Questions and Correct Answers 2025
Planetary ,___ ,have ,common ,plane ,and ,direction, ,low ,eccentricity; ,- ,CORRECT
,ANSWER-orbits
___shows ,similar ,order; ,- ,CORRECT ,ANSWER-Rotation
Moons ,have ,similar ,___. ,- ,CORRECT ,ANSWER-motions
Orbital ,spacing ,___random. ,- ,CORRECT ,ANSWER-not
Terrestrial ,and ,Jovian ,planets ,show ,___ ,and ,composition ,- ,CORRECT ,ANSWER-
trends ,in ,size
The ,collapse ,of ,an ,interstellar ,cloud. ,As ,the ,cloud ,contracts, ,it ,rotates ,faster, ,and ,the
,outer ,parts ,flatten ,into ,a ,disk. ,This ,can ,be ,observed ,happening ,elsewhere ,in ,our
,Galaxy ,today. ,As ,disk ,cools, ,solid ,grains ,form; ,more ,volatile ,ices ,found ,only ,in ,the
,outer ,part. ,Accretion ,of ,grains ,(sticky ,collisions) ,produce ,planets; ,- ,CORRECT
,ANSWER-The ,collapse ,of ,an ,interstellar ,cloud. ,As ,the ,cloud ,contracts, ,it ,rotates
,faster, ,and ,the ,outer ,parts ,flatten ,into ,a ,disk. ,This ,can ,be ,observed ,happening
,elsewhere ,in ,our ,Galaxy ,today. ,As ,disk ,cools, ,solid ,grains ,form; ,more ,volatile ,ices
,found ,only ,in ,the ,outer ,part. ,Accretion ,of ,grains ,(sticky ,collisions) ,produce ,planets;
Jovian ,planets ,grow ,even ,larger ,by ,attracting ,___abundant ,gases. ,- ,CORRECT
,ANSWER-cold
Many ,extrasolar ,planets ,(orbiting ,other ,stars) ,have ,been ,found ,in ,the ,last ,decade ,by
,___ ,techniques. ,Most ,are ,"hot ,Jupiters" ,but ,this ,is ,probably ,a ,selection ,effect. ,-
,CORRECT ,ANSWER-Doppler ,or ,transit
Factors ,influencing ,the ,odds ,of ,life ,as ,we ,know ,it ,include ,the ,number ,of ,stars, ,the
,fraction ,like ,the ,Sun, ,fraction ,not ,binary ,or ,multiple, ,fraction ,with ,planets, ,and ,the
,number ,of ,nice ,planets ,per ,star. ,Harder ,to ,quantify ,factors: ,origin ,of ,life, ,intelligence,
,and ,survival. ,- ,CORRECT ,ANSWER-Factors ,influencing ,the ,odds ,of ,life ,as ,we ,know
,it ,include ,the ,number ,of ,stars, ,the ,fraction ,like ,the ,Sun, ,fraction ,not ,binary ,or
,multiple, ,fraction ,with ,planets, ,and ,the ,number ,of ,nice ,planets ,per ,star. ,Harder ,to
,quantify ,factors: ,origin ,of ,life, ,intelligence, ,and ,survival.
, There ,is ,___ ,that ,would ,satisfy ,an ,astronomer ,that ,other ,civilizations ,have ,visited ,us
,as ,"UFOs". ,- ,CORRECT ,ANSWER-no ,evidence
___ ,would ,be ,faster ,and ,cheaper. ,- ,CORRECT ,ANSWER-Radio ,signals
Most ,probable ,would ,be ,the ,detection ,of ,a ,greeting ,from ,a ,more ,advanced
,civilization, ,or ,perhaps ,just ,picking ,up ,their ,radio ,noise. ,No ,results ,to ,date, ,but ,the
,next ,few ,decades ,may ,give ,the ,answer. ,- ,CORRECT ,ANSWER-Most ,probable ,would
,be ,the ,detection ,of ,a ,greeting ,from ,a ,more ,advanced ,civilization, ,or ,perhaps ,just
,picking ,up ,their ,radio ,noise. ,No ,results ,to ,date, ,but ,the ,next ,few ,decades ,may ,give
,the ,answer.
Detecting ,message ,content ,would ,be ,much ,more ,difficult ,than ,just ,the ,raw ,signal's
,existence, ,and ,require ,much ,more ,sensitivity ,than ,currently ,available. ,- ,CORRECT
,ANSWER-Detecting ,message ,content ,would ,be ,much ,more ,difficult ,than ,just ,the ,raw
,signal's ,existence, ,and ,require ,much ,more ,sensitivity ,than ,currently ,available.
It's ,too ,late ,to ,hide. ,Another ,equally-advanced ,civilization ,would ,have ,the ,same ,tools
,to ,find ,us. ,- ,CORRECT ,ANSWER-It's ,too ,late ,to ,hide. ,Another ,equally-advanced
,civilization ,would ,have ,the ,same ,tools ,to ,find ,us.
Methane ,and ,ammonia ,are ,simple ,molecules ,found ,in ,Jovian ,planet ,atmospheres.
,They ,consist ,of ,carbon ,and ,nitrogen, ,respectively, ,bonded ,with ,what ,other ,element? ,-
,CORRECT ,ANSWER-Hydrogen
What ,is ,the ,correct ,list ,in ,order ,of ,the ,sun ,with ,the ,Jovian ,planets? ,- ,CORRECT
,ANSWER-Jupiter, ,Saturn. ,Uranus, ,Neptune
Temperatures ,in ,Saturn's ,clouds ,are ,actually ,higher ,than ,what ,we ,would ,expect ,if
,they ,were ,only ,determined ,by ,amount ,of ,absorbed ,sunlight. ,What ,is ,the ,primary
,cause ,of ,this ,temperature ,excess ,in ,the ,clouds? ,- ,CORRECT ,ANSWER-The ,interior
,of ,Saturn ,still ,radiates ,gravitationally-produced ,energy
Imagine ,a ,probe ,descending ,into ,Jupiter's ,atmosphere. ,As ,you ,leave ,the ,bottom ,layer
,of ,the ,atmosphere ,what ,would ,you ,find ,next? ,- ,CORRECT ,ANSWER-An ,ocean ,of
,liquid ,hydrogen
The ,average ,density ,of ,the ,Jovian ,planets ,would ,be ,the ,closest ,density ,of ,what
,familiar ,substance? ,- ,CORRECT ,ANSWER-Water
Jupiter's ,magnetic ,field ,is ,generated ,by ,electric ,currents ,in ,what ,interior ,layer? ,-
,CORRECT ,ANSWER-Metallic ,Hydrogen
A ,large ,moon ,is ,held ,together ,by ,it's ,own ,gravity. ,What ,force ,overwhelms ,this
,gravitational ,binding ,if ,the ,moon ,lies ,within ,the ,Roche ,limit ,of ,its ,planet? ,- ,CORRECT
,ANSWER-Tidal ,forces