This happens often along coastlines, for example, when warm ocean breezes blow in over cooler land. If the temperature of the air sinks below its dew point, water vapor will condense around dust in the air to form fog.Īdvection fog occurs when warm air moves in over a cooler land surface. Radiation fog occurs when the ground radiates heat outward while the air above the ground begins to cool after the sun sets. As the air heats up again, fog will slowly disappear as the tiny water droplets once again return to a gas in the form of water vapor. We see those groups of tiny droplets as clouds or, when they're close to the ground, as fog. When this happens, water vapor in the air - a gas - is cooled enough for the gas to turn to a liquid in the form of tiny water droplets. When they do, we get fog.īasically, fog forms when warm air meets colder air. The same scientific processes that usually happen way up high in the atmosphere to create clouds can take place closer to the ground. So how does fog get down here close to Earth? Does a strong wind blow a cloud out of the sky down to the surface of the Earth? Not quite…įog actually forms close to the Earth where we see it. The next time you wake up in the morning to dense fog, you can say “It's cloudy outside!" instead of “It's foggy outside!" Why? Because fog is just a regular cloud that happens to be close to the ground rather than high up in the air. Where does fog come from? Would you believe us if we told you we don't have the foggiest idea? Probably not… we're in Wonderopolis, after all!
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |