Why does cold air move to the east over warmer lake water?

Cold air moves to the east over warmer lake water due to the temperature difference between the air and the water. As the cold air passes over the warmer lake, it is heated from below, causing it to rise and create a convection current. This process leads to the movement of air toward the east, often generating localized weather patterns such as lake-effect snow or rain. Additionally, prevailing winds can enhance this eastward movement, further influencing local climate conditions.