https://quizplus.com/study-set/3825
Planetary Science
Midterm Exam
Course Introduction
Planetary Science explores the origins, composition, dynamics, and evolution of planets and other bodies within our solar system and beyond. This course integrates fundamental concepts from astronomy, geology, atmospheric science, and physics to examine the processes shaping planetary systems. Topics include planetary formation, surface and interior processes, atmospheres, magnetic fields, rings, moons, and the methods used to study these bodies, such as telescopic observations and spacecraft missions. Students will develop an understanding of comparative planetology and current discoveries in exoplanet research, gaining insight into the conditions required for habitability and the quest for life beyond Earth.
Recommended Textbook
Life in the Universe 3rd Edition by Jeffrey O. Bennett
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12 Chapters
1027 Verified Questions
1027 Flashcards
Source URL: https://quizplus.com/study-set/3825 Page 2
Chapter 2: The Science of Life in the Universe
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60 Verified Questions
60 Flashcards
Source URL: https://quizplus.com/quiz/76322
Sample Questions
Q1) In the scientific method, what immediately follows a prediction?
A) a hypothesis
B) an observation
C) a question
D) a test
Answer: D
Q2) Scientists always try to
A) be as subjective as possible
B) be as objective as possible
C) disagree with the current paradigm of the time
D) agree with the current paradigm of the time
Answer: B
Q3) The planet Neptune was discovered
A) from the predictions generated by calculations using Newton's Universal Law of Gravitation
B) by accident
C) by the ancient Greeks
D) by a robotic space probe
Answer: A
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Page 3
Chapter 3: The Universal Context of Life
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110 Verified Questions
110 Flashcards
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Sample Questions
Q1) In the context of life in the universe, which of the following discoveries of astronomy suggests that the processes that formed life on Earth could have occurred elsewhere?
A) the universe is very old
B) the laws of physics are the same everywhere
C) the universe is very large
D) the chemical elements that make up life on Earth are common
Answer: B
Q2) An isotope of the element Manganese (Mn) has an atomic number of 25 and a mass number of 55. Assuming the atom is neutral, this means it has
A) 55 protons, 55 electrons, and 25 neutrons
B) 25 protons, 25 electrons, and 30 neutrons
C) 25 protons, 30 electrons, and 25 neutrons
D) 25 protons, 25 electrons, and 55 neutrons
Answer: B
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Chapter 4: The Habitability of Earth
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135 Verified Questions
135 Flashcards
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Sample Questions
Q1) A rock sample contains 1/2 microgram of the parent radioactive isotope Uranium-235 and 1/2 microgram of its daughter isotope Lead-207. If the half-life of this decay is 700 million years, how old is this rock?
A) 1400 million years
B) 2100 million years
C) 700 million years
D) 350 million years
Q2) Chemical analysis of a rock can tell us
A) when the rock formed
B) the detailed geological history of the rock
C) what the rock is made of
D) the temperature and pressure conditions under which it formed
Q3) A radioactive isotope is
A) an unstable nucleus that gives off radio waves
B) a nucleus that formed from the fusion of two other nuclei
C) a stable nucleus that is formed from the fission of a large unstable nucleus
D) an unstable nucleus that spontaneously decays to produce high-energy particles and radiation
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Chapter 5: The Nature of Life on Earth
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110 Verified Questions
110 Flashcards
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Sample Questions
Q1) The organisms in which domains of life are unicellular or multicellular?
A) bacteria only
B) bacteria and archaea
C) archaea and eukarya
D) eukarya only
Q2) Organisms that are found living close to volcanic vents on the ocean floor are referred to as
A) calorophiles
B) hypothermaphiles
C) thermophiles
D) psychrophiles
Q3) The process by which a single cell from a living organism is used to grow an entirely new organism with an identical set of genes is referred to as
A) replication
B) twinning
C) cloning
D) genetic copying
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Chapter 6: The Origin and Evolution of Life on Earth
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110 Verified Questions
110 Flashcards
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Sample Questions
Q1) What is the most compelling piece of evidence that suggests that the dinosaurs were made extinct by the impact of an asteroid 65 million years ago?
A) a layer of sediment laid down at that time which is littered with dinosaur fossils
B) dinosaur fossils are found in rock layers older than 65 million years but not younger than 65 million years
C) a layer of sediment laid down at that time which is rich in the element Iridium (Ir), an element common in asteroids but less common on the Earth
D) the crater from this impact can still be seen in the deserts of Arizona
Q2) The first living organisms to develop photosynthesis were probably
A) purple and green sulfur bacteria
B) trilobites
C) cyanobacteria
D) stromatolites
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Chapter 7: Searching for Life in Our Solar System
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56 Verified Questions
56 Flashcards
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Sample Questions
Q1) The surface of Venus is much hotter than the Earth because it
A) has no magnetic field
B) has a very thick atmosphere of carbon dioxide
C) has a much higher rate of volcanic activity
D) is closer to the Sun
Q2) Which one of the following properties is unique to water?
A) it has a high heat capacity
B) it is a good solvent
C) it is a liquid over a wide temperature range
D) it expands on freezing
Q3) The planet Saturn is approximately 10 times farther away from the Sun than the Earth is. Given this, how much sunlight does it receive compared to the Earth?
A) 1/1,000th
B) 1/10,000th
C) 1/100th
D) 1/10th
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Chapter 8: Mars
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90 Verified Questions
90 Flashcards
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Sample Questions
Q1) Evidence for very recent water erosion on Mars comes from the observations of A) gullies in the rims of craters
B) channels carved on the slopes of volcanoes
C) dried up river beds on the highlands
D) mud flows surrounding craters
Q2) The seasonal variations experienced on the Earth are due
A) only to its changing distance from the Sun
B) mostly to its axis tilt
C) to small changes in the amount of energy emitted by the Sun
D) to both its axis tilt and its changing distance from the Sun
Q3) The Tharsis region of Mars was most likely formed
A) from sediment that piled up due to past water erosion
B) by plate tectonics
C) by a plume of molten mantle material rising to the surface forming a giant bulge in the Martian crust
D) from compressions in the Martian crust as the planet cooled and contracted
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Chapter 9: Life on Jovian Moons
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54 Verified Questions
54 Flashcards
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Sample Questions
Q1) Europa's subsurface ocean, if it indeed exists,
A) could be more than ten times deeper than the deepest ocean trenches on Earth
B) should be of similar depth to the deepest ocean trenches on Earth
C) should be of similar depth to the shallowest oceans on Earth
D) could be more than a hundred times deeper than the deepest ocean trenches on Earth
Q2) Methane should be rapidly destroyed in Titan's atmosphere, yet it is still present in appreciable amounts. How can this be?
A) on the surface of Titan live cows that are constantly producing methane gas
B) larger hydrocarbons like ethane and propane are being broken down by ultraviolet light into methane
C) methane may be continually evaporating from the surface and the interior
D) comet impacts are constantly supplying the atmosphere with fresh methane
Q3) Compared to the moons of Jupiter, the moons of Saturn, Uranus, and Neptune
A) contain a higher proportion of rock
B) are made of pure ice
C) contain a higher proportion of ice
D) are made of pure rock
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Chapter 10: The Nature and Evolution of Habitability
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60 Verified Questions
60 Flashcards
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Sample Questions
Q1) According to conservative estimates, the end of habitability of Earth will come about
A) 3 to 4 billion years from now
B) a few hundred thousand years from now
C) 100 million years from now
D) a billion years from now
Q2) Based solely on its distance from the Sun, we would expect the surface of Venus to be
A) much hotter than the Earth such that liquid water would only exist as a vapor in the atmosphere
B) much colder than the Earth such that liquid water would freeze
C) hotter than the Earth but not so hot that liquid water could not exist
D) at the same temperature as the Earth with oceans of liquid water
Q3) Unlike the Earth, Venus does not have a protective magnetic field because
A) of its proximity to the Sun
B) of its slow rotation
C) it lacks a partially molten iron core
D) there is less magnetized iron on its surface
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Chapter 11: Habitability Outside the Solar System
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) Which of the following could be a stable planetary orbit in a binary system?
A) a large orbit around both stars in a wide binary system
B) an orbit close to one of the stars in a wide binary system
C) a "figure-of-eight" orbit about both stars in a close binary system
D) an orbit close to one of the stars in a close binary system
Q2) Imagine we have a planet identical to Jupiter around another star, with the exception that its orbit is much closer. How would its density compare to Jupiter?
A) it would be slightly higher
B) it would be much higher
C) it would be lower
D) it would be the same
Q3) NASA's Kepler mission, launched in 2009, is currently searching for exoplanets using which technique?
A) transit
B) Doppler
C) astrometry
D) gravitational lensing
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Chapter 12: The Search for Extraterrestrial Intelligence
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76 Verified Questions
76 Flashcards
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Sample Questions
Q1) What kind of civilization can life on Earth currently be classified as?
A) Type II
B) Type III
C) Type IV
D) Type I
Q2) Suppose there are a million habitable planets in our galaxy, that one in ten are habitable, that one in a thousand planets with life had at some point had an intelligent civilization, and that one in a hundred civilizations that has ever existed is in existence now. Given this, how many civilizations are in existence now?
A) 10
B) 1
C) 1000
D) 100
Q3) A dinosaur like a Brontosaurus with a small head and a large body would be expected to have an Encephalization Quotient (EQ) of
A) exactly 1
B) less than 1 but greater than zero
C) zero
D) greater than 1
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Page 13
Chapter 13: Interstellar Travel and the Fermi Paradox
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66 Verified Questions
66 Flashcards
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Sample Questions
Q1) The ultimate speed of a solar-sail-propelled spacecraft is limited by the A) low energy photons that the Sun produces
B) gravitational force of the Sun
C) fact that the intensity of sunlight falls off rapidly with distance D) mass of the spacecraft
Q2) The theory of relativity predicts that everything in the universe
A) is relative except the laws of physics, which are absolutes
B) is relative except the speed of light, which is an absolute C) is relative, there are no absolutes
D) is relative except the laws of physics and the speed of light, which are absolutes
Q3) What kind of message from Earth was carried by the Voyager probes?
A) a gold-coated copper record
B) a plaque
C) a DVD
D) a VHS tape
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