2007-10-17 16:43:19 · 18 answers · asked by Buddie 7 in Entertainment & Music ➔ Polls & Surveys
A cloud is defined as 'a visible aggregate of minute droplets of water or particles of ice or a mixture of both floating in the free air'. Each droplet has a diameter of about a hundredth of a millimetre and each cubic metre of air will contain 100 million droplets. Because the droplets are so small, they can remain in liquid form in temperatures of -30 °C. If so, they are called supercooled droplets.
Clouds at higher and extremely cold levels in the atmosphere are composed of ice crystals ≬ these can be about a tenth of a millimetre long.
Clouds form when the invisible water vapour in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapour form, so it starts to condense into a liquid or solid form. There are two ways by which saturation is reached.
(a) By increasing the water content in the air, e.g. through evaporation, to a point where the air can hold no more.
(b) By cooling the air so that it reaches its dew point ≬ this is the temperature at which condensation occurs, and is unable to 'hold' any more water. Figure 1 shows how there is a maximum amount of water vapour the air, at a given temperature, can hold. In general, the warmer the air, the more water vapour it can hold. Therefore, reducing its temperature decreases its ability to hold water vapour so that condensation occurs.
2007-10-18 02:28:10 · answer #1 · answered by http://rainynewz.com 5 · 1⤊ 0⤋
The Cloud Factory
2007-10-17 23:47:31 · answer #2 · answered by crazydoce 3 · 0⤊ 0⤋
Clouds Depot
2007-10-18 00:13:14 · answer #3 · answered by redd headd 7 · 0⤊ 0⤋
cloud city
2007-10-18 10:40:35 · answer #4 · answered by 2bit 7 · 0⤊ 0⤋
Vapors
2007-10-18 09:51:22 · answer #5 · answered by Anonymous · 0⤊ 0⤋
first there is a "mommy" cloud and a "daddy" cloud. And they fall in love....
2007-10-17 23:46:25 · answer #6 · answered by Always Curious 7 · 0⤊ 0⤋
The vapors from the ocean and water.
2007-10-17 23:46:11 · answer #7 · answered by River 4 · 0⤊ 0⤋
Zeus fuming.
2007-10-17 23:49:35 · answer #8 · answered by Anonymous · 0⤊ 0⤋
When they are pink, my Grandpa would say that the angels are baking cookies.
2007-10-18 07:11:34 · answer #9 · answered by ? 7 · 0⤊ 0⤋
i thought they were kept in the big garage in the sky
2007-10-17 23:47:57 · answer #10 · answered by done 4 · 0⤊ 0⤋