Of the following statements about the tides, which is/are true?
There are two tidal bulges on Earth caused by the Moon: one facing the Moon, and the other facing away from the Moon.
Although we observe the tides coming in and going out, in reality Earth is rotating into and out of various tidal bulges, which produces changing tides.
Both Earth and the Moon orbit around their common center of mass, called the barycenter.
The tides are caused by an imbalance between the centripetal force and the gravitational force of the Moon and the Sun.