TopHat quizzes for astro How would you represent in scientific notation? A 2.7 x 10 2 B 2.7 x 10 3 C 2.7 x 10 4 D 2.

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1 TopHat quizzes for astro 111 Lecture week 1 1. If you multiply 2 x 10 4 by itself, what do you get? A. 4 x 10 4 B. 4 x 10 8 C. 2 x 10 4 D. 4 x Jupiter's maximum distance from the sun is approximately 8.2 x 10 8 kilometers. How would this number be represented in standard numerical notation? A 8,200,000,000 kilometers B 820,000,000 kilometers C 82,000,000 kilometers D 820,000,000,000 kilometers 3. How would you represent in scientific notation? A 2.7 x 10 2 B 2.7 x 10 3 C 2.7 x 10 4 D 2.7 x What is the largest distance? A. Kilometer B. Parsec C. Light Year D. Astronomical Unit Lecture week 2 1 The fact that we always see the same face of the Moon tells us that A. the Moon s rotation period is the same as its orbital period B. the Moon looks the same on both sides C. the Moon does not rotate D. we don't always see the same face of the Moon 2 The angular distance of an object in the sky above or below the Celestial Equator is called its A. azimuth B. altitude C. declination D. right ascension

2 3 In our (Northern Hemisphere) summer the sun rises: A. north of east B. due East C. south of east D. due West 4 In the winter (Northern Hemisphere), it s colder than in summer because A. the Earth is farthest from the Sun B. the Sun s rays impact the Earth s surface less directly than in summer C. there are more clouds in the winter D. Solar storms are more frequent Lecture week 3 1 A Planck curve is a plot of the following properties: A. temperature and velocity B. temperature and wavelength C. spectral type and energy D. intensity and frequency 5 If the Earth's axis were not tilted with respect to its orbital plane, then A a mean solar day would be longer B a sidereal day would be longer C the tides would be much stronger D there would be virtually no seasons 2 If two objects have the same size but different temperatures, then the hotter object will be A bluer and brighter B bluer and fainter C redder and brighter D redder and fainter 3 Two objects are moving farther apart. Each will see the other's light A red- shifted B better than if moving closer C richer in heavier elements D blue- shifted Lecture week 5 1 Which have more moons, on average? A Terrestrial planets. B Jovian planets. C Both jovian and terrestrial planets have about the same number of moons.

3 D Dwarf planets. 2 The period of a planet revolving around the Sun can be found if we know its A mass. B density. C mean distance from the Sun. D period of rotation. E more than one of the above is necessary to determine the period. 3 The terrestrial planets include the following: A Mercury, Venus, Earth, Mars and Pluto B Jupiter, Saturn, Uranus, Neptune C Earth only D Mercury, Venus, Earth and Mars 4 The Roche limit is an important concept A that defines the maximum brightness a moon can be. B that defines the maximum mass a moon can possess. C that defines the maximum density of a planets' ring system. D that defines the critical distance from a planet inside of which a moon can be tidally destroyed. Lecture week 6 1 Rocks formed from layers of fine material that have been compressed under water are called A igneous rocks B sedimentary rocks C metamorphic rocks D fault rocks 2 Which of the following is a strong greenhouse gas? A Helium B water vapor C Oxygen D Nitrogen 3 In what part of the atmosphere does weather occur? A hydrosphere B stratosphere C ionosphere D troposphere

4 Lecture week 7 1 Which of the forces listed causes the Moon to keep a single hemisphere towards the Earth? A Centrifugal force B Centripetal force C Magnetic force D Tidal force 2 The crater density on the lunar highlands helps scientists to realize that A the lunar highlands are younger than the lunar maria. B the lunar highlands are older than the lunar maria. C the lunar highlands are about 1 billion years old. D the lunar highlands are about 1.6 billion years old. Lecture week - Mercury 1 Mercury experiences extreme highs and lows in temperature, between day and night A Mercury is so close to the sun B because it lacks a "blanket" of atmosphere C because Mercury's atmosphere has a runaway greenhouse effect D because of Mercury's orbital inclination Lecture week - Venus 1 Venus is hot because A of its closeness to the sun. B of its dense atmosphere. C its atmosphere is almost completely CO 2. D all of the above factors are true. 2 Venus lacks a perceptible dipole magnetic field A due to the closeness to the sun. B due to the very thick atmosphere. C due to high surface temperatures. D mainly due to slow rotation Lecture week Jupiter 1 Jupiter is believed to have a massive core A where fusion takes place. B consisting of gaseous hydrogen and helium. C consisting of metallic hydrogen.

5 D consisting of rocky material. Lecture week Saturn 1 Something unusual about Saturn's moon Hyperion A is that it has no craters. B is that it has no ice. C is that it constantly changes its rotation rate. D is that it orbits Titan, another moon. 2 Most of Saturn's moons and Jupiter's moons A are orbiting erratically. B are larger than the terrestrial planets. C are near the critical Roche distance. D are tidally locked by gravity into synchronous rotation.

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