Question

For an observer at latitude 40º N or higher, which constellations are north circumpolar?

a. All of the above.
b. Draco.
c. Ursa Major and Ursa Minor.
d. Cassiopeia and Cepheus.

Answer 1

For an observer at latitude 40º N, the north circumpolar constellations include Draco, Ursa Major and Ursa Minor, and Cassiopeia and Cepheus; hence, the correct answer is 'All of the above'.

Step-by-step explanation:

For an observer at latitude 40º N or higher, the constellations that are north circumpolar are Draco, Ursa Major and Ursa Minor, and Cassiopeia and Cepheus. These constellations never set below the horizon and can be seen all year round from these latitudes. The North Celestial Pole is aligned with the observer's latitude, so stars within 40º of the North Celestial Pole, such as those in the mentioned constellations, will always be visible above the horizon.

The correct answer to the question is therefore 'All of the above'.