الطاقة: الطاقة الحرارية- الحمل

The video tutorial explains the concept of heat transfer by convection, which occurs in fluids like liquids and gases but not in solids. It demonstrates this process using an experiment with water and sand, showing how heated water rises and cooler water descends, creating a circular motion. The tutorial also discusses how convection occurs in the atmosphere, where the sun heats the Earth's surface, causing the air above it to warm and rise, while cooler air takes its place.

What new insight or understanding did you gain from this video?