Review material and questions from old exams

Review material and questions from old exams - -1- DEW OP...

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Unformatted text preview: -1- DEW OP ASW University of Florida 55'! 1002 LIGHT A " amplitude A - wavelength c - vulocity f - frequency f - § units: f - cyélulaac (Berta) : 1 I" 3800 1 blue (For light) I A :- mgsttom (1) (10‘3 cm) ‘ + 7600 A red c - 186,000 miles/sec c '- mteralsec, lulu: - 3 x 103 meters/sec or miles/u: Reflection :: If r for ipficular reflucicn cmmn “mam ' I index of refraction 111 3111 91 II :12 six: 82 'Sull‘s 1m Inflation m 1311:: light: is bent more white chm than rod-light since ° ugh: . n I n(f) 1.3-. the velocity .. of- li‘gh: depends on the frequency. -2- DEPABIMERT OF ASTRONOMY University of ?1otida AS'I' 1002 LIGHT com: If the velocity of light depends on the.frequency (color) we say the material is a dispersive mediue. The corresponding deviation of the light rays for different colors is called dispersion. Kinds of Sgectra 1. Continuous - arises from (1) hot solid (2) hot liquid (3) hot dense gas 2. Discrete a. Bright line (Emission) - arises from a hot tenuous gas. _ b. Absorption (fraunhofer) - arises when white light is passed through a cool tenuous gee _ Doggler Effect _ Af a f _ f. Observer Source of ‘ v _ _ é§ . g f‘ f v :5 If the souzee is receding f‘ is less than f and l’ is greater than 1 [red shift}. 2. If the source is approaching f‘ is greater then f and k’ in less than 1 . [blue shift]. -3- DEM 0.? 53mm University of Florida AS“: 1002 LIGi'r cont Atomic Structure (Hydrogen AtOm) - Bohr Hcdel n - 1 (ground state — lave“ energy) n'> 1 excited states 5 8 '1'3'5 (eigc‘n-ofl val-k) 11 n2 where En is the energy of the nth level The electron will changeorbite only if an amount of energy equal to E: - 3p 33 - El, l!h - 31, En - E1 is supplied. The energy difference (A!) can be supplied by a light particle (phctqn) which has energ given by the formula ' E - hf - h—iw h - Planck's Constant NOTE! High freqfiency corresponds to large energy and short wairelength. corresponds to large energy. - Energy Level Diagram 'wave LEN 6-114 . . (A) --> g“ . . - I . . i l_ r . _ E Lymfid Wlk “$55) 558155. - 5" . ' L 2-. “5". ed (a (mans) ) when! . as!) gene; ‘ 631.3113. ' 28 Sept 1982 UntitTed OLD EXAM QUESTIONS ./ JfiQ which of the fo]1owing statements is (are) correct? (a) The eccentricit of a pianet's orbit is its average distance from t e Sun. (b) Periheiion is the point of closest approach to the Sun in a p1anet‘s orbit. (c) Newton's second 1aw states that F = ma The correct answer is AA 1 (1) b and c (2) c on1y (3) a and b (4) b onTy (5) a and c v/EQ which of the foi1owing statements is (are) correct? (a) Kep1er's third 1aw states that the force of action equais the force of reaction. _ (b) Einstein's Special Theory of Re1ativity expiained the firecession of the perihe1ion of Mercury. _ (c) of t e forces in nature, the gravitationai force 15 stronger than the e1ectromagnetic force. The correct answer is AA 1 (1) b on1y (2) a and c (3) b and c (4) c on1y (5) a on1y V/fiQ which of the fo11owing statements is (are) correct? (a) The edge of a 1on9 e11ipse 1ooks Tike a paraboia. (b) The eccentricity of a hyperboia is greater than one. (c) The center of gravity of two masses is c1oser to the less ma551ve one. The correct answer is AA 1 (1) a and b (2) c on1y (3) b on1y (4) a and c (5) a on1y .//QQ which of the fo11owing is (are) correct? (a) An astronomica1 unit is the average distance between Jupiter and the Sun. (b) one can determine the mass of a p1anet by watching a moon go around it. (c) P1anets orbit the Sun in orbits which are conic sections. The correct answer is AA 1 (1) b-and c (2) a and c (3) b on1y (4) a and b (5) c on1y v/fih which of the fo11owing is (are) correct? (a? An x—ray photon has more energy than a gamma ray photon. _ CB) Radio waves have shorter wave1engths than iight waves. (c) white is defined as as an equa1 amount of a11 wave1engths. The correct answer is AA 1 (1) a and c (2) a and b (3) b and c 6E):2 on1y (5) a oniy j QQ which of the_fo1iowing is (are) correct? Page 1 Untit1ed (a) For every electric wave there is a corresponding gravity wave at ri ht angies to it. (b) Biue 1ight has a s orter waveiength than red 1ight. (c) Light waves are transverse waves. The correct answer is AA 1 (1) b and c (2) c only (3) b on1y (4) a and b (5) a and c y/hQ which of the fo110wing is (are) correct? (a) The Lyman series spectrum for hydrogen faiis in the uitravioiet portion of the spectrum. (b) The H-Beta emission line is the resu1t of an electron jumping from the n=2 1eve1 to the n=4 1eve1. (c) Biack bodies are poor absorbers. The correct answer is AA 1 (1) a on1y (2) a and b (3) b and c (4) a and c (5) b on1y b/floo which of the fo11owing is (are) correct? (a) If a 1ight source recedes. the observer sees a redshift in the light it emitsr (b) A spectra1 1ine is broadened as the pressure increases. (c) Hot hydrogen gas emits the same spectrum as hot heTium gas. The correct answer is AA 1 (1) a and b (2) b and c (3) a on1y (4) a and c (S) c on1y L//63 which of the fo11owing is (are) correct for Terrestria1 p1anets? (a) They rotate more siow1y than Jovian pianets. (b) They are Targer than Jov1an pianets. (c) They are 1ess dense than Jov1an pianets. The correct answer is AA 1 (1) a oniy (2) b and c (3) a and c (4) b onIy (5) a and b QLQQ which of the foi1owing is (are) correct? (a) The Earth's ma netosphere is encased by a shock 1ayer ca11ed t e Van A1ien be1t. (b) Weather on the Earth occurs in Stratosphere. (c) Aurorae on the Earth are caused by activity on the Sun. The correct answer is AA 1 (1) c on1y (2) b and c (3) a on1y (4) b oniy (5) a and b v/QQ which_of the fo110wing parameters is (are) important in determining whether or not a part1cu1ar element W111 remain in a pianet's atmosphere? (a) temperature (b) moiecuiar (or atomic) weight (c) escape veiocity The correct answer is AA 1 (1) a, b and c (2) a and c (3) b oniy (4) b and c (5) a and b V/fiQ which of the fo110wing is (are) common to ALL p1anets? Page 2 Untitied (a) They have strong magnetic fieids. (b) They revo1ve eastward around the Sun. (c) Their axes of rotation are neariy perpendicuiar to the ec1iptic. The correct answer is AA 1 (1) b on1y (2) a and b (3) a only (4) c onTy (5) b and c V/EQ A 5050 Angstrom source approaches me. I observe a wave1ength of 5000 Angstroms. How fast is the source moving? ( HINT: c 15 the speed of 1ight ) The correct answer is ' AA 1 (1) c/lOl (2) c/ll (3) c/lOO (4) c/lO (5) c/SOOO QQ which of the fo1iowing is (are) correct? v(a) If the temperature of a biack body is doubied, the tota1 radiated power per unit area (the intensity) wi11 ,. increase by a factor of four. Z'(b) Aurorae on the Earth occur on1y at the North Po1e. ‘Z(c) Near the Earthjs geographic north po1e is found the Earth's magnetic south po1e. The correct answer is AA 1 (1) c on1y (2) a on1y (3) a and c (4) a and b (5) b and c QQ which of the fo11owing is (are) correct? 1(a) The Earth's crust is denSer than its mant1e. V’Ib) Mars is a Terrestria1 p1anet. 1(c) Currents in the Earth's outer core are thought to be the cause of the Earth's magnetic fie1d. The correct answer is AA 1 (1) b and c (2) a and c (3) b on1y (4) c on1y (5) a and b V/éh If the semi—major axis of a pIanet's orbit is 16 AU, what is 1t5 period? The correct answer is AA 1 (1) 64 years (2) 16 years (3) 256 years (4) 4 years (5) 32 years QQ which of the fol1owing is (are) correct? :ga) P1uto is a Jovian planet. b) The Kuiper be1t 1ies between Mars and Jupiter. (c) Mars' po1ar caps are made of both water ice and carbon dioxide ice. The correct answer is AA 1 (1) c on1y (2) a and c (3) a only (4) b and c (5) a and b QQ which of the fo11owing is (are) correct? via) Ceres is the 1argest asteroid. (b) The southern hemisphere of Mars has more severe seasons than the northern hemisphere. 31c) The basic reaction in the Sun's core is chemical combustion. Page 3 Untitied The correct answer is AA 1 (1) a and b (2) b oniy (3) c oniy (4) a on1y (5) a and c 9/66 which of the foiiowing is (are) correct? (a) The dust tai1s of comets are generaiTy curved. (b) The coma of a comet is about 0 mi1es across. (c) Comets are rocky in composition. The correct answer is AA 1 (1) a oniy (2) a and c (3) a and b (4) b and c (5) b oniy V/QQ which of the foiiowing is (are) correct? (a) Meteor showers occur when the Earth passes through the asteroid be1t. (b) Iran meteorites are the most common. (c) The point from which shower meteors appear to originate is ca11ed the "radiant". The correCt answer is AA 1 (1) c onTy (2) b oniy (3) a and c (4) a and b (5) a only o//6Q which of the fo11owing is (are) correct? (a) Meteoroids are rea11y sma11 asteroids. (b) A "meteorite" is the remnant of a meteor after it hits the ground. (c) A typica1 shower meteor weighs about one ton. The correct answer is AA 1 (1) a and b (2) a oniy (3) b only (4) c on1y (5) b and c ZfQQ which of the foiiowing is (are) correct? (a) fin1the Sun's core, hydrogen is transformed into e ium. (b) Using the geeman effect, one can measure the magnetic f1e1ds of sunspots. (c) Pressure from neutrinos keeps the Sun from co11ap51ng. The correct answer is AA 1 (1) a and b (2) a and c (3) b and c (4) a on1y (5) b on1y 2_QQ Which of the f011owing is (are) correct for sunspots? (a) Thfiy genera11y occur in pairs with one north of the ot er. (b) They are hotter than the surrounding areas on the Sun's surface. (c) They occur at iower 1atitudes as the sunspot cycie progresses. The correct answer is AA 1 (1) c on1y (2) a oniy (3) b oniy (4) a and c (5) a and b Z'QQ which of the fo11owing is (are) correct for the soiar atmosphere? (a) It gets hotter as you move away from the Sun's sur aCe. (b) 501ar fiares occur in the photosphere. (c) Prominences occur near the 1imb of the Sun. Page 4 Untitled The correct answer is AA 1 (1) a and c (2) a only (3) c only (4) a and b (5) b and c ZQQ which of the following is (are) correct? (a) Energy is trans orted from the Sun's core to its surface primari y by a process called radiative transfer. (b) It takes about five minutes for energy from the Sun's core to reach its surface. (c) The CNO cycle describes the process of energy production in the Sun's core. The correct answer is AA 1 (1) a only (2) c only (3) b only (4) a and b (5) b and c QQ which of the following is (are) correct? 1 (a) Magnetic storms occur on the Earth when the sun is near sunspot max1mum. ((b) If the stellar parallax of a star is .1 arc sec the distance to it is 100 parsecs. ; (c) If one_star is five magnitudes less than another star, 1t 15 100 times ainter than that second star. The correct answer is AA 1 (1) a only (2) a and b (3) a and c (4) b only (5) c only Z/QQ which of the following is (are) correct? (a) The primary source a_star's energy is meteorite infall. (b) A stellar spectrum Visible from t e Earth 15 an absorption spectrum. (c) The H and R in the term, "HR Diagram", stand for Hertzsprung and Russell. The correct answer is AA 1 (1) b and c (2) c only (3) a, b and c (4) a and b (5) b only ZLQQ which of the following is (are) correct? (a) Hot stars evolve more guickly than cool stars. (b) 0n the main sequence 0 the HR diagram the more luminous stars are more ma551ve. (c) A spectral type F star is cooler than one-of spectral type G. The correct answer is AA 1 (1) a and b (2) b only (3) c Only (4) a only (5) b and c QQ which of the following is (are) correct? ?«(a) Sgectroscopic binary stars are those determined to be so by 0 serv1ng the star's parallax. (b) single line spectroscopic binary stars are those with only one star. QHCC) Most of the stars in our galaxy are members of multiple star systems. The correct answer is AA 1 (1) c only (2) b only (3) b and c (4) a and b (5) a and c zqqq which of the following is (are) true for population I stars? Page 5 Untitied (a) They are 01d stars. (b) They contain on1y H and He. (c) The sun is a population I star. The correct answer is AA 1 (1) c oniy (2) b on1y (3) b and c (4) a and c (5) a and b QZfiQQ which of the foiiowing is (are) correct? (a) He1ium is made from hydrogen in main sequence stars. (b) The absoiute magnitude of a Cepheid variabie depends on its period. (c) One wou d expect a binary star system to contain p1anets. The correct answer is AA 1 (1) a and b (2) b oniy (3) a and c (4) a on1y (5) c oniy ZLAQQ Which of the foiiowing is (are) correct? (a) white dwarfs contain a super conducting materiai. (b) Uranium 15 produced 1n red giant_stars. (c) The triple aipha process occurs in main sequence stars. The correct answer is AA 1 (1) a on1y (2) b on1y (3) c on1y (4) a and b (S) a and c ZLQQ which of the foiiowing is (are) correct for biack ho1es? (a) Electromagnetic waves 510w down as they recede (move away) from the event horizon. (b) An observer fa11ing into a biack ho1e wouid notice that his ciock s1owed down. (c) Th§_event horizon is defined by the Schwarzschi1d ra ins. The correct answer is AA 1 (1) c on1y (2) b oniy (3) a and b (4) a and c (5) b and c 2; Q0 which of the foiiowing is (are) correct? 2(a) A11 pu1sars are neutron stars. 1(b) Puisars u}se at a ver _constant rate. _ 21c) The Eart 's moon stabd izes its ax1s of rotation. The correct answer is AA 1 (1) a and c (2) c oniy (3) b and c (4) a and b (5) b oniy 27QQ which of the foiiowing is (are) correct? (a) A1] cool stars are sma11er than a11 hot stars. (b) Spirai gaiaxies have more angu1ar momentum than e 1ipticais. (c) The Sun is 1ocated in the haTo of the Mi1ky Way Gaiaxy. The correct answer is , AA 1 (1) b oniy (2) a on1y (3) c only (4) a and b (5) b and c 'ZsQQ which of the foiiowing is (are) correct? (a) Type II supernovae occur in binary systems. Page 6 Untitied (b) The period—iuminosity re1ationship is vaiid on1y for 'main sequence stars. (c) Elements heavier than iron are produced in supernovae. The correct answer is AA 1 (1) c on1y (2) b on1y (3) a and c (4) b and c (5) a onTy QQ which of the foiiowing is (are) correct? 2.(a) The Tu11y-Fischer re1ation uses the rotation of a gaiaxy to determine its distance. 2L(b) Supernovae can occur onTy once in a given star. (c) Spirai arms in a gaiaxy are thought to be density waves. The correct answer is AA 1 (1) a, b and c (2) a oniy (3) a and b (4) a and c (5) c on1y 2; QQ which of the fo11owing is (are) correct? (a) The Mi1k Way is a barred spira1 ga1axy. (b) We say t ere is "missing mass“ in ga1axies because we can't see enough materia1 to ex 1a1n the gravity that appears to ho1d them toget er. (c) The 3 degree background radiation arose at the time of inf1ation in the ear1y universe. The correct answer is AA 1 (1) a and b (2) a, b and c (3) a on1y (4) a and c (5) b and c QLQQ If Hubbie's constant is 50 km/sec/M c, an object receding from us at the rate of 5000 km/sec wou d be away. AA 1 (1) 100 Mpc (2) 250,000 Mpc (3) 5050 Mpc (4) 4950 Mpc (5) 1/100 Mpc ZLQQ which_of the fo1iowing is (are) important in the determination of the 5128 of the Universe? (a) A11 objects at great distances show red shifted spectra. (b) The radius of t e event horizon of a b1ack ho1e is given by the expression R = 3M. (c) The Chandrasekhar 1imit. The correct answer is AA 1 (1) a on1y (2) b on1y (3) c oniy (4) a and b (5) a and c 2,QQ_whiCh of the fo110wing pertainCs) to the term "decoup1ing" in the "Big Bang" cosmoiogy? r (a) when Tight breaks free from the event horizon in a b1ack ho1e. (b) when photons no ionger scattered off of e1ectrons which had attached themseives to ions to form neutra1 atoms. - (c) when the universe became transparent to neutrinos. The correct answer is AA 1 (1) b oniy (2) a only (3) c oniy (4) a and b (5) b and c QJQQ which of the foiiowing pertain to inf1ation of the eariy Universe? Page 7 Untitled (a) It was a hyper—light speed expansion of space in the early universe. (b) It was proposed to explain why the microwave background (3K radiation) is so uniform. (c) It was used to explain the irregularities in the cosmic background radiation. The correct answer is - AA 1 (1) a, b and c (2) a and b (3) a and c (4) b and c (5) a only :ZQQ which of the following is (are) correct? (a) The primary constituent element of the human body is hydrogen. (b) T e Earth's atmosphere is mostly oxygen. (c) All life on Earth uses left—handed amino acids only. The correct answer is AA 1 (1) a and c (2) a, b and c (3) a and b (4) b and c (5) c only ZwQQ which of the following pertains to the element carbon? Ea)“ls the most common element in the Earth's crust. (b) Forms stronger chemical bonds than $111C0n. (c) Possesses 51x outer shell electrons. The correct answer is AA 1 (1) b only (2) a and b (3) b and c (4) a only (5) c only 2>QQ which of the following is (are) correct? (a) Photosynthesis is a rocess in which living organisms convert light into c emical energy. (b) The structure of RNAi like DNA, 15 a double helix. (c) The nucleotides which make up the genetic code in DNA are amino acid base pairs. The correct answer is AA 1 (1) a and c (2) a only (3) c only (4) a and b (5) b and c g; QQ which of the following is (are) correct? ' s are monomers. (b) mRNA and rRNA are really the same thing. I (c) The early atmosphere of the Earth was notable for 1t lack of oxygen. The correct answer is AA 1 (1) a and c (2) a. b and c (3) b and c (4) a and b c only ZWQQ which of the following is (are) correct? (a) Eukaryotes are just large prokaryotes. (b) The Miller-Urey experiment used a simulation of the Earth's atmosp ere and lightnin to create DNA. (c) One theory for polymerization 0 amino acids into DNA asserts t at it originally occured in clays. The correct answer is AA 1 (1) c only (2) a and c (3) b and c (4) a and b (5) b only :5 QQ which of the following pertain to the Cambrian explosion. Page 8 Untitied (a) The sudden appearance of complex 1ife forms. (b) Occurred when the content of oxygen in the Earth's atmosphere suddeniy dropped. (c) Was caused by the Chicxu ub event. The correct answer is AA 1 (1) a on1y (2) a and b (3) a and c (4) b on1y (5) c oniy QQ which of the foiiowing is (are) correct? 2(a) Some meteors contain oniy left handed amino acids. 3(b) Mutation is defined to be "any change in DNA structure". 3(c) Extremphiies are noted because they can exist in unusua env1ronments. The correct answer is AA 1 (1) b and c (2) a and b (3) a and c (4) b on1y (5) c onTy 3,QQ which of‘the foi1oWing pertain to Endosymbiotic Theory? (a) Exp1ains the transition of birds to dinosaurs. (b) Expiains the deveiopment on eukaryotes from prokaryotes. (c) Exp1a1ns the appearance of Edacaran Fauna. The correct answer is AA 1 (1) b on1y (2) a and b (3) b and c (4) a on1y (5) c oniy 3 QQ which of the fo110wing is (are) correct? (a) Stromato1ites first appeared after the Permian extinction (b) The KwT boundary contains a p1ethora of diamonds. (c) In order to reproduce and adapt, we expect that 1ife forms wi1 need a compiex reproductive code. The correct answser is AA 1 (1) c on1y (2) a and c (3) b and c (4) a on1y (5) b oniy 2500 which of the fo11owing is (are) correct? (a) Archaea are distin uishab1e from other 1ife on Earth by their unusua1 c emica1/oenetic makeup. (b) B ack smoker ecosystems re y on extremophiie archaea which reduce su1fur. (c) Aquifex AeoTicus is an examp1e of an extremophiie. The correct answer is AA 1 (1) a, b and c (2) a and b (3) a and c (4) b and c (S) c on1y I QQ which of the f011owing statements is (are) correct? (a) The eccentricity of a p1anet's orbit is greater for more eiongated orbits. (b) Perihe1ion is the point of c1osest approach to the Sun in a pianet's orbit. (c) Kep1er's second 1aw states that F = ma The correct answer is AA 1 (1) a and b (2) a on1y (3) b and c (4) b only (5) a and c ( QQ which of the foiiowing statements is (are) correct? Page 9 Untitied (a) The center of gravity of two masses is c1oser to the 1ess massive one. (b) One can determine the mass of a star by watching a pianet go around it. (c) The eccentricity of a circTe is zero. The correct answer is AA 1 (1) b and c (2) a and c (3) b on1y (4) a and b (5) c on1y .EQQ which of the foiiowing is (are) correct? (a) Carbon dioxide causes the "Greenhouse"_effect on Venus. (b) C1ouds on Venus are mostiy suifuric ac1d. (c) Mercury has a strong magnetic fieid. The correct answer is AA 1 (1) a and b (2) b on1y (3) c on1y (4) a on1y (5) a and c j QQ which of the foiiowing is (are) correct? (a) Scarps on Mercury were created when Mercury cooied. (b) We're certain that there's no water of any kind on Mercury. (c) High winds on Venus are driven by its rotation on its ax1s. The correct answer is AA 1 (1) a on1y (2) a and b (3) a and c (4) b on1y (5) c on1y j QQ which of the fo11owing is (are) correct? (a) Many think that some coo? spots where iife cou1d form may exist on Venus. (b) There are many craters on Venus. (c) The 1argest vo1canic structures on Venus are ca11ed coronae. The correct answer is AA 1 (1) c on1y (2) a and c (3) b and c (4) a only (5) b on1y _3 QQ which of the fo110wing is (are) correct? (a) Jupiter's moon I0 is considered to be a piace where 1ife could exist. (b) The Cassini spacecraft 1aunched a probe into the atmosphere of Titan. (c) Titan may have oceans of ethane. The correct answer is AA 1 (1) b and c (2) a and b (3) a and c (4) b on1y (5) c on1y 3 on which of the foiiowing is (are) correct? (a) A11 of the Jovian €1anets have magnetic fieids. (b) A11 of the chemica s needed for iife are found on the Jovian p1anets. _ (c) Europa is rocky so one wou1d not 100k for 11fe there. The Correct answer is j/ AA 1 (l) a and b (2) a and c (3) b and c (4) a, b and c (5) b only QQ In which of the f011owing p1aces wouid one expect to find 1ife Page 10 . _ UntitIed supporting p1anets? (a) spira1 gaiaxies (b) gaiactic nuc1ei (c) ga1actic ha1os (d) active ga1axies The correct answer is AA 1 (1) a oniy (2) a and b (3) b on1y (4) c on1y (5) a and C QQ which of the fo11owing sets the Earth apart from other pianets? (a) It rotates on its axis. (b) It 11es in the habitable zone. _ (c) Water ex1sts on it at the tripTe p01nt. The correct answer is AA 1 (1) b and c (2) a and c (3) a and b (4) b on1y (5) a on1y QQ which of the fo110wing is important in determining the habitab1e zone for a star? (a) mass bf (b) 1uminosity (c) magnetic fie1d The correct answer is AA 1 (1) a and b (2) a and c (3) b and c (4) a oniy (5) b on1y QQ which of the fo11owing is (are) correct? (a) The first exoplanets were discovered about 50 years ago. (b) We can measure a star's ve1ocity to an accuracy of a few meters/sec using spectrosco y. (c) Most exop1anetary systems Took ike the So1ar system. 2;; The correct answer is AA 1 (1) b on1y (2) a and b (3) b and c (4) a onTy (5) a and c QQ which of f011owing is (are) correct? (a) The first exopianets discovered were in a neutron star system. I ‘7 (b) 51 Pegas] has a "hot Jupiter" planet. I (c) MARVELS 15 the name of the UF exop1anet prOJect. The correct answer is AA 1 (1) a, b and c (2) a and b (3) a and c (4) b and c (5) c on1y QQ which of the fo11owing is (are) correct? (a) We have discovered severa1 Earth—1ike exop1anets a1ready. Vi (b) Most exoplanets are gas p1anets L, e e; (c) 51 Pegasi has three pianets in its system. ’1 c; ‘ 5 The correct answer is AA 1 (1) b on1y (2) a and b (3) b and c (4) a only (5) a and c QQ which of the fo11owing is (are) correct? (a) A "transit" in an exop1anetary system is just the same £4 as_an ec1ipse._ (b) SC1entists be11eve that they may have found water on an Page 11 Untit1ed exopianet. (c) §1iese 581 is thought to have two pianets, one of which 15 in a habitabTe zone. AA 1 (1) a and b (2) a, b and c (3) a and c (4) b and c (5) c on1y QQ which of the fo1lowing is (are) correct? (a) We have found exop1anets in habitabTe zones. 7 (b) 0n1y a smai1 fraction of the stars in the Mi1ky Way ga1axy are G—type stars. _ (c) Many exop1anets are "hot Jupiters". The correct answer is . AA 1 (1) a, b and c (2) a and b (3) a and c (4) b and c (5) b on1y QQ which of the fo11owing is true for a "hot Jupiter"? (a) Its mass is c1ose to that of Jupiter. (b) It's hot because of extreme interna1 heating. % (c) It's close to 1tS parent star. The correct answer is AA 1 (1) a and c (2) a and b (3) b and c (4) a on1y (5) c on1y QQ which of the f011owing is (are) correct? (a) One wou1d expect to find water on a "hot Jupiter". a (b) One might find water on the moon of a Jupiter—512ed exop1anet in a star‘s habitab1e zone. (c) One might use a ste11ar coronagraph to find exop1anets. The correct answer is AA 1 (1) b and c (2) a and b (3) a and c (4) b on1y (5) a. b and c QQ which the fo110wing were ear1y rocket scientists? (a) Robert Goddard (b) A1bert Einstein (c) Enrico Fermi ' The correct answer is AA 1 (1) a on1y (2) a and b (3) a and c (4) b and c (5) c on1y QQ which of the fo110wing is (are) correct? /,§f (a) The new NASA 1aunch vehicie which w111 take humans back fku to the moon is caT1ed the At1a5—Agena spacecraft. At (b) Thrust is to spacecraft what fue1 effic1ency 15 to autos._, §fzcs ‘9 (c) We want the specific impu1se of a spacecraft to be a :zhefu1se Targe number. The correct answer is AA 1 (1) c on1y (2) a and c (3) b and c (4) a onTy (5) b on1y QQ which of the fo11owing is (are) correct? (a) Most of the mass of our current space rocket 1aunching v] systems is fue). (b) Ion rocket engines have greater thrust than those of chem1ca1 rockets. (c) It's impossib1e to make anti-matter. Page 12 _ Untit1ed The correct answer 15 AA 1 (l) a oniy (2) b oniy (3) c on1y (4) a and b (5) a and b QQ Most exopianets that we know of are c1ose to their parent star because: (a) Most are created c1oser to other stars than in the SoTar £7 sKstem. I (b) T at's where we can best d1sc0ver them. (c) The outer p1anets have been thrown out of their systems. The correct answer is AA 1 (1) b on1y (2) a and b (3) b and c (4) a on1y (5) c oniy QQ which of the fo110wing is (are) problems for interste11ar trave1? (a) Spacecraft mass 47 (b) Mission e1apsed time (c) High ve1ocity particles The correct answer is AA 1 (1) a, b and c (2) a and c (3) b and c (4) a and b (5) b on1y QQ which of the fo110wing is (are) correct? (a) High eccentricity orbits pose a probTem for the potentia1 deve1opment of 1ife. ' . L1 (b) Giant pianets wou1d be a eood p1ace for us to 100k for 11fe. (c) when we 5 eak_of the meta icity of stars we mean e1ements heavier t an iron. The correct answer is AA 1 (1) a on1y (2) a and b (3) a and c (4) b and c (5) c on1y QQ The Drake Equation includes a11 of the fo11owing except: AA 5 1 (1) the number of giant pianets per star in the Ga1axy (2) the number of stars in the Ga1axy (3) the number of soiid pianets 1n the habitab1e gone per parent star (4) the fraction VT of suitabie pianets on which Tife deve1o s (S) the fraction of Tife—bearing p1anets which deve1op inte1 igence I’)&5L[L e_ QQ which of the fo110wing is (are) correct? (a) Most stars_in our ga1axy are 0 type stars. I kt (b) By "inte1iigent" 1ife we mean creatures that make too1s. #1 (c) Br "1nte11igent" 11ft we mean creatures that dominate a 1 of the other creatures. The correct answer is AA 1 (1) None is correct (2) a only (3) b on1y (4) c oniy (5) b and c QQ which of the foiiowing is (are) correct? (a) We shou1d be ab1e to trave1 interste11ar distances by trave1ing through a biack ho1e. F1 (b) Fermi wondered _where are the resident aTiens"? (c) Nature? extinctions are a "fact of life". The correct answer is I - AA 1 (1) b and c (2) a and b (3) a and c (4) b on1y (5) a, b and c Page 13 ...
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Review material and questions from old exams - -1- DEW OP...

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