Rain

A:

Rain is the result of water droplets gathering together in clouds and gravity causing the water droplets to fall as rain. Warm air has more water droplets than cold air.

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  • What is the tropical wet climate zone?

    Q: What is the tropical wet climate zone?

    A: The tropical wet climate is a category of the tropical moist global climate. All of the global tropical climate zones are found 15 to 25 degrees north and south of the equator.
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  • Where does rain come from?

    Q: Where does rain come from?

    A: 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.
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  • What is the average rainfall in the Amazon rainforest?

    Q: What is the average rainfall in the Amazon rainforest?

    A: The average rainfall in the Amazon rainforest is about 108 inches per year. The high amount of rain combined with a warm year-round climate makes the Amazon rainforest the most biodiverse place on Earth.
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  • What is the rainiest city in the USA?

    Q: What is the rainiest city in the USA?

    A: The rainiest city in the United States is Mobile, Alabama, according to a 2007 article on LiveScience. The city averages 67 inches of rain annually and experiences approximately 59 rainy days per year.
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  • What is the average yearly rainfall in a rain forest?

    Q: What is the average yearly rainfall in a rain forest?

    A: In a typical year, a tropical rain forest gets an average of 50 to 260 inches of rain. This helps the climate stay very hot and humid.
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  • How does elevation affect precipitation?

    Q: How does elevation affect precipitation?

    A: Areas of high elevation, such as mountain ranges, often drain the air of its moisture. As the air rises up the mountain, it cools. As the air cools, it loses its ability to hold water. The water then condenses out of the air and falls as precipitation.
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  • How do droughts form?

    Q: How do droughts form?

    A: Put simply, droughts are caused by a prolonged depletion of precipitation in a certain ecosystem or climate over a long period of time. Unlike normal dry spells, droughts are so severe that they can thoroughly dry out vast expanses of land, like deserts. Droughts can be extraordinarily damaging and expensive to the people who live in the environments where they occur, especially in terms of the agricultural industry.
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  • How is rain formed?

    Q: How is rain formed?

    A: Rain is the result of water droplets gathering together in clouds and gravity causing the water droplets to fall as rain. Warm air has more water droplets than cold air.
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  • What is rainfall?

    Q: What is rainfall?

    A: Rainfall is the result of water vapor condensing and precipitating, forming droplets that fall from clouds due to gravity. It is an important part of the water cycle.
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  • Where does it rain the most in the United States?

    Q: Where does it rain the most in the United States?

    A: According to the Weather Channel, Mount Waialeale on the Hawaiian island of Kauai receives about 450 inches of annual rainfall, making it the rainiest part of the country and one of the rainiest in the world. In the Hawaiian language, the name literally means "rippling water."
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  • What causes rain?

    Q: What causes rain?

    A: Any time the droplets in clouds grow and come together to form drops that are large enough to create a speed of falling that is greater than the speed at which the cloud is blowing upward, then they head downward, and if they make it down without evaporating, people on the ground experience them as rain or snow. Sometimes rain evaporates again and heads back up into the clouds. The greater the amount of water vapor under the cloud and the stronger the winds on the updraft, the more likely precipitation becomes.
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  • What are some examples of condensation?

    Q: What are some examples of condensation?

    A: Some examples of condensation include the water that gathers on a bathroom mirror after a hot shower and the water that collects on grass as dew. Condensation is the process where gas molecules slow down and come together to form a liquid.
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  • Why is the water cycle important to life on earth?

    Q: Why is the water cycle important to life on earth?

    A: The water cycle is responsible for distributing water across the earth through evaporation, condensation and precipitation, a process that is vital for sustaining life on earth by providing water to plants, animals and humans. It is also the driving force behind the earth's climate. Clouds are formed through condensation, and temperature is regulated through evaporation and water vapor in the air.
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  • What is convectional rainfall?

    Q: What is convectional rainfall?

    A: Convectional rainfall occurs when the warm air deflected from a landform rises and forms rain clouds. Convectional rainfall is very common in tropical areas as well as areas in southeastern England.
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  • What causes rain to fall?

    Q: What causes rain to fall?

    A: Rain falls when atmospheric water vapor falls under gravity. In other words, when the water vapor in the atmosphere becomes too heavy, rain falls.
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  • What goes up when the rain comes down?

    Q: What goes up when the rain comes down?

    A: An umbrella goes up when rain comes down. To solve this riddle, the person being questioned has to think about items that rise when rain is falling, aside from natural elements.
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  • Q: What is the average tundra rainfall?

    A: The tundra sees an average of 6 to 10 inches of rainfall each year. This number includes the melting snow in the tundra.
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  • Q: Where can you find historical rainfall amounts?

    A: The National Oceanic and Atmospheric Administration provides records of past weather and climate data through Climate Data Online, available on the NOAA website. The AccuWeather Premium website also provides daily rainfall and snowfall totals as far back as 1992.
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  • What is relief rain?

    Q: What is relief rain?

    A: Relief rain occurs when warm, moist air ascends along the slope of a mountain. The air then condenses and rainfall occurs on the windward side. The leeward side of the mountain receives very little rainfall. This is called the rain shadow region.
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  • Q: What causes heavy rain?

    A: Rain occurs when the water held in warm, damp air condenses and falls. The primary difference between light rain and heavy rain is the amount of moisture that is present in the air mass, which is proportional to the size of the air mass. Typically, heavy rains are caused by pressure fronts, while lighter rains are caused by convective processes.
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  • Q: How do droughts occur?

    A: 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.
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