Question 15

A flag mounted on a flag post near the sea coast flutters in the direction of sea. During what time of the day does this happen? (Daytime or Night time)

At night time, the water cools down more slowly than the land. Air near the sea would be warmer than on land. So, the warm air on the sea rises up and the cool wind from the land flows towards the sea. Therefore, at night time, the flag mounted on a post near the sea coast flutters in the direction of the sea.