final exam astronomy102 S07

final exam astronomy102 S07 - p ASTRONOMY 1 02 FINAL...

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Unformatted text preview: p ASTRONOMY 1 02 FINAL EXAMINATION WI.” the 50131” system exist before the Sun becomes a red c) 14 billion yrs d) 5 billion yrs b) 10 billion yrs — it’s too small become a red giant 3) 1 billion yrs e) the sun will never 2) Jupiter is 5.2 AU from the sun. What is it’s period of revolution? ) 12 yrs b) 2.3 Y‘IS ‘9 140 Yrs (1) 3 Yrs - e) none of these a e radioactive decay of C0'60? 3) What force causes th (1) weak 6) magnetic alone a) em b) gravity 0) strong In the Superkamiokande experiment in Japan, " pture neutrinos? what medium is used to d) lead e) HTO a) water b) HDO c) pure deuterium star has parallax 0.2”. How far away is it? a) 1 pc b) 2 pc 0) 0.5 pc (1) 5 pc e) 2.65 pc Q7) Pick the star that is the brightest supergianti a) Sun b) Sirius C) Betelgeuse d) Polaris e) Rigel 30 solar mass star will probably end up as! b) BD c) n-star d) BH e) will evaporate a) red giant Q Star X is 3 times as hot as star Y, and has radius twice as large. What is the ration of Px/Py? a) 6 b)324 c) 36 d) 162 e) 20 @What is likely to be the ultimate fate of the Sun (far, far in the future)? a) BH b) WH 0) BD d) red giant e) n'star Q What kind of star is a Cepheid variable? a) yellow giant b) red giant c) blue giant (1) WD e) n-* 12) What is thought to cause gamma-ray bursters? a) BH swallowing matter from companion star b) new galaxy forming c) 2 galaxies in collision d) 2 n'stars in collision e) SNOVA 13) What is likely to be left after a Type-I SNOVA? a) WD b) n-star 0) BH d) BD e) nothing 14) 0 what luminosity class does Betelgeuse belong to? ..;I a) Ia b) lab 6) Ib d) II e) III 15) A star has mass of 10 solar masses, and is on the main sequence. How luminous is it, in terms of solar luminosity? 30 V, C, a) 10 b) 100 c) 1000 d) 10000 e) none of these 16 What particle carries off most energy in a Type-II SNOVA? a) photon b) neutrino c) electron d) proton e) neutron 17) What forms the crust of a n'star? a) H and He b) Fe c) n-su‘perfluid d) solidball of n e) electron degenerate gas 18) What kind of radiation signals that matter from a normal companion star has fallen onto a BH? / a) gamma rays b) much visible light c) X-rays d) UV 9) radio waves @Which type of galaxy has most gas and dust? a) elliptical b) spiral c) irregular \ § 6‘ _ .. Hg” %) An Sa galaxy hasZ g 4 (U U114}. 11% T'- ’i a) large nucleus and several spiral arms b) small nucleus and several spiral arms c) large barred nucleus and 2 spiral arms d) small barred nucleus and 2 spiral arms e) it just looks like a huge nucleus k1) Suppose the Hubble constant is 80 (kms/s)/Mpc, and is matter dominated. How old is the Universe? a) 12 billion yrs b) 18 billion yrs 0) 28 billion yrs (1) 24 billion yrs e) none of these %) Radio galaxies are usually! a) ellipticals b) spirals c) irregulars 23) What did George Smoot discover that is considered a convincing piece of evidence for the Big Bang model? a) v = Hubble constant x distance b) smooth CBR c) neutrinos d) anisotropies in CBR e) perturbations from Hubble Law 24) Pick the shape that, in 2-dimensions, has negative curvature. a) flat piece of paper b) balloon c) saddle \ £1; What constitutes dark energy? a) WIMPs b) MACHOs ‘ c) heavy neutrinos (1) energy associated with a phase transition e) dunno All questions are worth 2 points, except the last, which is worth a Nobel Prize, but will have to be graded by someone other than me, because I dunno. ...
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This homework help was uploaded on 02/06/2008 for the course ASTRONOMY 102 taught by Professor Staff during the Spring '07 term at Cal Poly.

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final exam astronomy102 S07 - p ASTRONOMY 1 02 FINAL...

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