic hydrogen.
- Cnitrogen.
- Dhelium.
- Ewater.
80The majority of moons orbiting the Jovian planets either travel with a retrograde motion around their parent planet, or move in a highly eccentric path, or in a highly inclined orbit, or some combination of these motions.
- ATrue
- BFalse
Information
- Description
- Questions based on Unit 7,8 and 9 assignments.
- Author
- Nya Niel
- Language
- English
- Views
- 31
- Rating
- No ratings yet Rate this quiz