Hot air rises why

The earth too seems to have stopped warming. My theory: clouds. Robert Buxbaum , May 10, Science requires you check your theory for internal and external weakness. Like this: Like Loading Sorry, your blog cannot share posts by email. Quick Fix: Check the ball valve and expansion cistern for blockages, and bleed the radiator to remove any air that could be causing issues. The Air Filter is Clogged. Leaky Ductwork.

Cause: Dirty or broken air filter. An air filter that has accumulated too much build up or is damaged will slow down air flow in a hurry. Solution: Clean or replace the air filter as necessary. This should be part of routine furnace maintenance in order to ensure efficient operation. Stuffy air typically happens in rooms that are closed off and lacking ventilation.

This floating effect in a less dense medium is called a buoyant force or a displacement force. We can model what I just said with a little physics. Consider the air to be an ideal gas this is a good approximation which neglects the interaction of air molecules with each other. Say you start with an amount of air N at pressure P, volume V 1 , and Temperature T 1 and heat it in a balloon we will neglect the mass and elastic properties of the balloon for simplicity to temperature T 2.

Now the force of gravity on the hot air F g is given by the mass of the hot air times the gravitational constant g 9. Here the mass of the hot air is given by the density of the hot air times the volume of the hot air. This is called a convection current. The main reason that hot air rises is because sinking cold air pushes it up. However, other things like mountain slopes can also cause hot air to rise.

When any substance is hot, its molecules are farther apart than when it is cold, reports History for Kids. This makes hot air less dense than cold air and lighter per cubed square foot. These air currents also create storms, including hurricanes and tornadoes. Hot air rising and colliding with cold air is what creates thunderstorms.