Astronomy Crossword
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
                                                 
 
 
Down: 1) Geocentric. I was a Greek philosopher and thought the earth wasn't moving.2) Gravity causes solar nebula to collapse toward dense, hot, rotating protostellar disk. (which step?)3) Heliocentric. I was a Danish astronomer. I measured the motion of planets.5) Comets can be found here.7) Heliocentric. I was a Polish astronomer. I am responsible for the order of the planets today.8) Planets form. (which step?)10) Planetary orbits are ellipses with the sun at one focus.12) Located beyond Neptune and contains small bodies of ice.13) Heliocentric and elliptical. I was a German mathematician and astronomer. I am responsible for the 3 laws of planetary motion.17) Distance of a planet from the sun to the time it takes to revolve is related.22) What is NH3?24) What is the density of water?25) On which planet is a day longer than a year? Across: 4) As the distance between 2 objects increases, the force of gravity _________.6) The pull of gravity on atoms, planets, and stars makes everything ________.9) Geocentric. I was a Greek-Roman astronomer, geographer, and mathematician. 11) When looking at 3 different stars, which one would have the greatest parallax?12) Located beyond Neptune and contains small bodies of ice.14) What is CH4?15) I was a Greek astronomer and mathematician. I proposed heIiocentric but it was not accepted. I solved the parallax problem.16) Because it is made up of gases and it is not a solid, the sun has __________________.18) Sun forms in center. (which step?)19) Planets move faster when closer to the sun.20) Located between Mars and Jupiter.21) What 2 planets have retrograde rotation?23) Planetismials form (small body from which a planet originated. (which step?)26) Heliocentric. I was an Italian mathematician, physicist, and astronomer. I used the scientific method.
 

 

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