The tide generating force
The tide generating force is produced by _______. a. rotation of the Earth-Moon coupled system
b. rotation of the Earth-Sun coupled system
c. the gravitational attraction between Earth, the Moon, and the Sun
d. All of the above are correct.
e. Both a and c are correct.
26. Semidiurnal tides have a period of _______.
a. 12 hrs
b. 12 hrs and 25 min
c. 24 hrs
d. 24 hrs and 50 min