Rain

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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  • 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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  • 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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  • 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 causes the smell after rain?

    Q: What causes the smell after rain?

    A: The smell of rain is unmistakable, and there are many factors that make up its sweet, earthy scent. It comes mostly from rainwater falling on dried materials, bacteria, or algae on the ground. There is also evidence that some people can smell the rain not only after it’s gone but before it comes.
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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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  • 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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  • 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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  • 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?

    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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  • 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 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 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 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 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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  • 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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  • Q: How does precipitation form?

    A: 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.
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  • Where can you find local daily rainfall totals?

    Q: Where can you find local daily rainfall totals?

    A: Weather.gov posts local daily rainfall totals. For information about daily rainfall totals in your local area, enter your city and state or ZIP code in the search bar. Then, navigate to the link for 3-Day History to view your local precipitation information
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  • Q: How does rain happen?

    A: Rain occurs through the process of coalescence, where a mass of water droplets gathers around cloud condensation nuclei to saturate the atmosphere and allow condensation and precipitation to take place. This process is driven by three primary lifting mechanisms that cause the upward movement of air.
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  • Why is rain water naturally acidic?

    Q: Why is rain water naturally acidic?

    A: Rain water absorbs carbon dioxide from the air it passes through on its way down. The carbon dioxide reacts with the water to form carbonic acid. This mechanism is one of the principal ways in which atmospheric carbon is scrubbed from the air and put back into circulation among living systems.
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  • Q: What is the difference between rain and drizzle?

    A: Drizzle is defined as liquid drops of precipitation less than 0.02 inches in diameter falling close together, whereas rain is liquid precipitation of greater diameter and spaced further apart. Drizzle falls in amounts of less than 0.03 inches per hour and rain comes down at a rate of 0.04 inches per hour or more.
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  • What is the average annual rainfall in Egypt?

    Q: What is the average annual rainfall in Egypt?

    A: The Arab Republic of Egypt receives an average of 2 inches of rain a year. The amount of rain varies by region: the area along the Mediterranean Sea gets about 8 inches a year, while in the rest of the country, rain is very scarce.
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