Answer to Question 1
Land and sea breezes are caused by the differential heating of water and land. During the day, the land heats up much faster than the water, creating a relatively low pressure area. As a result, winds blow from the higher pressure area over the water to the land. During the night, land cools off quicker than water, forming a high pressure area over land. As a result, air moves from land to water. Similarly, during the day, valley slopes heat faster than the valley floor. As a result, air moves from the high pressure valley floor to the lower pressure valley slopes. At night, the slopes cool quicker, forming a high pressure zone. As a result, air moves from the slopes to the valley floor.
Answer to Question 2
TRUE