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qu.1.1.name=Terrestial Coordinate System@
qu.1.1.question=Universal coordinate systems are very useful in that they give a basis for mapping positions on the Earth and in the sky.  On Earth, longitude (&lambda;) represents east-west positions.  Starting at the <1> with 0&deg;, longitude increases east and west to 180&deg;.  Latitude (&omega;) describes north-south positions beginning at the <2> with 0&deg; and increasing in both directions, reaching the poles at 90&deg; North or South.<br><br>
<h4>Important Parallels of Latitude</h4>
<H5>(fill in the table below)</h5>
<table width="300" border="2">
<tr>
<td><big>Tropic of Capricorn</big></td>
<td align="center"><3></td>
</tr>
<tr>
<td><big>Tropic of Cancer</big></td>
<td align="center"><4></td>
</tr>
<tr>
<td><big>Antartic Circle</big></td>
<td align="center"><5></td>
</tr>
<tr>
<td><big>Arctic Circle</big></td>
<td align="center"><6></td>
</tr>@

qu.1.1.blank.1=Prime Meridian, International Date Line, Equator, Vernal Equinox@
qu.1.1.blank.2=Equator, Vernal Equinox, International Date Line, Prime Meridian@
qu.1.1.blank.3=23.5 degrees S, 23.5 degrees N, 66.5 degrees N, 66.5 degrees S@
qu.1.1.blank.4=23.5 degrees N, 23.5 degrees S, 66.5 degrees N, 66.5 degrees S@
qu.1.1.blank.5=66.5 degrees S, 23.5 degrees N, 23.5 degrees S, 66.5 degrees N@
qu.1.1.blank.6=66.5 degrees N, 23.5 degrees N, 23.5 degrees S, 66.5 degrees S@

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qu.1.2.name=Celestial Coordinate System@
qu.1.2.question=Celestial equatorial coordinates are a lot like the terrestrial coordinates.  They are mapped on the Celestial Sphere, which is an infinite sphere surrounding the entire <1> with its center at the center of the Earth.  The Celestial Sphere has poles directly opposite the north and south poles of the Earth and the Celestial Equator is an extension of the Earth’s equator.
<br><BR>The stars appear to rise in the <2> and set in the <3> , making circular trails in the sky around the poles.  One complete circle takes <4> .  Polaris is very close to a celestial pole -- it is within <5> of the North Celestial Pole.  Therefore it’s altitude will give us our <6> .
<br><br>
Celestial Coordinates are measured in Right Ascension and Declination.  Right Ascension indicates east-west positions beginning at 0 hours at the <7> and increasing eastward to 24 hours.  Declination indicates north-south positions starting at 0&deg; on the Celestial Equator and having a value of +90&deg; at the NCP and -90&deg; at the SCP.  These values for Right Ascension and Declination give astronomers a grid to map the locations of stars and planets.  Yet these coordinates periodically need to be updated due to the <8> of the Earth.@

qu.1.2.blank.1=universe, Earth, Milky Way, blanket of stars@
qu.1.2.blank.2=east, west, north, south@
qu.1.2.blank.3=west, north, south, east@
qu.1.2.blank.4=24 hours, a solstice, 365 days, about 28 days@
qu.1.2.blank.5=1 degree, 5 degree, 0.5 degree, 3 degree@
qu.1.2.blank.6=latitude, longitude, right ascension, declination@
qu.1.2.blank.7=Vernal Equinox, Prime Meridian, International Date Line, Equator@
qu.1.2.blank.8=precession, apparent movement, rotation, season change@

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