Astronomy Crossword
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
                                              
 
 
Down: 2) Illuminated by hot stars (spectral class O or B), excited by UV photons and glow with lines of Hydrogen. (like a black light poster)3) A small but relatively dense cloud often visible in nebulous regions created by a region imploding5) Upper limit of the mass supported by electron degeneracy pressure; approx. 1.4 solar masses 9) At 100 Million K, a new fusion source ignites. Massive outpouring of heat causes the whole core to react more quickly, and the resulting flood of energy changes the structure of the star profoundly.10) Core's physical characteristics change. No longer behaves like a gas. Superconductor of heat sitting at the same temp (isotropic) and cannot cool self down. Stars luminosity climbs11) A failed star that is not massive enough to cause Hydrogen fusion in its core. (A dense, hot planet) Mass is <.08 solar masses but greater than 2 Jupiters12) Initiated by some form of compression by an external agent13) White dwarf is a rare heavy one, 1.3 solar masses. Mass exceeds Chandrasekhar limit before Nova happens. Star begins to collapse inwards, driving density and temp violently upwards. All carbon and helium fuses at once in a very intense explosion. There is nothing left except a rapidly expanding cloud of superheated gas.14) Stream of charged particles emitted by the sun that flows at high speeds through interplanetary space.15) Companion swells, exceeds the pairs "Roche Lobe" and matter (Hydrogen) pours down onto the surface of the binary white dwarf, which causes the temp to rise until the hydrogen explodes in a nova16) Force field that is able to exert a force on a moving electric charge. Requires a Very large mass of Electrically conducting fluid in Motion18) Gas gets thinner but hotter from magnetic reactions. Extremely hot. Region seen during solar eclipse as whitish streamers heading out in all directions.19) Those present all the time22) End stage of small to mid size stellar evolution. Extremely small (earth sized), extremely hot (>100,000 Kelvin) and extremely dense. (1-ton per cubic centimeter). Extremely low luminosity. Super long lifespan! Across: 1) Apparent surface of the sun seen in visible light. Region where density drops enough for gas to become transparent, thus allowing it to radiate its energy 'off to space'4) Contracting, spinning disk of gas and dust with an increasing infrared source at its center. A young, undeveloped star that gets its energy from grav. energy converting to thermal energy6) Thinning gas begins to be heated by magnetic effects, so temp starts to increase7) If cloud is seen as a darker mass silhouetted against an illuminated background8) Lower temps allow electrons to bind with protons to form atoms again. Electrons good at catching photons, so opacity greatly increases, and thermal transfer has to happen through _________17) Illuminated by cooler stars (spectral class A-M) the gas shines with reflected starlight20) Strong magnetic field and H-H object, IR emission. As a star contracts further, the rapid spinning leads to an intense magnetic field, which in turn creates bipolar jets which flare outwards, creating H-H objects. Disperses enough material around it to be seen in visible light (found on top of main sequence)21) Release bursts of high energy particles, electrons, and x-rays into space. 23) An energy releasing nuclear reaction chain which is important in low mass stars (p-p chain)24) Pressure at any point within the sun must be just enough to hold up the weight of all the layers above that point25) Bringing up carbon from the core and polluting the outer envelope of the star. This prevents the carbon from piling down the core, compressing and heating it up so higher order fusion reactions are unable to start. The carbon in the outer envelope acts like a blanket, and heats the stars outer regions allowing them to escape from the bloated stars weakened surface gravity. Star boils over into space26) Region within the sun where opacity is low and radiative transfer carries energy produced in the core outward in the sun. Protons repeatedly absorbed and remitted (drunken walk)27) Regions where the magnetic field is pushing material up out of the photosphere28) Those that come and go with the magnetic field
 

 

Create your own Crossword Puzzle for Free!		  Show Errors as I Type