Q. What is the cause of tidal waves?
A. wind
B. gravitational force of the moon on the sea
C. gravitational force of the sun on the sea
D. gravitational force of the earth on the sea
Answer: gravitational force of the moon on the sea
A. wind
B. gravitational force of the moon on the sea
C. gravitational force of the sun on the sea
D. gravitational force of the earth on the sea
Answer: gravitational force of the moon on the sea