question_stem: Jeff noticed that the big dipper was in a different spot in the sky at 2am than where it was at 10pm. Why?
choices.text: because of the earth's orbit the stars had rotated Jeff had been instantly transported thousands of miles from where he'd been at 10pm. the earth had turned
choices.label: A B C D
fact1: the Earth rotating on its axis causes stars to appear to move across the sky at night