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The sky Our place in space Constellations Measurement Celestial Sphere Polaris and precession $200 $200 $200 $200 $200 $200 $400 $400 $400 $400 $400 $400 $600 $600 $600 $600 $600 $600 $800 $800 $800 $800 $800 $800 $1000 $1000 $1000 $1000 $1000 $1000 $200 About 3000 About how many stars are visible on a clear dark night with just your eyes? $400 6 pm If the moon rose tonight at 5 pm, about what time will it rise tomorrow $600 1 hour You have been sitting out watching the star and you notice that the star you are watching has moved about 15 degrees, how long have you been watching? $800 23 hours and 56 minutes If a star is directly overhead tonight, how long will it take for it to be directly overhead again? $1000 In Gemini When the sun rises it is located in the constellation Gemini, what constellation will it set in? $200 23.5 degrees What is the tilt of the earth on its axis? $400 year The time it takes for Earth to complete an orbit around the Sun is called a $600 Universe, Local Group, Milky Way and Solar System Put the following in order from largest to smallest: Milky Way Local group, solar system and Universe $800 We are not in the center of our solar system, which is not in the center of the Milky Way and we are just one of a billion galaxies in the universe. Earth is made of common elements found throughtout the universe. Why is Earth considered ordinary as a planet? $1000 100 million stars The Milky Contains which of the following: 100,00 stars 100 million stars 100 Billion stars $200 constellations Groups of stars making an apparent pattern in the celestial sphere are called $400 Brightest star In general, what is true of the alpha star in a constellation $600 Pisces If your astrological sign is Aries according to tradition, what constellation is the sun actually in on your date of birth? $800 Taurus If the sun rises in the constellation of Taurus which constellation will it set in? $1000 88 Into how many constellations is the celestial sphere divided by the IAU? $200 26,000 Years How long is the Precession cycle $400 Shorter distance Is a star with a large parallax a great distance or short distance from earth $600 Parallax What is inversely proportional to the distance to a star? $800 Light years We measure distances to stars in? $1000 The one with 2.3 arc seconds is closer Which star is closer one with a parallax of 2.3 arc seconds or one with a 1.2 arc seconds? $200 Celestial sphere Astronomical objects are viewed against the background of the _? $400 ecliptic What celestial line is a product of the Earth’s orbit around the Sun? $600 +90 to -90 degrees What is the range of values for declination? $800 0 hours to 23 hours What is the range of values for Right Ascension $1000 1 hour after vernal equinox If a star at vernal equinox rises at 0hr what would a star at 1.0 hour rise? $200 Northstar Of all the visible objects in the sky, which appears to move the least? $400 North Pole Where on Earth would you be if Polaris was at your Zenith $600 Precession The fact that Polaris will not always be the North Star is due to what Earth motion? $800 26,000 years How long is the precession cycle $1000 43 degrees If Seattle is at 43 degrees north Latitude, where is Polaris in the sky?