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

 

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