On a sunny day at the beach, the land heats up faster than the ocean. the warmer air over the land rises, so the cooler air over the ocean rushes in to take its place. this creates wind called a sea breeze. after sunset, the land cools faster than the water, so the air over the ocean is warmer. describe what you think happens to the movement of air and the directions of the wind.

As opposed to what is mentioned as the sea breeze, what was being asked to describe is what is known to be as land breeze. If the sea breeze is a wind that comes from the sea to the land, then the land breeze is the wind that comes from the land going to the sea. The same concept applies. What happens is that when the warmer air over the ocean rises and the cooler air over land rushes in to replace the warmer air, the movement of the air comes at still and creates the breeze. The directions of the wind would also go towards the sea.

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction