air bubbles can slow the penetration of heat because they serve as barriers and protect the object inside. this slows the advance of hot air and prevents from it reaching or penetrating into the object that is being covered by the air bubbles
Soap bubbles typically last longer in cool or cold air compared to warm air. This is because cooler air is denser and can help slow down the evaporation rate of the water in the bubble mixture, allowing the bubble to stay intact for a longer period of time.
hot air rises cold air sinks
Aero hot chocolate is made using a process called aerating, where tiny air bubbles are incorporated into the chocolate mixture. This is typically achieved by rapidly mixing the hot chocolate with a high-speed whisk or by pumping air into the mixture under pressure. The air bubbles give the hot chocolate a light and airy texture, creating a smooth and creamy mouthfeel.
At the volcanoes and geysers, mud boils and bubbles and shoots in to the air. There are also hot springs near the geysers.
Slow
As the earth is heated by the sun, bubbles of air rise upward from the warm surface.
Air molecules move faster in hot weather and slower in cold weather.
When water is heated it releases gas. The gas comes out in a bubble form.
What they do is blast cold air into the "hot" air and it makes the air molecules slow down... Thus it makes the air balloon decrease back to earth.
Hot air is less dense so there are less interactions to slow the transmission, and less 'inertia' of particles.
Let it settle. You maybe fooled about the bubbles if your are checking it while the fluid is hot. At rest with the engine cooled down, there wouldn't be any bubbles. Check the coolant level when engine is cooled off and not running.
By the use of good quality automatic air eliminators So Vent removes micro bubbles