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Unformatted text preview: ‘E. hhodee éflfae ASTRDNHHY Jflfl I'i Me rch 195"}! FIRST HIDeTEHH EKHJ'I Exam Number -' I“: .- ' Home " :_ Please Print ?ieafie darken in only-one epece on the nnener sheet for each quastiflu. There in e correct choice fer each qucetion. 1. our cyctem of measuring angles is based upon the number ED. which of the following cultures was reenoneible for its introduction? 1} Greek 2} Chinese 3} Babylonian a} Egyptian 5} Haynn 2. Cone paintings have been discovered which appear to depict astronomical ohjccte end which are as old as twenty to thirty thoneend years. The earliest of thene paintings were the contribution of which interval in history? 1} The Bronze Age 2} The Stone Age 3} The flerh Anee i} The Renaissance 5} The Christian Ere 3. in which of the following civilizations were the astronomers also the priests? . l} The Egyptian 2} The Babylonian J} The Heyen 4} All of the above 5} None of the Above fl. Hhich of the following coltnree recorded yieihle Sunflpfitfi. flflmfltfip NEEEDrflt and coy-as {or "guest stare")? i] The Ehineee 2} The Babylonian 3} The Egyptian h} 1he Greek 5} None of the above 5. thch of the Following was not on American lndinn contribution to nntronowyf l} UJrculnr dirt nounde 2} Petroglyphe 3} Calendar sticks in] ‘l'i'I-e oundial 5} fill of the ebeve were Indion contributions e. The eorth‘o axis of rotation. 1r extended into space. would appear to Intersect the celestial sphere where? l] The Eclectiol Equator 2} The Eeieetio]. Police 3) The vernal Equinox 4} The Galactic center 5} flnne of the chute T. 13. 1]. In Los engeles the eeaith is the peiot direetly overhead each lneatien. Where is the zenith located at the South Pele of the earth? 1} The Vernal Equinox El Directly overhead 3} The South fleIeetiel Pele fl] Bath 1} and 3] above 5) Beth E} and 3) above The Greeks noticed that same of the celestial objects appeared to mewe irregularly, or "wander" among the stars. Including the moon and the sunI how many of these wandering objects did the Greeks identity by eye? 1} Four 2) Five 3} Nine e} Eleven 5} Seven The sun appenre to rise ebuut four minutes later with respect to the stars caflhfiil’aThi-a is due In: which nf the fullnwlng reeeenfi? i J} The revolving around the Hun and retating aheut its Hun axis simultaneously. 2} The sun appears to move westward among the stars from night to night. ' 3} The sun is rotating about the sun and revolving about its axis. fl} Actually the sun appears to rise at the same time in the respect to the stars each day. 5} Actually the sun appears to rise about fnur minutes Earlier'with respect tn the stars each day. Th the ancients the planets that they ceuld see occasionally demonstrated a peculiar kind of motion among the stars. This kind of motion was called what? 1} Direct motion 2} Retrograde motien 3] Progredc motion . d} Orbital motien 5] Preeeseion Why dn we net experience a eels: eclipse every munch? 1'; l} Because the moon's erhit is always located within the earth’s lfiit orhi tel. 111 ene . 2} Because the moon's erhit is elliptieal and net circular. ;{1;wr" 3} Because the moon's orbit is tipped with respect to the earth's 'E-HA orbital plane. fl} Because the menu sometimes rEVerees dirEctisn in_its orbit before an Eclipse can nctur. 5} Nune ot the shows 13. Id. 15. 1h. IT. Page 3 The orbits of the nine planets in the solar system are all nearly aligned along one flat surface. What is this surface called? 1) 2} 3} e] 5} The Ellipitie Plane The Ecliptic Plane A Parahele The Celestial Equator The Planetary Plane The region of the heavens through which the sun and planets appear to travel is named for many of the constellations through which these objects travel. What is this region also called? 1} 2} 3} 43' 5} The Horizon The Hadir The Zodiac The Celestial Equator Hone of the above How is the earth's axis of rotation oriented with respect to the plane of the earth's orbit about the sun? 1} 2?: a} an 5} the axis is tipped at an angle with respect to the orbital plane the earth‘s axis is parallel to its orbital plane the earth's axis is perpendicular to its orbital plane the earth's axis points toward the sun at all times none of the above Noting the course of each year the length of daylight at a given location continuously changes. For an observer located in the northern hemisphere, ohich of the following lists of events is correctly organised in order of increasing length of day [i.e. from the shortest to the longest day}. 1} 2} 33 e} 5} vernal equinox, summer solstice, winter solstice summer solstice, autumnal equinox, winter solstice winter solstice, vernal equinox, summer solstice winter solstice, summer solstice, vernal equinox vernal equinos, autumnal equinox, winter solstice Why was the solar eclipse of February Eh, 19?? total in Portland, flregon, h 414 but only partial in Los sngeles? 1] Because Portland is located at a different longitude than L-e- £;Wr 2] Because the total eclipse was blacked out in L.fi. by the mooe*s £4 shadow 1" . m 3} heuuuuo Portland was directly in the central portion of the moon's {fies shadow and Lea engeles was slightly to one side of it s) Because L,a. was on the path of totality and Fortland wasn't 5) Hone of the shove The seasons are caused by: I} 2] 3} In} 5} variations in the sun‘s luminosity the rotation of the earth the obliquity of the ecliptic the changing distance of the earth from the sen precession IE. 19. 2D. 2]. 22. Page h The mean rotates: 1) net at all 2) in eueh a may as re keep its dark side turned away frem the earth 3) eeee during its revelutien around the earth a} enee a year 5} ahaut an axle painted almest exactly tavetd the earth Hhieh ef the felleuing eatrenemere first eerreetly deserihed the pheeee at the mean? 1} Aristetle 2} Pyt hagurae 3] Ptelemy 4] Brahe 5] Galileo Hipparthua diseauered Ereteseien in the 3nd Century E.G. Preeessien refers to: 1} the pregreasien af seasens 2} the exaet length at the year 3} a slew conical metien (if the axis (if the earth a} the gradual slewing ef the earth's ratatien 5} the parade ef the planets in the night sky Arietet1e realized that the metien of the sun emeng the state could be caused by a nation of the earth shout the sun. Heueuet, he argued against that paint at View and maintained that the earth did eat neve— why did Arietetle argue this way? 1] Because hriatetle had he any af hnaeing haw Far away the stars were and hence he did net knew haw small the apparent metians at the etere eeuld be due ta the earth's metien 2] heeeuse he did eat have a teleseepe with which ta measure stellar parallax 3] Heeause the eanetellatiune did not appear te change ahape during the course DE a year a} Hana at the ahave 5} A11 “I" the ”hunt“. Iflntflluf the falluuing lava relates the peried nf an erhiting satellite te the site ef iLe erhit? I) Hewtae's 3rd Law 1} KEPIEI'H 3rd Law aa derived by Neutan 3} Kepler‘s 2nd Tau 15+} Newtnnfs Tau DI Gravitation 5} Heutan's 2nd Leu Page 3 23. Galilee determined that the sun retatee en its axis by: I} phutcgraphing its spectrum and nating the Dcppler shift cf its spectral lines 2} calculating the rutatinn rate ftum the diatance and revulutiun period cf the earth 3} calculating the rctatian rate item the distance and rErnlntien pericd cf Mercury a} cheersing the flaw patterns cf its surface gases 5} matching euuepcts appear tc mace acrcaa its disc 2%. In which at the [allowing types cf teleeccpcs deee the observer work Just heluw the primary mirrnr? - l} cnnde E) caesegrain 5k.” 3} newtenian h¥? a) prime faces 3} bath 1} and 3} ahcve 25. In a mndetfi telescope, a large primary mirrer er lens is desirable fcr which of the following reaanne? 1) it is cheaper tn make than s small chjectire ff tilfiji 2] the light—gathering pcwer increases with the size at the primary 3) the effects sf diffraction became less bstherecme a) bath 2} and 3) ahave 5) all of the ahcre 25. The epreading cf white light intn its cclnrs by s prism is called: 1} diffracticn 2} diffueien 3} diepersinn a} reflectian 5} shsnrpticn 2?. Ten are trying tc cunduct e prngrsm of measuring the spectra at as many stars as ycu can. Ycu realize that ynu ceule increase the number cf stars measured by using a device to shcrten the length cf time needed te make cash exposure. Hhst type of device dc ycn need? I] phctcgraphic plates 2) a phctemeter 3} an image intensifier 4] a smaller teleeccpe 5) name cf the ahcue 28. Page 6 You are working in an cheeruatorp and you observe the spectrum of a distant star. Tau find that a particular spectral line that is normally located at fiflflflh in the laboratory is located at 59TIa in the star's spectrum. What can you tell about the star from this information? 1} The etar_ia receding from the earth 2} The star is not moving along the line of sight 3] The star is approaching the solar system a] Nothing. Your equipment must hare been broken. 5} None of the above For questions 19 through 32, match the following laws with the statementia} that best describe them. 29'. 31. 33. 33. 3h. 1) 2) . 3} a} 5) Wien*a Law Klrchhoff's Laws of Spectral Analysis Planck's Law Stefan-Beltsmann Lay Bode‘s Law Says that the wavelength of the peak emission of a black-body is determined by the temperature of that body. Is the law which describes the shape of the black—body curves. says that a hlackrhody which is three times hotter than anether of equal size will radiate 31 times more energy than will the cooler one. Is the reascn for the appearance of the solar spectrum. Using either ground—based telescopes or orbiting tfllflfiflflflflfi a team Of astronomers has observed the fulluwiug stars. Which Of these stars is intrinsically the hottest? 1) I) 3} a) 5} a star that appears blue a star that appears brightest in the ultraviolet a red star an infrared star a yellow star For a long time physicists could not explain the shape of the spectrum given eff by a perfect radiator. This failure was called the ”ultraviolet catastropher" who was the physicist who finally was able to explain this discrepancy? l] Maxwell 2] Einstein 3) Bohr &} Planck 5} Newton '35. Fur 36. 3?. JH. 39. en. Page T The model of the stem in which the electrens travel in circular erhits is named fer which of the fellewing man? 1} 2) 3] In} 5} flalmer Rutherford Behr Heisenberg Planck questiens 36 threegh 33 cheese the best answer frem the Eellewing list: 1} I) 3} it} 5} ionisation recemhinetien eheerptien emieeien eseitetien The precess in which ene or mere elettrene ere remeved Erem en etem The process in which a phntcn is given eff when an electren dreps [rem an upper energy level te a lewer energy levEI The pruceas in which en electrec is meved free a law level to a higher level by the interactien of a pheteu with the stem. The energy at the phctcn disappears in the precesa Heceuee same at the radiatieu which falls upcn en ehjaet can be reflected from or transmitted thrcugh the chject1 physicists invented the ideal er perfect rcdiatar. Such an ideal chject nhserhs all ef the energy which falls upen it. This ehjeet is alee hnevn he: 1} El 3} i” 5} a hitch Hale a pcrfcct gee n 'lilech. Belly an ethnic oscilletcr s sclid substance which of the fellcwing theories says that all light energy travels eh phetens ef energy equal te hv ? 1?! 2} 3} a.) 5} the theery cf special relativity the theery of general relativity the quantum theery the kinetic theery nune cf the eheve ”a1. a2. 43. as. #5. i6. - Page 3 Which of the following statements is (or are} true? 1] a stationary electric charge causes a magnetic field+ 2] a moving magnetic field induces an electric current 3} a moving electron causes a magnetic field 4] a moving magnetic field has no effect on a wire in it 5} both 2} and 3} shove The different isotopes of an element have the some number of in their nuclei but have different newborn of located there. 1} neutrons .+. protons 2} neutrons ... electrons 3} electrons ... protons a} protons ... neutrons 5} protons ... neutrons Antipartielea are particles which have the some as their corresponding normal particles, but which have opposite 1} mass ... charge 2} charge ... mass 3} energy ... mass A} rcmncrature ... charge 5} none of the shove Which of the following is ngt_one of the tests of general relativity mentioned in class? 1} the Doppler shift of light.fron moving objects 1} the deflection of starlight by the sun 3} the advance in the perihelion of Earner? a} the gravitational redshift of photons leaving o star 5} the time delay of the radio signals from the fiihing spacecraft which of the following particles have no rest mass? 1) photons 2} electrons 3} protons d} neutrinos 5} both 1] and i} above According to the theory of special relativity, Which of the following sequences describes how an observer perceives timeI length| and mess appear to change for another observer who is in uniform motion with respect to him? 1} time and length hoth increase and mass decreases 2} time and mass both decrease and length increases 3} time and mass hoth increase and length decreases s} time and length hoth decrease and mass increases 5} none of the shove ...
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