Use the following interactive explorers to hypothesize what these 20 vocabulary words mean.

If you need help finding a particular word, use this.
Coordinate Systems Comparison
Rotating Sky Explorer
Azimuth/Altitude Demonstrator
Altitude/Azimuth Explorer
Sky Map Explorer
Celestial-Equatorial (RA/Dec) Demonstrator
Right Ascension/Declination Explorer
Longitude/Latitude Demonstrator
Latitude/Longitude Demonstrator
Flat Sky Map