Astronomy 2 Crossword
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
                           
 
 
Down: 2) Mercury, Venus, and Mars. Their physical and chemical properties are similar to Earth's.3) Mercury and Venus5) Jupiter, Saturn, Uranus. Their physical and chemical properties are similar to each other; gaseous 6) Measures the "compactness" of an object computed by dividing the objects mass(kg) by its volume.11) determined by observing its gravitational influence on some nearby object; applies newtons laws of motion and gravity.12) between the orbits of mars and jupiter14) Usually broad, diffused, and gently carved. Once too close to the sun it starts to melt leaving a dusty tail. Across: 1) Are icy w/ some rocky parts4) In a spherical shell surrounding the sun at a distance of about 1000 AU7) Debris left over when a comet breaks up8) Usually straight and made of glowing linear streamers. Its emission spectrum indicates numerous ionized atoms and molecules.9) Have rocky composition; asteroids are bigger10) Earth and Mercury13) Venus and Mars15) In the ecliptic plane, just outside the orbit of neptune16) Earth and Mars17) Only one that has oxygen in atmosphere and liquid water on surface18) Ion tail always points away from the sun
 

 

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