Question

from where on earth could you observe all of the stars during the course of a year?
○ the tropics of cancer and capricorn
○ the equator
○ this is not possible anywhere on earth.
○ the north and south poles
what fraction of the sky can be seen from the north pole?
○ 0%
○ 23.5%
○ 50%
○ 100%

Explanation:

First Question:

At the equator, as Earth rotates, over a year, all stars' paths (due to Earth's orbit and rotation) become visible. The tropics don't see all stars, poles see half (or less) of the sky year - round, and it is possible from the equator.

From the North Pole, due to Earth's axial tilt and rotation, only half the sky (the northern celestial hemisphere) is visible, so 50% of the sky can be seen.

Answer:

the equator

Second Question: