1. Where is the horizon? a. directly overhead, b. along the celestial equator, c. the boundary between land and sky, d. along the path that the Sun follows throughout the day, e. the line running from...

1. Where is the horizon? a. directly overhead, b. along the celestial equator, c. the boundary between land and sky, d. along the path that the Sun follows throughout the day, e. the line running from due north, directly overhead, ending due south.

2. How many constellations are there? a. 2, b. 12, c. 13 d. 56, e. 88.