Cloud formation typically comes first before precipitation. Moisture in the air condenses to form clouds as the air rises and cools. Once the clouds become saturated with water droplets or ice crystals, precipitation can occur when the droplets or crystals become heavy enough to fall from the clouds.
Water vapor must be present in the air, along with cooling temperatures or rising air currents, for the vapor to condense and form clouds. Condensation nuclei, such as dust or pollutants, also aid in cloud formation by providing surfaces for water vapor to gather and form droplets.
Clouds form when water vapor in the air condenses into tiny droplets or ice crystals around microscopic particles called condensation nuclei. These particles can be dust, pollen, or pollution. Additionally, cooling of the air and reaching saturation point are needed for cloud formation.
No. Tornadoes form from thunderstorms. By definition a tornado must make contact with both the ground and the cloud base. However, small whirlwinds, such as dust devils, can form on cloudless days. These look somewhat like tornadoes, but are nowhere near as strong.
Light must be present to illuminate the object, the object must reflect or emit light, and the eyes must be able to detect and process the light entering them.
condensationCondensation creates clouds. Clouds develop in an air mass that becomes saturated (relative humidity becomes 100%).Read more http://www.kgbanswers.com/in-what-process-must-occur-for-clouds-to-form/4008725#ixzz1EQ3cx57a
Before clouds can form, air must become saturated with water vapor. This means that the air reaches its dew point, causing the water vapor to condense into tiny water droplets. These droplets then accumulate and form clouds in the sky.
The air must be moist.
water vapour
The Sun
Cool air and dust Particles
Water vapor and heat must be present for clouds to form. The water is evaporated from the ground and collected into a cloud.
Before water vapor falls from clouds as rain, it must first condense into water droplets. This condensation occurs when the water vapor in the air cools and reaches its dew point, at which point it forms visible clouds. Once the water droplets in the clouds combine and grow large enough, they fall to the ground as precipitation in the form of rain.
The flowers must be open and contain ripe pollen.
Water vapour and heat. Wind is not necessarily needed to form clouds.
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