Question

problem 10 from a city in the u.s., where in the sky would you look to see a star that is not turning with the motion of the sky in the course of a night? options: you cant fool me, all stars appear to turn around the sky from locations in the u.s.; on the celestial equator; at your zenith; at the north celestial pole; on your horizon

Explanation:

In the Northern Hemisphere (where most U.S. cities are located), the north celestial pole is near Polaris. Stars appear to rotate around the north celestial pole due to Earth's rotation. A star at the north celestial pole will have almost no apparent motion (or very little) as the sky rotates, while other stars (on celestial equator, zenith, horizon) will show circular motion. The option "You can't fool me..." is incorrect because the north celestial pole - near star (Polaris) - doesn't turn with the sky's general motion. Wait, no, correction: The north celestial pole is the point around which stars appear to rotate. So a star at the north celestial pole (like Polaris, which is close) will have minimal apparent motion. So the correct option is "At the north celestial pole". The initial selected option is wrong. Let's analyze each:

• "You can't fool me...": Incorrect, because Polaris (near north celestial pole) doesn't turn much.
• "On the celestial equator": Stars here have the most circular motion, rising and setting, so they turn.
• "At your zenith": A star at zenith will still move in a circle (due to Earth's rotation), so it turns.
• "At the north celestial pole": Stars near here (like Polaris) have very little apparent motion, so they don't turn with the sky's general motion.
• "On your horizon": Stars here will rise/set or move, so they turn.

So the correct option is the one about the north celestial pole.

Answer:

D. At the north celestial pole