Current Location Take Test: Midterm Exam Astronomy SUMC 2012 Content Assistive Technology Tips [opens in new window] Instructions Description Instructions Multiple Attempts Not allowed. This Test can...

Current Location Take Test: Midterm Exam Astronomy SUMC 2012 Content Assistive Technology Tips [opens in new window] Instructions Description Instructions Multiple Attempts Not allowed. This Test can only be taken once. Force Completion This Test can be saved and resumed later. Question Completion Status: Question XXXXXXXXXXKepler's third law relates the square of the planet's orbital period in years to the cube of its average distance from the Sun in astronomical units. Answer True False 2 points Question XXXXXXXXXXThere is a solar eclipse of some kind every new moon. Answer True False 2 points Question XXXXXXXXXXIf you are in the Moon's umbral shadow, then you are witnessing Answer a total solar eclipse. some kind of lunar eclipse. nighttime. a total lunar eclipse. a partial solar eclipse. 2 points Question XXXXXXXXXXThe star Thuban in Draco Answer lies halfway between the bowls of the Big and Little Dippers. is brighter than Polaris. was an excellent pole star in 3,000 BC. is used to locate the vernal equinox. lies as the center of the precession cycle. 2 points Question XXXXXXXXXXThe two forms of electromagnetic (E-M) radiation that experience the least atmospheric opacity are Answer light and radio waves. ultraviolet and infrared waves. light and infrared waves. microwaves and television waves. X and gamma radiation. 2 points Question XXXXXXXXXXWhich of these is not a form of electromagnetic radiation? Answer television signals X-rays in the doctor's office ultraviolet causing a suntan light from your camp fire DC current from your car battery 2 points Question XXXXXXXXXXKepler found the orbits of planets are ellipses, not circles. Answer True False 2 points Question XXXXXXXXXXCompared to when it was on the surface, a satellite in an orbit about 4 times the Earth's radius will experience about 1/16 the force due to gravity. Answer True False 2 points Question XXXXXXXXXXThe speed of light in a vacuum is Answer h = E/c XXXXXXXXXXkm/hour XXXXXXXXXX,000 miles per hour XXXXXXXXXX,000 km/sec. not given. 2 points Question XXXXXXXXXXIf Taurus is now rising at sunset, which constellation will rise at sunset next month? Answer Gemini Aquarius Aries Pisces Scorpius 2 points Question XXXXXXXXXXIn an annular eclipse, Answer the Moon appears as a thin, bright ring. the Sun is partially blocked by the Earth. the Sun appears as a thin, bright ring. the Sun is totally blocked by the Moon. the Moon is totally blocked by the Earth. 2 points Question XXXXXXXXXXAt the equinoxes, the declination of the Sun must be zero degrees. Answer True False 2 points Question XXXXXXXXXXIn the sky, declination is measured in degrees north or south of the celestial equator. Answer True False 2 points Question XXXXXXXXXXIncreasing the baseline will increase the parallax angle. Answer True False 2 points Question XXXXXXXXXXIf a wave's frequency doubles, its wavelength Answer is unchanged, as c is constant. becomes 16× longer. is halved. is also doubled. is now 4× longer. 2 points Question XXXXXXXXXXA star with a right ascension of 2.6 hrs will rise 2.6 hours after the vernal equinox. Answer True False 2 points Question XXXXXXXXXXAs it orbits the Earth, the Moon appears to move its own diameter (0.5 degrees) eastward every hour. Answer True False 2 points Question XXXXXXXXXXFrom full moon to third quarter moon takes about a week. Answer True False 2 points Question XXXXXXXXXXIf the Moon appears half lit, and is almost overhead about 6:00 AM, its phase is Answer waning crescent. full. third quarter. first quarter. waxing crescent. 2 points Question XXXXXXXXXXThe interval from new Moon to first quarter is about a(n) Answer day. hour. week. year. month. 2 points Question XXXXXXXXXXAn hour of right ascension corresponds to 60 degrees in the sky. Answer True False 2 points Question XXXXXXXXXXIn Bohr's model of the atom, electrons Answer are spread uniformly through a large, positive mass. are not confined to specific orbits. can be halfway between orbits. move from orbit to orbit in many small steps. only make transitions between orbitals of specific energies. 2 points Question XXXXXXXXXXAccording to Newton's first law, an object traveling in a circle does not have a force acting on it. Answer True False 2 points Question XXXXXXXXXXWhat will occur when the full moon is on the ecliptic? Answer a total solar eclipse a total lunar eclipse a partial lunar eclipse if the Moon is at perigee a partial solar eclipse an annular lunar eclipse 2 points Question XXXXXXXXXXA planet (or comet) will speed up as it approaches the Sun. Answer True False 2 points Question XXXXXXXXXXThe larger the parallax shift, the closer an object is to us. Answer True False 2 points Question XXXXXXXXXXIf new moon fell on March 2nd, what is the Moon's phase on March 14th? Answer waxing gibbous full waning crescent first quarter waxing crescent 2 points Question XXXXXXXXXXThe radiation our eyes are most sensitive to lies in the color Answer blue at 4,321 nm. red at 6563 Angstroms. yellow-green at about 550 nm. black at 227 nm. violet at 7,000 Angstroms. 2 points Question XXXXXXXXXXAccording to Kepler's third law, if you know the planet's orbital period, you can find its average distance from the Sun. Answer True False 2 points Question XXXXXXXXXXEighteen days past new moon, the Moon's phase is waning gibbous. Answer True False 2 points Question XXXXXXXXXXRight ascension in the sky is very similar to latitude on the Earth. Answer True False 2 points Question XXXXXXXXXXA wave's velocity is the product of the Answer frequency times the period of the wave. amplitude times the wavelength of the wave. amplitude times the frequency of the wave. frequency times the wavelength of the wave. period times the energy of the wave. 2 points Question XXXXXXXXXXThe celestial sphere is divided into 88 modern constellations. Answer True False 2 points Question XXXXXXXXXXThe vernal equinox marks the beginning of spring in the northern hemisphere. Answer True False 2 points Question XXXXXXXXXXAccording to Newton's second law, if you double the force acting on a body, the acceleration will double. Answer True False 2 points Question XXXXXXXXXXWhich of these is the same for all forms of electromagnetic (E-M) radiation in a vacuum? Answer velocity photon energy wavelength frequency amplitude 2 points Question XXXXXXXXXXThe observed spectral lines of a star are all shifted towards the red end of the spectrum. Which statement is true? Answer The star is not rotating. The star has a radial velocity towards us. This is an example of the photoelectric effect. This is an example of the Doppler effect. The second law of Kirchhoff explains this. 2 points Question XXXXXXXXXXA jar filled with gas is placed directly in front of a second jar filled with gas. Using a spectroscope to look at one jar through the other you observe dark spectral lines. The jar closest to you contains Answer gas at very high pressure. the hotter gas. gas at the same temperature as the other jar. the exact same gas as the other jar. the cooler gas. 2 points Question XXXXXXXXXXIf a star was the same size as our Sun, but was 81× more luminous, it must be Answer four times hotter than the Sun XXXXXXXXXXtimes hotter than the Sun. three times hotter than the Sun. nine times hotter than the Sun. twice as hot as our Sun. 2 points Question XXXXXXXXXXWhat is the name of the temperature scale that places zero at the point where all atomic and molecular motion ceases? Answer Fahrenheit Ransom Centigrade Celsius Kelvin 2 points Question XXXXXXXXXXThe total energy radiated by a blackbody depends on Answer the square of its temperature. the square root of its temperature. the cube of its temperature. the fourth power of its temperature. the cube root of its temperature. 2 points Question XXXXXXXXXXConsider this diagram. Which statement is true? Answer The amplitude is 6 and the wavelength is 4. The amplitude is 4 and the wavelength is XXXXXXXXXXThe amplitude is 8 and the wavelength is 6. The amplitude is 4 and the wavelength is 6. The amplitude is 8 and the wavelength is XXXXXXXXXXpoints Question XXXXXXXXXXA star with a right ascension of 1.0 hours will rise Answer XXXXXXXXXXhours after the vernal equinox XXXXXXXXXXhours before the vernal equinox XXXXXXXXXXhours after the vernal equinox. at the same time as the vernal equinox XXXXXXXXXXhours before the vernal equinox. 2 points Question XXXXXXXXXXWhile watching a star, you see it moves 15 degrees across the sky. How long have you been watching it? Answer 1 minute 1 hour 15 seconds 15 minutes 3 hours 2 points Question XXXXXXXXXXThe greatest distance above or below the ecliptic the Moon can move is Answer 30 degrees XXXXXXXXXXdegrees XXXXXXXXXXdegrees XXXXXXXXXXdegrees XXXXXXXXXXdegrees. 2 points Question XXXXXXXXXXThe element first found in the Sun's spectrum, then on Earth 30 years later, is Answer solarium. technicum. helium aluminum. hydrogen. 2 points Question XXXXXXXXXXThe sidereal day is determined by the Earth's rotation with respect to the stars. Answer True False 2 points Question XXXXXXXXXXA planet whose distance from the Sun is 3 AU would have an orbital period of how many? Earth-years? Answer XXXXXXXXXX XXXXXXXXXXpoints Question XXXXXXXXXXConstellations are close clusters of stars, all at about the same distance from the Sun. Answer True False 2 points Question XXXXXXXXXXLatitude and right ascension are coordinate systems used to find objects on the celestial sphere. Answer True False 2 points Save and Submit Click Save and Submit to save and submit. Click Save All Answers to save all answers. 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