Assertion (A): Tidal range is not constant.

Reason (R): Tidal range varies due to the earth's rotation on its axis.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

Which of the following statements are true?

(A) The alternate advance and retreat of seawater along a coast is called tide.

(B) When water advances to its fullest extent on to the shore it is called high tide.

(C) When water recedes to its fullest extent from the shore it is called low tide.

(D) Some freshwater rivers and lakes can have tides too.

1. (A) (B) (C) (D)
2. Only (A)
3. Only (B) and (C)
4. (A) (B) and (C)

Which amongst the following is NOT one of the causes of Ocean Currents?

1. Level of Salinity
2. Temperature
3. The Earth's Revolution
4. Planetary Winds

The water from the Atlantic ocean flows over the Mediterranean sea because

1. The latter is more saline.
2. The latter is warmer.
3. of the direction of westerlies.
4. of the earth's rotation.