Arizona State University (ASU) MKT 300 Marketing and Business Performance Exam 1 Practice

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• Laboratory measurements show a spectral line at 424 nanometers for hydrogen. If we observe a nearby galaxy and find the same spectral line at 421 nanometers, what can we conclude?
• The spectra of most distant galaxies show redshifts. That means that their spectral lines:
• The current number of confirmed exoplanets is closest to:
• Planets detected via the Radial Velocity (Doppler) technique have been mostly
• What advantage arises from combining transit and Doppler measurements?
• Which description best characterizes the core of Jovian planets?
• A planet is detected via the Radial Velocity (Doppler) technique. The velocity change of the star is a measure of
• Which claim must be false?
• I am outdoors standing up straight. The Sun is directly over my head. Where might I be?
• If Mars is moving through Virgo now, what is the approximate time until it returns to Virgo?
• If Venus orbited Saturn, Venus would be considered:
• Which of the following would decrease Io's degree of volcanic activity?
• Imagine you fly far from Earth toward the North Celestial Pole and look back at Earth. What fraction of Earth's surface could you see (assume you can 'see' both dark and illuminated portions)?
• Which factor best explains why smaller terrestrial bodies cool faster than larger ones?
• Which region contains remnants from the early solar system?
• The sun produces most of its energy by:
• Olympus Mons is a shield volcano on which planet?
• Approximately how many stars are in the Milky Way Galaxy?
• Why is the radial velocity method biased toward detecting hot Jupiters?
• Which planet is known for having its axis tilted dramatically to the side?
• Which factor primarily made hot Jupiters easier to detect with the radial velocity method in early exoplanet surveys?
• Tides are most pronounced during which lunar phase(s)?
• Approximately how many orbits does the Moon complete around the Earth in one year?
• What is the carbon cycle?
• Where does a comet in a highly eccentric orbit spend most of its time?
• Imagine three moons which are in an 2:3:6 orbital resonance. If the longest orbital period among these moons is 12 days, what is the shortest orbital period?
• Rocks on the surface of another solar system body were radiometrically dated and show 1/16 of the original amount remaining, with a half-life of 100 million years. Which object are these rocks likely from?
• Why does Mars have such a thin atmosphere?
• Which of the following surprises emerged from the earliest discoveries of exoplanets?
• Neptune is approximately how many times farther from the Sun than Mercury?
• In planetary formation terminology, what is a planetesimal?
• If two objects are separated by half the distance between them, how does the gravitational force between them change?
• During the collapse of a rotating cloud, which principle explains why it spins up?
• Which of the following statements is both true and falsifiable?
• How does Jupiter's core compare to Earth?
• Which observation best supports the conclusion that Mercury's surface is older than Venus'?
• In the early solar nebula, which condenses first in the hotter inner regions?
• If you observe the first gas through the second gas, what spectrum would you detect?
• Which statement best describes tidal heating in moons?
• The main asteroid belt is best described as:
• Exoplanets are usually very hard to see directly because:
• Which factor is most responsible for a terrestrial planet remaining geologically active over long timescales?
• From the perspective of someone living on the Moon, how often does the Earth rise above the Moon's horizon?
• Which statement is true about the orbital planes of the major belts?
• Which observation most strongly supports Saturn rings being composed of independently orbiting particles rather than a solid sheet?
• Recently, astronomers announced the discovery of a terrestrial planet orbiting the star Alpha Centauri B, which is about 4 light years from the Sun. Which statement is true?
• If spectral lines shift toward shorter wavelengths, the object is moving
• During core fusion in the Sun, which particle type is emitted in significant numbers?
• The main difference between asteroids and comets is that:
• The fact that some asteroids are very fragile is important because it tells us that:
• Suppose we discover a planet orbiting a distant star. Which measurement would allow us to determine the planet's atmospheric composition most accurately?
• Standing at the North Pole during the summer solstice, which statement best describes your view of stars?
• Which principle explains why planets tend to orbit roughly in the same plane around a star?
• What makes Polaris special?
• Rank the following five terrestrial bodies in order from smallest to largest by diameter: Mercury, Moon, Venus, Earth, Mars.
• Imagine a new planet is discovered orbiting a star similar to the Sun at 1 AU. This planet is found to be about half the mass of Earth. From this information, what is the most likely summary about the planet?
• What would happen if the Space Shuttle were launched with a speed greater than Earth's escape velocity?
• According to Kepler's third law, which statement is true?
• Jupiter is often called a gas giant. This name is:
• Which statement describes a significant difference between Earth's and Venus's volcanoes?
• What are greenhouse gases?
• Compared to a hot blackbody, a cold blackbody is:
• Imagine that we detect an exoplanetary system in which the orbital periods of the planets are X: 56 days, Y: 104 days, Z: 230 days. What can we conclude from this information?
• In planetary classification, which statement describes 'not clearing its neighborhood'?
• Why do asteroids and comets differ in composition?
• Which of the following statements does not use the term light-year in an appropriate way?
• Approximately how many orbits does the Earth complete around the Sun in one year?
• Why are there no impact craters on the surface of Io?
• If a radiometric dating sample has decayed to 1/4 of its original amount and the half-life is 100 million years, how many half-lives have passed?
• Which factor explains why there isn't a solar eclipse at every New Moon?
• Roughly how many constellations of the zodiac does the Sun move through in six months?
• Compared to the gravity on Earth, the amount of gravity in space is:
• Imagine we send a radio signal to a star 1000 light-years away and the star hosts intelligent life that could respond. What is the earliest possible time we could receive a reply?
• Which statement about nebular theory is true?
• How do astronomers usually determine the sizes of exoplanets?
• Fifty (50) AU is closest to the distance between the Sun and which body?
• Which statement correctly contrasts fusion and fission?
• Which of the following lists contains ONLY moons thought to have significant amounts of liquid water beneath their surfaces?
• Why are there tidal bulges on BOTH sides of Earth's oceans?
• The Sun's current fusion reaction is best described as
• If an exoplanet does not produce a transit, this is most likely because:
• The cores of terrestrial planets are metal-rich while their crusts are lighter elements. Which explanation best accounts for this?
• Which solar-system configuration would present the biggest challenge to the nebular model?
• Which statement best describes the frost line in the solar nebula?
• Which statement describes the Sun’s primary energy production today?
• How does the mass of the star affect the observable Doppler wobble?
• Which statement best explains how the Doppler method detects a planet's influence on its star?
• Compared to the Oort Cloud, the Kuiper Belt is typically characterized by which statement?
• If you heat a gas so that collisions are continually bumping electrons to higher energy levels, when the electrons fall back to lower energy levels the gas produces
• What is the most abundant gas in Titan's atmosphere?
• If extra carbon dioxide were released into Mars' atmosphere over long times, what would happen in the long term?
• Which of the following discoveries about another solar system would most strongly challenge the nebular hypothesis for the formation of solar systems?
• Which option best explains why Venus lacks a carbon cycle, according to the list?
• If two stars have the same surface temperature, how does their total energy output compare?
• What information about an exoplanet is primarily obtained from transit depth?
• If Earth's orbit were a perfect circle instead of an ellipse, which of the following would occur?
• According to our theory of solar system formation, which law best explains why the solar nebula spun faster as it shrank in size?
• If we moved the Moon three times as far from the Earth as it is now, the force of gravity between them would:
• Which statement best describes how jovian planet interiors differ?
• Which of the following is the main reason Pluto is no longer considered a planet?
• Compared to the distance between the Earth and the Sun, the distance between the Earth and Saturn is approximately:
• Which planetary property most directly affects a planet's ability to retain deuterium in its atmosphere?
• Which factor is a key determinant of a planet's geological activity?
• Why are Europa, Enceladus, and Ganymede of particular interest to scientists?
• Kepler's second law implies planets move faster when they are closer to the star. Which is the correct statement?
• If a planet has the same mass as Earth but is 1.5 times larger in radius, what is its approximate surface gravity relative to Earth?
• At any given moment, is the Moon's phase the same for observers around the world?
• 50 AU is closest to the distance between the Sun and which solar-system body?
• Compared to the average distance from the Sun to Mercury, Neptune's distance is approximately:
• Which of the following show evidence of ancient river beds?
• Which process is part of Earth's carbon cycle?
• A red-colored star is typically cooler than the Sun. Which statement correctly reflects this?
• In the Drake equation as shown, which term represents the fraction of planets that actually develop life?
• The light curve of a transiting exoplanet can show two dips per orbit. This is usually because:
• In a solar system with a 1:3:5 orbital resonance among three planets, when the fastest planet completes one orbit, how many orbits does the slowest planet complete?
• Which Mars discovery among the following has not actually been made yet?
• A spectrum that shows a smooth continuum with no lines is most likely produced by which source?
• As a hot object's temperature increases, the color of its glow shifts from red toward blue. Which statement is true?
• Due to the Doppler effect, a warm blackbody moving towards an observer at high velocity will appear.
• Why do the planets and the Sun appear to travel together along the ecliptic plane?
• Which statement about planetary orbital directions supports the nebular hypothesis?
• What is a fundamental reason we cannot see interstellar infrared light with the naked eye?
• Which statement best explains why the solar system's planets are observed to orbit the Sun in the same direction?
• Which planet is described as having a powdery surface that craters easily, in contrast with Earth and Venus?
• According to the nebular hypothesis, why do the planets orbit the Sun in the same direction?
• The transit method of planet detection works best for
• An absorption spectrum is characterized by which feature?
• Why does Venus lack a carbon cycle, according to the listed explanations?
• Interstellar dust clouds emit mainly infrared light. Why can't we see this light in the sky with our naked eyes?
• If you go out tonight and you see that the planet Mars is just about to move out of the constellation Virgo, how long would you have to wait before you could see it in that constellation again?
• Why are there more craters on the Moon than the Earth?
• The Sun's visible spectrum is best described as:
• Which statement best describes the spectrum an asteroid would emit?
• Heat escapes from a planet's surface into space primarily by which type of radiation?
• To observe the largest fraction of the celestial sphere over the course of a year, where should you place a telescope?
• Which description best characterizes hot Jupiters?
• Which of the following best describes the strategy astronomers currently use when searching for extraterrestrial life?
• Why should we be surprised to find that Mercury has a magnetic field?
• Which planet has the least substantial atmosphere?
• What does the Doppler method primarily measure to detect exoplanets?
• Which Moon phase produces the highest high tides?
• Which statement about the ecliptic plane is true?
• During the THIRD QUARTER Moon phase, from which location/time would you NOT be able to see it?
• You see the Moon high in the sky at 9 AM. Which phase would you observe?
• The main asteroid belt is best described as which of the following?
• Which description correctly identifies comets as leftovers from the early solar system?
• If a terrestrial planet has a small number of craters, this implies:
• According to Fermi's Paradox, we might reasonably expect our galaxy to be full of intelligent life because:
• Which type of spectrum is produced when atoms in a hot, low-density gas emit light at specific wavelengths?
• The dark lines seen in a star's spectrum indicate
• If the redshift of star A is 10% greater than that of star B, what can you conclude about their relative motion? (Assume both redshifts are positive.)
• Why is the sky blue during daytime on Earth?
• Absorption features in the Sun's spectrum are caused by
• If two stars are the same size and star X's spectrum peaks at a shorter wavelength than star Y, which statement is true?
• Transit observations provide direct information about which feature of a planet's atmosphere?
• Which statement accurately describes a comet?
• According to the nebular theory, which statement best describes asteroids and comets?
• Which planet's composition is closest to the Sun, highlighting a common misconception about planetary materials?
• Which of the following is FALSE about the Doppler method for finding exoplanets?
• Which statement is NOT implied by Kepler's laws of planetary motion?
• If Earth's atmosphere warms slightly, which outcome is expected based on the discussed scenario?
• Which property is more typical of asteroids than comets?
• Which statement about the speed of gamma rays relative to radio waves is correct?
• Which observation would most strongly support the nebular theory?
• The total number of confirmed detections of Earth-size exoplanets (less than 1.25 Earth radii) is approximately:
• A Jovian planet has three moons of similar size, named Eee, Iye, and Re. The innermost of the three, Eee, has large portions of un-cratered surface, while Re and Iye are heavily cratered. This is most likely because:
• What is our current best understanding of life beyond Earth?
• Planets emit most of their thermal radiation in which wavelength range?
• If hydrogen spectral lines appear at shorter wavelengths than the Sun's lines, what can we conclude about the other star?
• Which phenomenon is typically detected using underground observatories?
• Two billion years ago, how did the Sun's chemical composition differ from today?
• Which discovery would present the biggest challenge to the nebular model of solar system formation?
• Which statement best explains why exoplanets detected by the radial velocity method are not typically detected by the transit method?
• The chemical composition of Jupiter is closest to that of which object?
• If we could view the stars from the surface of Jupiter's moon Europa with the naked eye, how would they appear compared to Earth?
• Which of the following objects is going to be visited (landing, orbit, or flyby) for the first time in 2015?
• In what way are Venus and Earth most similar?
• Which property is directly determined by the transit method?
• According to Kepler's laws, a planet moves fastest when it is closest to the Sun. Which option expresses this correctly?
• Emily is in orbit around the Earth. Which best explains why she feels weightless?
• Which statement about Mars' CO2 is supported by the material?
• What latitude corresponds to the Arctic Circle?
• Which spectrum shows dark lines due to absorption by a cooler gas in front of a light source?
• From a transit light curve, the depth of the dip most directly informs us about the planet's:
• Mars was perhaps once a lot like Earth. Why is this no longer the case?
• Most of the energy we receive from the Sun is produced by
• According to Fermi's Paradox, we should be surprised that we have not been contacted by extraterrestrial intelligences because the time taken to cross our galaxy in an advanced spaceship is:
• Which process powers the Sun's energy according to the described material?
• Heat escapes from a planet's surface into space by thermal radiation. Planets radiate almost entirely in the wavelength range of the
• According to Kepler's third law, if a planet's average distance from the Sun increases, what happens to its orbital period?
• In the Drake equation as shown, which term represents the fraction of civilizations that develop detectable technology?
• Which sequence best describes how matter in the Universe is recycled?
• Which statement best explains why jovian moons are more geologically active than the Moon or Mercury?
• Which statement best explains why smaller terrestrial worlds have cooler interiors today?
• Which factor is MOST responsible for determining whether a terrestrial planet will be geologically active?
• If the Sun suddenly doubled in temperature, what happens to its habitable zone?
• Which observation on Mars serves as evidence that water once flowed there?
• Which process is primarily responsible for Io's volcanic activity?
• Two planets of the same age orbiting the same star. Planet A has a lower mass and a higher deuterium-to-hydrogen (D/H) ratio than Planet B. Which explanation is most likely?
• From the perspective of someone living on the Moon, how often does the Sun rise above the Moon's horizon?
• On Venus, the runaway greenhouse effect has occurred despite the absence of humans on the planet. Why, then, do we think global warming on Earth is caused by human activity?
• At present, what is the primary way that the search for extraterrestrial intelligence (SETI) is carried out?
• What do asteroids and comets have in common?
• Which statement best reflects our current knowledge about the term flife in the equation Np × flife × fcivilization × fnow?
• What is required to confirm a planet via the transit method?
• The resonance among the moons of Jupiter means that:
• Over a year, how often are the Sun and Moon above the horizon at the same time, as seen from Toronto?
• Early exoplanet discoveries revealed that many exoplanets are what kind of planets with short orbital periods?
• Compared with terrestrial planets, which property is more characteristic of Jovian planets due to their greater mass?
• According to Kepler's Laws, if two planets orbiting different but identical stars have the same orbital period, they must also:
• A planet similar to Earth, orbiting a Sun-like star at 1 AU with about half Earth's mass, is most likely to have which atmospheric characteristic?
• At which lunar phase(s) are tides least pronounced (e.g., the lowest high tides)?
• The fact that most moons always show the same face to their planet is explained by which mechanism?
• Which statement about exoplanet systems would most strongly support the nebular hypothesis?
• Which statement best describes the relationship between nuclear fusion and fission?
• A meteorite made mainly from volcanic rock was found. Where did it most likely originate?
• On the horizon all day long without rising or setting. Where am I?
• Emission lines in a spectrum are due to
• Which feature would contradict the nebular theory of planet formation?
• Approximately how many exoplanets have been confirmed?
• If the Sun's core were heated slightly above its current temperature, which sequence would occur?
• Which planet displays the strongest greenhouse effect?
• In the transit method, which observable primarily yields the planet's size?
• Which statement about stellar spectra is false?
• What is the observational signal used by the Doppler method?
• Which of the following BEST describes why Mars appears red to the unaided eye?
• Io is a moon of which planet?
• Which factor is MOST responsible for determining whether a terrestrial planet will be geologically active?
• The nebular theory predicts all but one of the following.
• Which statement best describes the radial velocity method's detection biases?
• Which of the following best explains Mercury's crater record persisting?
• A blue shirt looks blue because it:
• Which method can determine the exoplanet's size?
• What term describes gravity-driven differentiation of materials by density during planetary formation?
• Why do scientists suspect a giant-impact event formed the Moon?
• A newly discovered planet has a diameter six times that of Earth and orbits its star at a distance of 7 AU. Which feature would you NOT expect this planet to have?
• Which statement about the Moon is FALSE?
• What does the term falsifiability mean in scientific hypotheses?
• Which statement accurately describes the frost line in the solar system?
• The radial velocity method of exoplanet detection preferentially finds planets that have:
• The Doppler method for finding exoplanets is least efficient at finding which type of planet?
• Which statement best explains why the Moon has no substantial atmosphere?
• From a distant vantage point, what fraction of Earth's surface could you see at once, counting both lit and unlit portions?
• Which statement best describes a dwarf planet?
• When does a comet have its longest tail and largest coma?
• Betelgeuse is a bright red star. Based on its color alone, what can you conclude about its surface temperature relative to the Sun?
• If a planet orbits a Sun-like star with an orbital period of about 0.5 years, its semimajor axis is approximately how many astronomical units?
• How do astronomers usually determine the masses of exoplanets?
• To produce an absorption spectrum, what two objects must be present?
• Which occurrence is NOT part of Earth's Carbon Cycle?
• What does redshift tell us about the motion of distant galaxies?
• What is the lowest possible one-way communication delay time between Earth and Mars, given that Earth is 8 light minutes from the Sun and Mars is about 12 light minutes from the Sun?
• Which of these pairs of objects are closest to one another in overall chemical composition?
• Why does Mercury retain more impact craters than Earth and Venus?
• Hotter stars peak at shorter wavelengths in their spectra, causing them to appear bluer.
• Which statement best explains why there are tidal bulges on both sides of Earth?
• How many third-quarter moons should we see in an average year?
• Observation through transmission spectroscopy is used to detect what about exoplanets?
• If a material is opaque to ultraviolet light, we mean that it
• An object is spherical, rocky, roughly half Mercury's size, and located in the asteroid belt. Which classification best fits this object?
• The difference between fusion and fission is that:
• In the early days of exoplanet discovery, almost all of the planets found were hot Jupiters. Why?
• Why is the core of the Sun extremely hot?
• Scientists are attempting to fuse hydrogen nuclei into helium in a laboratory as a source of energy. Best description?
• Which pair of moons is commonly cited as having potential subsurface oceans beneath icy crusts?
• Which of the following best explains why Mercury has far more craters than Earth or Venus?
• A star emitting a continuous spectrum shines through a cool interstellar cloud composed primarily of hydrogen. The cloud is falling inward toward the star (and away from Earth). Which best describes the spectrum seen by an observer on Earth?
• In the early solar system, gas giant planets formed outside the frost line because outside the frost line, what enabled ices to condense?
• Which orbital configuration enhances the Doppler signal?
• A blackbody in thermal equilibrium emits radiation whose spectrum is determined primarily by which factor?
• If half-life is 25 million years and measured amount is one-fourth of original, how old is the rock?
• Why are inner planets denser than outer planets?
• Which material is most abundant in the rocky planets' cores due to early condensation in the solar nebula?
• If a terrestrial planet has a low crater density, what does this most strongly imply?
• Rank the five terrestrial worlds in order of size from smallest to largest.
• Suppose you see a crescent Moon tonight from Toronto. What phase would someone living in China see on the same night, given China is well north of the equator?
• Which statement about the Moon's past geological activity is true?
• Which method would you use to determine an exoplanet's mass by analyzing the star's wobble?
• Which factor best explains why the Moon shows less geologic activity than jovian moons?
• Imagine Earth and Mars start off with the same ratio of deuterium to hydrogen (D/H). Which best explains why Mars' ratio will increase over time, relative to Earth's?
• Why are the cores of terrestrial planets composed of heavy elements while their crusts are made of lighter elements?
• In the Drake equation as shown, what does fnow represent?
• Which moon is likely to experience the weakest tidal force from its planet?
• How can you decide whether a spectrum is emission or absorption?
• Which of the following is an important difference between comets and asteroids?
• Which of the following statements about the belts of small bodies is not true?
• Dwarf planets orbiting beyond Neptune differ from Kuiper belt comets mainly in which characteristic?
• Why does the Sun appear almost white to the human eye?
• Why aren't small asteroids spherical in shape?
• The lowest tides occur when the Moon is in which phase?
• Which terrestrial body has a size most similar to the Moon?
• At extremely high temperatures, which phase of matter is most accurate?
• Most of the exoplanets we have found to date are:
• Atoms of different elements have unique spectral lines because each element
• What does the frost line separate in the early solar system?
• What is differentiation in planetary geology?
• A rotating spherical gas cloud will collapse into a flat rotating disk because:
• The Sun's visible spectrum is best described as:
• The number of jovian planets in our solar system with rings is:
• Which of the following worlds have humans walked on?
• Venus currently lacks which feature that can account for how different its surface temperature is from Earth's?
• Imagine a moon outside the ring system of a jovian planet. How can such a moon open a gap in the rings without leaving its own orbit?
• Doppler shifts in a star's spectral lines are used to measure what aspect?
• If a radiometric dating sample shows 1/16 of its original amount remaining and the half-life of the isotope is 100 million years, how long has elapsed?
• What observation most strongly supports Saturnb rings being composed of many independent particles that orbit Saturn?
• The transit method can determine which two properties of an exoplanet?
• On a scale on which it takes one step to go from the Sun to Earth, approximately how many steps would it take to go from Earth to Pluto?
• The transit method for finding exoplanets can tell us:
• During the FULL Moon phase, from which location/time would you NOT be able to see it?
• Saturn's rings have what looks like extremely dark bands. What are they?
• The Sun's energy is generated mainly by which process?
• When you wear a blue shirt, why does it look blue?
• Rank the terrestrial planets by average surface temperature from coldest to hottest.
• Imagine two astronauts in a circular orbit around the Earth moving at 20,000 km/h. They have the same mass and are aligned so that their bodies are at the same distance from Earth as one another. They are holding hands. If they let go of each other's hands, what will happen to them?
• Which statement explains why Mercury has many more tall cliffs than the Moon?
• Which form of electromagnetic radiation has the longest wavelength?
• For which solar system object do we observe a redshift due to the Doppler effect when it is moving away from us?
• Which description most accurately describes the structure of planets like Jupiter and Saturn?
• Which mechanism commonly explains gaps in planetary ring systems?
• Which observation would most strongly indicate that a planetary system did not form from a single spinning disk?
• Where on Earth would you have to stand to see the whole celestial sphere at night over the course of a year?
• What is the leading theory for the formation of Earth's Moon?
• Kepler's second law implies that a planet's orbital speed is greatest when it is closest to the Sun. Which of the following options expresses this idea correctly?
• Which Jovian moon is thought to contain large quantities of liquid water?
• The Moon's phase is the same for all observers around the world.
• The planets in our solar system which have rings are:
• Light takes about 8 minutes to go from the surface of the Sun to the Earth. How long does it take to travel from the core of the Sun to the surface of the Sun?
• The Doppler method for detecting exoplanets relies on which observation?
• Which of the following changes would shorten the time period between high tides the MOST, as seen by a stationary observer on Earth?
• Beyond the frost line in the solar nebula, what was the effect of low temperatures on planet formation?
• Which of the following emits a continuous spectrum of light?
• Why isn't Earth's atmosphere mostly hydrogen?
• How far from the Sun is Neptune?
• Why do we see many hot Jupiters around other stars, while none in our solar system?
• Which statement best describes why spectral lines appear at specific wavelengths for elements?
• What are the lunar maria?
• Which region's objects do not orbit in nearly the plane of the planets?
• Which body is most similar to our Moon in terms of overall physical properties (size and composition)?
• Kepler's second law implies that
• The Milky Way Galaxy has a diameter of approximately
• Which energy source is a major ongoing contributor to heating the interiors of terrestrial planets today?
• What happens to CO2 from volcanic activity on Earth on long timescales?
• Which statement is evidence for geological activity of Mars?
• Dwarf planets beyond Neptune differ from Kuiper belt comets mainly in which feature?
• Which statement about Venus and Earth is most accurate?
• What is Jupiter's Great Red Spot?
• What caused the runaway greenhouse effect on Venus?
• If two stars are the same size and star X's spectrum peaks at a shorter wavelength than star Y, which conclusion is most accurate?
• If you stand at the South Pole at night, which statement describes your view of Polaris, the North Star?
• At the centre of the Sun, fusion converts hydrogen into
• The lowest tides occur when the phase of the Moon is:
• What does the radial velocity method primarily measure?
• How do astronomers usually determine the densities of exoplanets?
• Which region contains large proportions of ice?
• Which statement about the planet Venus is consistent with observations that support the heliocentric model?
• Which planet's climate demonstrates that greenhouse effects can occur without human activity?
• Which factor increases the geometric probability that a planet transit will be observable from Earth?
• Gamma rays are a form of electromagnetic radiation more energetic than radio waves. What can we say about gamma rays?
• Io is much smaller than Venus, yet it is much more volcanically active. Why?
• Which equation best explains how the Sun generates energy?
• If two planets have the same D/H ratio and formed at the same time in the same solar system, which property might they share?
• Which internal energy source is the most important in continuing to heat the terrestrial planets today?
• The color of a light wave is determined by its:
• Which planet can we see occasionally transit across the face of the Sun?
• Which process is most similar to the process that transports energy from the Sun to the Earth?
• Which property of an exoplanet can only be accurately measured by combining radial velocity and transit observations?
• Which statement best summarizes interior differences among jovian planets?
• How does the Sun produce energy?
• Why is Mars so cold despite the atmosphere being 95% CO2?
• In a laboratory, two blackbodies heated until one glows blue and the other shines red. What can we say about the two objects?
• Which statement about Polaris is true?
• Grass appears green because
• Which description best characterizes Jupiter's Great Red Spot?
• If an inner moon has a period of 30 days and is in a 3:2 resonance with a distant moon, what is the distant moon's period?
• Where is the asteroid belt located in the Solar System?
• The Radial Velocity (Doppler) technique only provides a measure of the minimum mass of a planet because
• If two planets formed in the same solar system and share the same D/H ratio, which property would likely be similar?
• The transit method detects exoplanets by observing which phenomenon?
• How does the greenhouse effect work?
• Which observation did Galileo make that was inconsistent with the Geocentric model of the Solar System?
• Which characteristic is commonly cited as making Europa, Enceladus, and Ganymede particularly interesting for astrobiology?
• If we send a radio signal to an exoplanet 300 light years away, what is the earliest possible time we might receive a reply?
• As originally stated, if Kepler's laws held exactly, why would the radial velocity method not be possible?
• A light-year is best described as which type of unit?
• Jupiter's chemical composition is closest to that of which body?
• A planet orbits a star similar to the Sun at 1 AU and has about half the mass of Earth. Which statement is most likely about this planet?
• What was the frost line of the solar system?
• Imagine an exoplanet discovered orbiting a star with the same mass as the sun. The planet has the same mass as Earth, but is 20% larger in size. Its orbital period is 355 days. What can we conclude about this planet?
• When someone in Thunder Bay (longitude 89 degrees W) sees a full moon, what phase will someone in Paris (longitude 2 degrees W) see at the same time?
• Which energy source remains the most important for heating the interiors of terrestrial planets today?
• Roughly how often is Earth hit by impactors capable of Hiroshima-scale explosions?
• Imagine we added a new rocky moon to Saturn. If the moon was medium-sized, orbited outside Saturn's ring system, had a low orbital inclination, and had a low orbital eccentricity, which of the following might result?
• Why does the plasma tail of a comet always point away from the Sun?
• The energy of a photon is related to its frequency by which constant?
• Which statement about the nebular hypothesis is true?
• If Mercury were moved to a position farther from the Sun than Mars, would its orbital speed be faster or slower than Mars, and why?
• Which process converts mass into energy in stars?
• Which statement about Earth and Mars is true?
• Compared to the distance between the Sun and the Earth, the distance between the Earth and the nearest star is approximately how many times larger?
• Compared to jovian planets, we should expect terrestrial planets to have:
• Which of the following planets orbit the Sun in retrograde motion (opposite to the usual direction)?
• The terrestrial planet cores contain mostly metal because
• Earth's moon was probably formed by which scenario?
• In the present-day solar system, a terrestrial planet's main source of internal heat is:
• Which information can be obtained from transit observations but cannot be obtained from radial velocity measurements?
• Why doesn't Mars have significant auroras?
• The Moon's orbital nodes precess with an 18-year cycle. What is a consequence of this precession?
• Compared to the force of gravity the Earth exerts on you, the force of gravity you exert the Earth is:
• The three principal sources of internal heat of terrestrial planets are
• During the collapse of a rotating cloud, what happens to the rotation rate as the cloud contracts if no external torques act on it?
• In the radial velocity method, what two planet properties are primarily constrained?
• When Felix Baumgartner stepped off the platform hanging from his high-altitude balloon, he fell to Earth. However, when an astronaut steps out of the International Space Station, she doesn't fall. Why?
• Which of the following is NOT a piece of evidence in support of the nebular hypothesis for the formation of the solar system?
• If a transit light curve shows two dips per orbit, what is the usual interpretation?
• Compared to X-rays, radio waves have:
• In 2015, a major discovery about the presence of water on Mars was made. Why was this discovery significant?
• How thick are Saturn's rings from top to bottom?
• Which explanation best accounts for why jovian moons have been more geologically active than the Moon or Mercury?