What makes rainfall




















Waterspouts start out as vortexes, or columns of rotating, cloud-filled wind. As the vortex descends over an ocean or lake, small aquatic animals may be swept up in the waterspouts funnel. Changes in pressure and wind force the waterspout to change back into a low-lying cloud, emptying precipitationincluding any creatures swept up in the waterspoutover a nearby landmass. In , newspapers in Bath, England, reported a rain of tadpoles.

In , a storm brought a rain of minnows down on Ishikawa, Japan. Methane Rain Rain forms on planets besides Earth. On Saturn's moon Titan, precipitation is not water, but methane. Titan received so much rain in that a new methane lake, four times as large as Yellowstone National Park, was formed.

Acids can corrode some natural materials. Acids have pH levels lower than 7. Acid rain can be manmade or occur naturally.

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It is also home to many diverse fish, plant, and crustacean species. The habitats that freshwater ecosystems provide consist of lakes, rivers, ponds, wetlands, streams, and springs. Use these classroom resources to help students explore and learn about these places. Weather is the state of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and cloud cover.

It differs from climate, which is all weather conditions for a particular location averaged over about 30 years. Weather is influenced by latitude, altitude, and local and regional geography. It impacts the way people dress each day and the types of structures built. Explore weather and its impacts with this curated collection of classroom resources. Precipitation is any liquid or frozen water that forms in the atmosphere and falls to the Earth.

As moist air rises up through a cloud, the air cools and the water in it turns into tiny raindrops. This is the same thing that happens when you can see your breath on a cold evening. The temperature change from warm to cool causes water droplets to form in your breath.

In a cloud, these tiny raindrops are very light and float as the rising air pushes them up. But the higher they go, the larger and heavier they get. Eventually, they get so heavy that they fall to the Earth as rain. Gravity easily pulls them down against the air current before they get too big. When clouds are thin and the air is moving slowly, you get nice calm rain. Hard rainstorms happen when there is a lot of moisture in the air and the air moves upwards very fast.

Summer thunderstorms are the perfect example. The warm, moist air rises very quickly — like a hot air balloon — and can be moving as fast as 30 to 40 miles per hour.

The air also holds much more moisture than winter clouds — up to five times as much. All of this creates very tall, thick clouds that are full of moisture. Water droplets form quickly as the air moves up through the clouds. It gives us fresh water to drink, helps farmers grow crops, keeps everything green and lush, and is fun to run around in!

Did you know that without rain, most of our planet would be like a desert? Rain is actually part of a bigger part of the weather called precipitation , which means any form of water that falls to the earth like rain, snow , drizzle, hail and sleet. Water can be in the atmosphere, on land, in the ocean and even underground. It gets used over and over and over again through what is called the water cycle. In this cycle, water changes from liquid, solid and gas which is water vapor.

Water vapor then gets into the atmosphere through a process called evaporation. This then turns the water that is at the top of oceans, rivers and lakes into water vapor in the atmosphere using energy from the sun. This vapor can also from snow and ice too.



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