Question

1. when does a land breeze typically occur, and why?

a. during the day, because the air over land is cooler and sinks, blowing toward the warmer water.
b. at night, because the air over land is cooler and sinks, blowing toward the warmer water.
c. during the day, because the air over water is cooler and sinks, blowing toward the land.
d. at night, because the air over water is cooler and sinks, blowing toward the land.
what causes a sea breeze to form?
water heats up faster than land, causing

Explanation:

To determine when a land breeze occurs, we analyze the temperature differences between land and water. Land has a lower specific heat capacity than water, so it cools down faster at night. At night, the air over land becomes cooler and denser, causing it to sink. The air over water remains warmer (less dense) and rises. The cooler air from the land (high - pressure area) then blows toward the warmer water (low - pressure area).

• Option A: During the day, land heats up faster than water, so air over land is warmer, not cooler. So A is incorrect.
• Option B: At night, land cools faster, air over land is cooler and sinks, blowing toward warmer water. This matches the land - breeze mechanism.
• Option C: During the day, air over water is cooler (since water heats up slower), but this describes a sea breeze (air from water to land), not a land breeze. And the time (day) is wrong for land breeze. So C is incorrect.
• Option D: The description of air over water being cooler and sinking is wrong for night (water retains heat better, so air over water is warmer at night). Also, the direction (toward land) is for sea breeze. So D is incorrect.

Answer:

B. At night, because the air over land is cooler and sinks, blowing toward the warmer water.