Question

4
multiple choice 1 point
the zero value for altitude is measured at
○ the horizon
○ the zenith
○ the nadir
○ north

5
multiple choice 1 point
one of my favorite places to look at stars is mt. laguna in san diego. the latitude of mt. laguna is 32.8°n. where is the north celestial pole as seen from mt laguna?
○ altitude 0°
○ altitude 90°
○ altitude 32.8°
○ altitude 57.2° (= 90° - 32.8°)

6
multiple choice 1 point

Explanation:

Question 4

Altitude in astronomy is the angle above the horizon. So the zero value for altitude is measured at the horizon. The zenith is at 90° altitude, nadir at - 90°, and north is a direction, not related to altitude zero measurement.

The altitude of the North Celestial Pole (NCP) as seen from a location on Earth is equal to the latitude of that location. Given Mt. Laguna has a latitude of 32.8°N, the altitude of NCP from there is 32.8°.

Answer:

A. The Horizon

Question 5