Rain and other forms of precipitation fall from the clouds. When warm air passes over a body of water, it causes the water to evaporate. Once the water rises high enough, it clumps with other water vapor and becomes a cloud. The air cannot hold an infinite quantity of water, so when the amount of water present in the cloud exceeds the air’s ability to hold it, the water falls in droplets as rain.Know More
On earth, water flows in a constant cycle and none is ever truly lost. The water that falls out of the clouds as rain and strikes the earth flows downhill until it reaches an ocean or lake. Warm air moving over the water will absorb the water, carrying it high into the atmosphere. Because some forms of pollution bond with water, the pollutants can end up in the clouds where it will eventually rain down as polluted water. This can exacerbate the problem of pollution as the rain spreads it to a large area.
Not all clouds are the same, and some types are more likely to produce rain than others. Usually, clouds that produce rain have the term “nimbus” in their name, such as cumulonimbus clouds, which produce thunderstorms.Learn more about Rain
Precipitation forms when condensation inside clouds occurs at the level that the droplets become heavy enough to fall down to the Earth's surface. Rain, hail, freezing rain, snow and sleet are all types of precipitation that result from different conditions in the atmosphere.Full Answer >
To make acid rain for a science project, use vinegar or vinegar dissolved in water. Change the concentration of vinegar in the solution to imitate more or less acidic rain.Full Answer >
According to About.com, there are many causes for drought, but the most important one "relates to the amount of water vapor in the atmosphere, as this is what creates precipitation." Moist, low pressure systems tend to bring more rain, snow, sleet and hail, while dry high pressure systems lead to a lack of precipitation.Full Answer >
The Pacific Ocean receives an average of roughly 50 inches of rain per year. The Pacific Ocean is the largest of Earth's oceans, spanning across nearly half of the world's open water sources, or about 28 percent of the surface of Earth.Full Answer >