As hot air from the earth’s surface rises, it soon becomes cold air as it nears space, according to Historyforkids.org. As hot air cools it sinks back to the surface of the earth, where it gets warmed by the ocean only to rise again. This is called a convection current.

The North Equatorial Current (NEC) is a westward wind-driven current mostly located near the equator, but the location varies from different oceans. The NEC in the Pacific and the Atlantic is about 5°-20°N, while the NEC in the Indian Ocean is very close to the equator.

Pilots often take advantage of the JET STREAMS, which are high-speed winds. Jet Streams are high-speed winds which are between 7km and 16km above the Earth’s surface.

The edge between the two is called a front. Each different kind of front causes a different kind of weather. A cold front is when a cold air mass pushes into a warm air mass. The heavier cold air sinks and slides in under the warm air. The cold air forces the warm air steeply upward along the front.

Cold air flows downward according to hot air because it is more dense and sinks while hot air rises. In hot room the air will be much thinner thus reducing the pressure so the air flows from cold room to hot rooms. Cold air sucks out the energy of hot air!

When the window is opened the upper part is under higher pressure from the heated air and this pushes the air out. The release of air at high level lower the pressure of the room at low level which draws some air in to restore the balance.

Not only can keeping openings closed cause condensation issues inside your house (i.e. weeping windows), which we know can lead to mould, it also allows toxins already inside the home to build up. That includes volatile organic compounds, mold spores, dust, smoke, radon, viruses and bacteria.

Why You Should Open A Window (Especially When It’s Cold Outside) Keeping windows closed during winter months may provide warmth and save on household energy use, but it also traps in pollutants. The simple act of opening a window—even in cold weather—can reduce this pollution.

Staying home with only members of your household is the best way to keep SARS-CoV-2 (the virus that causes COVID-19) particles out of your home. However, if a visitor needs to be in your home, improving ventilation (air flow) can help prevent virus particles from accumulating in the air in your home.

15 minutes is enough to air the house properly That’s it. With this method, only the indoor air will be cooled. It will take just a few minutes to heat the room again. Leaving a tilt-and-turn window ajar all day, however, is not effective: it cools the walls and it costs much more to heat the room back up again.

By opening the windows wide, we help the air exchange occur faster and prevent excessive cooling. In the winter months, about 5 minutes is enough to provide our rooms with the right amount of fresh air.

Open your windows and doors. A new study from the Eindhoven University of Technology in the Netherlands suggests those simple steps prior to going to bed can reduce carbon dioxide levels and improve sleep quality. The study found that opening windows and doors improved ventilation and airflow in bedrooms.