The photos shown in the picture were taken by the photographer at night with continuous exposure technology. The arc in the photo is the apparent trajectory of the star. Look at the picture and answer

The photos shown in the picture were taken by the photographer at night with continuous exposure technology. The arc in the photo is the apparent trajectory of the star. Look at the picture and answer the questions. Question 1:

Question 1:A

Question 2:B

Question 1: As can be seen from the picture, the apparent trajectory of the star is a concentric circle with Polaris as the center, and Polaris is slightly higher than the horizon, so the photographer's shooting position is in the low latitude area. If you are in the Arctic, the Polaris is located at the zenith, but you can't see it near the South Pole.

Question 2: In the picture, the apparent motion of star A is rotated by an angle of about 50. According to the earth's rotation speed 15/ hour, it is judged that the photographer has been shooting continuously for more than 3 hours.

The location of the test center examines the geographical significance of the earth's movement.