Question

The sea breeze is caused due to the low pressure generated over
A) Land
B) Sea
C) Air
D) Both A and B

Answer 1

Hint: The fundamental distinction between the two types of breeze is that water holds heat for a longer period of time. The density of the air above their surface is affected by the temperature differential between land and water. The Breeze is created by the alternating air flow caused by the ensuing low pressure.

Complete answer:
When the air above the ground warms up during the day, the air molecules absorb the heat, the intermolecular interactions between the air molecules weaken, and the kinetic energy of the air molecules increases. The air molecules separate and become less dense, becoming lighter and rising in the process. This generates a low-pressure zone on land, allowing cool sea air to surge from the sea to the land, resulting in a sea breeze.

The movement of winds from huge water bodies such as the sea and ocean is known as the sea breeze; they are also known as onshore winds. These Breezes are more common in the spring and summer, when there is a greater temperature difference between the land and the nearby water bodies. This is especially noticeable in the afternoon when the land reaches its peak temperature.

During the winter season, sea breezes are more reliable than land breezes, which can be ascribed to the large temperature differential between the sea and the land, which can lead to thunderstorms and, in turn, rain. The sea breezes are not as noticeable during the autumn and winter months since there are fewer temperature differences.

Thus the sea breeze is caused due to the low pressure generated over sea. Therefore the correct answer is option ‘B’.

Note: A sea-breeze front, also known as a convergence zone, is a weather front formed by a sea wind. The cold air from the sea collides with the warmer air from the land, forming a shallow cold front. When this front is strong enough, cumulus clouds form, and if the air is humid and unstable, thunderstorms can form.