Astronomy ch.14 Crossword
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
                                   
 
 
Down: 1) a telescope that uses a curved mirror to gather and focus light frim distant objects3) a telescope thar uses a set of lenses to gather and focus light from distant objects4) time reqiured for the earth to orbit once around the sun5) the earth is the center at the universe7) an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation8) the most common type of telescope11) detect radio waves13) showed that all objects in the universe attract each othe through gravitational force16) study of the universe19) the time required for earth to rotate once on its axis20) the line where the sky and the earth appear to meet Across: 2) annouceed that all of the planets revolve around the sun in elliptical orbits and that the sun is not in the exact center of the universe6) the angle between an object in the sky and the horizon9) a region of sky that contains a recognizable star pattern and that is used to describethe location of objects in space10) the distance that light travekls in one year; about 9.46 trillion kilometers12) the point in the sky directly above the observer on earth14) one of the first people to use a telescope to observe obujects in space15) all of the frequencies or wavelenghts of electromagnetic radiation17) proved that other galaxies existed beyond the edge of the Milky Way 18) used large tools to make the most detailed astronomical observations21) the sun is at the center of the universe22) a division of the year that is based on the orbit of the moon around earth
 

 

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