Which one of the following force intervenes and causes the water to move to the right in the northern hemisphere and to the left in the southern hemisphere ?

The distance between the earth and the moon is minimum when the moon is in

Which tides are caused when the moon and the sun pull the earth gravitationally in opposite directions ?

Which are influenced by two types of forces namely primary forces and secondary forces ?

Tides having variations in height are known as 

Which one of the following occur due to the gravitational pull of the sun and the moon ?

The earth reaches its perihelion in

When the earth is farthest from the sun is called

Upward and downward movement of ocean water is known as the 

Ocean currents are influenced to a great extent by