Question

________ and ________ both occur at night. mountain breezes, land breezes land breezes, valley breezes valley breezes, mountain breezes sea breezes, land breezes

Answer 1

Land breezes and mountain breezes both occur at night, resulting from the differences in temperature between the land and sea, and the mountain and valley, respectively.

Step-by-step explanation:

The phenomena that both occur at night are land breezes and mountain breezes. During the day, a sea breeze occurs when the sun heats the land more quickly than the water, causing the air above the land to warm and rise, which pulls the cooler sea air in to replace it. However, at night, the land cools down more rapidly than the water, reversing the direction of the breeze, making it flow from the land toward the sea. This is known as a land breeze. Similarly, mountain breezes occur at night when cooler air from the higher elevations of a mountain moves down to lower elevations.

Answer 2

Land breezes and valley breezes both occur at night due to the rapid cooling of the land in comparison to water and mountain slopes compared to valleys, both creating pressure differences that drive the breezes.

Step-by-step explanation:

Land breezes and valley breezes both occur at night. These breezes are the result of differential heating and cooling rates of the land versus water or the mountain versus the valley. Specifically, water has a higher specific heat capacity than land, meaning it takes longer to heat up during the day and longer to cool down at night. During the day, the land heats up more quickly than the water, causing air over the land to warm and rise, creating a low-pressure area. Cooler, higher-pressure air from the water then moves in to replace it, creating a sea breeze. At night, the opposite occurs. The land cools down more quickly than the water, creating a high-pressure area over the cooler land and a low-pressure area over the warmer water, allowing a land breeze to blow from the land toward the water. Similarly, after sunset, the air over the mountain slopes also cools more quickly, creating a high-pressure area that sends cooler air down into the valley, resulting in a valley breeze.