2. To use and understand celestial co-ordinates. To explain why Polaris remains fixed in the sky at an elevation equal to latitude

3.  In astronomy, a celestial coordinate system is a system for specifying positions of celestial objects: satellites, planets,  http://www.youtube.c om/watch?v=1Toya19H 12wstars, galaxies, etc. To use and understand celestial co-ordinates

4.  Right Ascension is the equivalent of longitude in space. http://www.youtube.com/watch?v=iGgOS fYTxFA

5.  Declination means the latitude of a star in the sky measured from the Celestial Equator which is an extension of our own Equator

6.  One of the two points on the Celestial Sphere where the Ecliptic and the Celestial Equator cross one another. The First Point of Aries, which is actually in Pisces, defines the zero- point for Right Ascension

8.  Right Ascension  How far an object is along the celestial equator from the first point of Aries (the 0 point for right ascension).  Declination  How far north and south an object is from the Celestial Equator

9.  http://cse.ssl.berkeley.edu/segwayed/lessons/findplanets/coord inates.html# http://cse.ssl.berkeley.edu/segwayed/lessons/findplanets/coord inates.html#  http://www.glyphweb.com/esky/concepts/firstpointofaries.html Use the above website to create a glossary for the following terms:- Declination Right Ascension Celestial Sphere Celestial North Pole Celestial South pole Celestial Equator Latitude Azimuth Longitude

10.  You may hear these terms. From any location, we can measure how high in the sky an object is (altitude) in degrees from 0 (horizon) to 90 (zenith). We can also measure its direction from north (0 to 359°). The problem with this is that a star's position changes all the time and from location to location. For this reason we use Right Ascension and Declination.

11.  Polaris is located at very close to 90 degrees in the sky. This is the Northern Celestial Pole. If you stood at the North Pole and looked up, it would be directly above your head. Because of this we can find our latitude in the Northern Hemisphere by measuring the angle of Polaris in the sky.  Polaris is doubly useful as it appears fixed in the sky and other stars seem to rotate around it. It always points north.  If you were slightly north of the Equator you may be able to see Polaris on the horizon looking north.  From London you can see Polaris at approx 51 degrees north. To explain why Polaris remains fixed in the sky at an elevation equal to latitude

13.  Read through the task sheet information then attempt the questions on the following pages. This is DIFFFICULT, if you are struggling please let me know.

14.  State how you have met the below objectives To use and understand celestial co-ordinates. To explain why Polaris remains fixed in the sky at an elevation equal to latitude