Õhumolekule

Õhumolekule refers to the individual particles that make up the Earth's atmosphere. These are primarily molecules, with gases like nitrogen (N2) and oxygen (O2) being the most abundant. Nitrogen constitutes approximately 78% of dry air, while oxygen makes up about 21%. Other significant components include argon (Ar), carbon dioxide (CO2), and trace amounts of other gases such as neon, helium, krypton, hydrogen, and methane. Water vapor (H2O) is also a crucial component of the atmosphere, though its concentration varies significantly with location and altitude.

These õhumolekule are in constant random motion, colliding with each other and with any surfaces they encounter. This kinetic energy is what we perceive as temperature. The density and pressure of the atmosphere are a direct result of the number and movement of these õhumolekule. Higher concentrations of molecules lead to higher pressure. Atmospheric phenomena like wind are caused by the movement of large masses of these õhumolekule from areas of high pressure to areas of low pressure, driven by temperature differences. The composition of õhumolekule is essential for life on Earth, providing the oxygen necessary for respiration and the carbon dioxide required for photosynthesis.