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STUDY GUIDE FOR TEST 1

by: Alma Rose Jackson

67

1

4

STUDY GUIDE FOR TEST 1 ASTR 170B1

Marketplace > University of Arizona > ASTR 170B1 > STUDY GUIDE FOR TEST 1
Alma Rose Jackson
UA
GPA 3.0

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CHAPTERS 1-5 OF WHAT WE HAVE DONE IN CLASS STUDY GUIDE FOR TEST 1
COURSE
The Physical Universe
PROF.
Daniel Marrone
TYPE
Study Guide
PAGES
4
WORDS
CONCEPTS
astronomy
KARMA
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This 4 page Study Guide was uploaded by Alma Rose Jackson on Monday September 19, 2016. The Study Guide belongs to ASTR 170B1 at University of Arizona taught by Daniel Marrone in Fall 2016. Since its upload, it has received 67 views.

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Date Created: 09/19/16
Astronomy:   170B1  T   he   Physical   Universe  Week   4  S  tudy   Guide   for  T   est   #1    Chapter   1­2  ­  __1____:     The   distant   light   can   trav n   a  ear  10   trillion   kilometers)  ­  __2____:    The   path   the   sun   traces   out   in   the   sky  ­The   tilt   o he    arth’s   axis   is   what   makes     ___3____.  ­  __4____:  i   s   when   the   Moon   rotates    nce   with   every   orbit.  When  w   e    nly   see   one   side  f   the   moon.)    Phases   of   the   Moon   (below)                                ­The   phases   of   the   moon   are     __5___,    Waxing  C   rescent,   First   Quarter,  _   __6___,     ull   oon,   Waning  Gibbous,   Third  Q   uarter,  _   __7___,   N  ew   Moon.  ­  __8___   e   clipses   can    nly   occur    hen   the    oon   is   pposite  o   f   the   sun.   ­  __9___    eclipses  o   nly   occur   when   the    oon   is   on   the ame   side   of   he   Earth   as   the   sun.          Chapter  3       ­  __1___:  W    hen   it   looks ike   Mars   s   going   westward  i  nstead   of   eastward   only    ecause   the    arth   s  moving  s  o   uickly   past   it.                  ­Ptolemy:   ­Ptolemy   stated  t  hat     __2___    were   equired   to    pproximate   retrograde   motion.  ­This   model   had   the   Earth   as   the   center   of   the   universe.  ­The   Ptolemaic   model  w   as    ot  orrect  ­Copernicus:  ­Continued   with   the   theory   of   epicycles   but   had   a   more   mathematically   grounded   model.   ­The   sun   was   at   rest   in   the   center   of   the   model   while   the   Earth   and   the   other   planets   orbited   around   it.   ­Tycho  B   rahe:  ­Had   extremely   precise   measurements  ­His   model   had  _   __3___    being   stationary   with   the   sun  rbiting   around   it.   And   the  ther   lanets   would  orbit   the   sun.   ­Kepler:    ­Made   a   model   based   on   “Platonic  S   olids”  ­Planets   move   on  _   __4___,     ot   circles.  ­His   mathematical   model   matches   Tycho’s   measurements.  ­  epler’s   Laws:  ­First   Law:   The   orbit   of   each   planet   around   the   sun   is   an   ellipse   with   the   sun   at   one   focus.  ­Second   Law:   As   a   planet   moves   around   its   orbit,   it   sweeps   out   equal   areas   in   equal   times.  ­Third   Law:   Orbits   obey   the   relationship   p^2=a^3,   p=orbital   period   in   years   and   a=average   distant   from  the   sun   in   AU.   More   distant   planets   orbit   the   sun   at   slower   speeds.    ­___5___:  ­First   to   point   a   telescope   at  astronomical   objects.  ­The   first   to   discover  ountain  and   craters   on   the   moon   and  sunspots   on   the   sun  ­Also   discovered  t  hat   there   are  moons   around  o   ther   planets    Chapter  4     ­  __1___:     How   far   you   go   in   how   much   time  ­  __2___:     Combination   of  peed  a  nd   direction  ­  __3___:     rate   of   cha  f   velocity   (speed   or   direction).  ­  __4___:     mass   times   velocity,   involves   speed   and   direction  ­  __5___:     The   quantity hat   can  hange   the   momentum  ­  __6___:     The   total   amount   orces   on   an   object,   including   direction,   determines   its   acceleration    ~Newton’s   Laws  1st   Law­    n   object   will   remain   at   rest   or   mot     unless   acted   upon    n   xternal   orce.  2nd   Law­   Force       Mass   times   acceleration  ­Gravitational   acceleration   is   the   same   for   all   objects  ­Net   orce   is   not   necessaril he   same.  3rd   Law­   For   every   force   there   is   an   equal   and   opposite   reaction   force.    ­  __7___    Energy:  E  nergy   of   Motion  ­Radiative   energy:   Energy   of   light  ­  __8___    Energy:  T  emperature  ­Potential   Energy:   Energy   you   can   release   in   some   other   form.  ­Astrophysical   Gravitational   Energy:   Material   heats   up   as   it   falls   inward   and   gets   more   dense.  ­  __9___E   nergy:   E=mc^2    ­The   Universal   Law   of    ravitation:         ­Every   mass   attracts   every   o  ass.        ­Attraction   is   directly   proportional   to   the   product   of   their   masses.        ­Attraction   is   inversely   proportional   to   the   square   of   the   distant   between   their   centers.     Force=Mass1  x      Mass2     distance    Chapter  5     ­  __1___=M   1   x   M2/d^2  ­Light   Pieces    re   __2___.  ­More   Energy=Higher   Frequency=Shorter   Wavelength  ­  __3___:    Light    iven   off     atter   ­  __4___:  E   nergy   of ight   deposited   in   matter  ­  __5___:  L   ight   bounces   off   of   materials  ­  __6___:  L   ight   ay   pass   through   some   materials   (such   as   glass)  ­Electrons   are   only   allowed   in   specific   energy   levels  ­Spectra   of   astrophysical   objects   are   usually   combinations    f  mission  l ine   spectra,   __7___  s  pectrum  and   absorption  l ine   spectrum.  ­Doppler   Effect:   Things   moving   towards   you=  _    __8___    hift.   Things   moving   way   from   you=    ___9___  shift.  ­Blackbody  S   pectra    epends  o  n   the   temp.      Chapter   5  nswers  1. Force  2. Photons  3. Emission  4. Absorption  5. Reflection  6. Transmission  7. Continuous  8. Blue  9. Red    Chapter   4  nswers  1. Speed  2. Velocity  3. Acceleration  4. Momentum  5. Force  6. Net  F  orce  7. Kinetic  8. Thermal  9. Mass    Chapter   3  nswers  1. Retrograde  M  otion  2. Epicycles  3. Earth  4. Ellipses  5. Galileo    Chapter   1  nswers  1. Light   Year  2. Ecliptic  3. The   Seasons  4. Synchronous   Rotation  5. New   Moon  6. Waxing   Gibbous  7. Waning  C   rescent  8. Lunar  9. Solar    ­A.Jackson

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