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Fog© Zany
What do you know about fogs? First, what is a fog? According to Earth & Sky, a fog is a cloud that touches the ground. Basically, when warm, moist air travels over cooler land or seas, the temperature of the air mass falls. As the temperature falls, the relative humidity of the air mass increases, causing the condensation of water vapour into water droplets or fog.
1. Precipitation, or frontal fog, forms after a light rain. 2. Advection fog forms when the wind blows moist air over cool ground or warm air passes over a snowpack. This type of fog can also occur when warm winds move from warm water to cold water. 3. Radiation fog forms when warm, moist air passes over cool ground at night. Radiation fog usually forms in the fall. Also see formation of radiation fog. 4. Cloud-base lowering fog forms when a low cloud ceiling falls to the ground. 5. Morning evaporation fog forms when dew evaporates in the morning. 6. Steam fog forms when cold air passes over much warmer water. Heat and moisture are transferred to the cooler, drier air. 7. Upslope fog forms when wind blows air up a slope. Also see upslope fog. 8. Valley fog forms in mountain valleys. Want to make your own fog? Why not? Make your very own fog in a jar. Or, make a portable fog in a bottle. Investigate fog formation. Are fogs useful? You will be surprised. Ever heard of fog harvesting? Fog harvesting has the potential of providing an alternative source of freshwater in otherwise dry regions. Fog collectors are flat, rectangular nets supported by posts at either end. Water collects on the net and falls into a trough at the bottom of the net and flows to a storage cistern. To read about actual projects and see examples of fog collectors, check out FogQuest. Read about fog harvesting in Africa. Go To Page: 1 2
The copyright of the article Fog in Science Websites is owned by Zany. Permission to republish Fog in print or online must be granted by the author in writing.
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