Astronomy Ch 5 Crossword
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
 
 
Down: 1) The hydrogen fusion that continues in a shell around the helium tour once the helium core begins to contract2) The radius of the event horizon3)  Star that just started it’s time on the main sequence 6) The single point that gravity crashes all matter into7) Fusion of hydrogen into helium in the core of a star10)  Curved space-time alters the paths of light rays, shifting the apparent positions of objects 11) As more and more matter is added to the protostar, it shrinks due to ever-increasing gravity; Collapse of an object due to gravity14) Time it takes a protostar to become a zero age main sequence star15) Hydrogen at the center of a star is converted into helium; For hydrogen nuclei are fused into one lighter helium nucleus and the disappearing mass is changed into energy and released16)  Waves emitted in the fabric of spacetime that can be detected on earth; happens when black holes collide 17)  Model that describes the universe as created fully formed in the recent past; rests on the appearance of age hypothesis 19)  The gas and dust ejected in the massive explosion of a supernova 20) When helium fusion begins in a red giant diffusion rate skyrockets before a new equilibrium is reached25)  Very dense start remnant composed entirely of neutrons; the ball of neutrons left behind by a massive star supernova 26) Spinning neutron star that emits intense radio waves while rotating Across: 4) High core temperatures allow helium to fuse with heavier elements5)  The multi layered shell process consisting of the hot and dense inner carbon core and its shell of helium, then the massive helium layer surrounded by a shell of hydrogen 8) Process by which the material falls onto another body9)  A supernova that occurs when a massive star dies, initiated by the catastrophic collapse of its iron core; most of the star explodes and leaves behind a neutron star or a black hole; Massive Star supernova12)  Star remnant so dense its gravitational pull prevents anything from escaping from it, including light 13) Gigantic stellar explosion18) Disc of matter that forms a round of forming star21) A description of the changes that take place in stars as they age22) Stellar remnant of a dying star23) The spherical surface of a black hole where the escape velocity equals the speed of light 24)  When the outward force due to fusion cancels out the downward force due to gravity, the star is in balance 27) Star with a mass less than about two solar masses28) Advanced nuclear burning through a series of nested shells 29) An explosion that occurs when hydrogen fuses at the surface of an accreting white dwarf.30) A star in its earliest observable phase of evolution31) The matter and radiation existing between star systems in a galaxy, clumped in the clouds giving birth to stars32) The path of a star follows on the HR diagram according to theoretical models33) Cloud of ionized gas leaving the core of a dying star34)  A supernova that occurs when an accreting white dwarf reaches the white dwarf limit and ignites runaway carbon fusion; white dwarf supernova
 

 

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