Quick Answer: What Triggers Rain To Fall?

What happens when it rains?

Once on the land, rainfall either seeps into the ground or becomes runoff, which flows into rivers and lakes.

What happens to the rain after it falls depends on many factors such as: The rate of rainfall: A lot of rain in a short period tends to run off the land into streams rather than soak into the ground..

What is the rain cycle called?

The water cycle is called the hydrologic cycle. In the hydrologic cycle, water from oceans, lakes, swamps, rivers, plants, and even you, can turn into water vapor. Water vapor condenses into millions of tiny droplets that form clouds. Clouds lose their water as rain or snow, which is called precipitation.

Why rain clouds are dark?

White is how our eyes perceive all wavelengths of sunlight mixed together. When it’s about to rain, clouds darken because the water vapor is clumping together into raindrops, leaving larger spaces between drops of water. Less light is reflected. The rain cloud appears black or gray.

What are 5 major types of clouds?

The list of cloud types groups the main genera as high (cirrus, cirro-), middle (alto-), multi-level (nimbostratus, cumulus, cumulonimbus), and low (stratus, strato-) according to the altitude level or levels at which each cloud is normally found.

What causes rain to fall?

Within a cloud, water droplets condense onto one another, causing the droplets to grow. When these water droplets get too heavy to stay suspended in the cloud, they fall to Earth as rain. … Water vapor turns into clouds when it cools and condenses—that is, turns back into liquid water or ice.

How old is the water on Earth?

Newsletter. The sun, at 4.6 billion years old, predates all the other bodies in our solar system. But it turns out that much of the water we swim in and drink here on Earth is even older.

Why is rain so important?

Rain is very important for life. … Rain brings us the water we need. But in many places in the world even where you live, rain has become a menace. Because of pollution in the air, acid gases from factories, cars and homes, the rain is becoming dangerous for the life of every living creature.

Does rain clean the air?

As a raindrop falls through the atmosphere, it can attract tens to hundreds of tiny aerosol particles to its surface before hitting the ground. The process by which droplets and aerosols attract is coagulation, a natural phenomenon that can act to clear the air of pollutants like soot, sulfates, and organic particles.

Why do clouds float?

Clouds form when warm wet air rises and condenses in cold air. … Water droplets in air behave the same way as dust6. The second reason that clouds can float in the air is that there is a constant flow of warm air rising to meet the cloud: the warm air pushes up on the cloud and keeps it afloat.

How is the rain formed?

Rain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then become heavy enough to fall under gravity. … The major cause of rain production is moisture moving along three-dimensional zones of temperature and moisture contrasts known as weather fronts.

Why do some clouds not produce rain?

Clouds produce rain when tiny droplets of liquid water begin to stick together, forming larger and larger drops. … it won’t produce any rain. For example, if there aren’t enough droplets of water in a cloud to collide and form large drops, the tiny droplets will stay suspended in the air and it won’t rain.

How do clouds form rain?

This is exactly how clouds form and make rain. Water from rivers, lakes, streams, or oceans evaporates into the air when it is heated up by the sun. As the water vapor rises up in the air, it condenses, or starts to cool down and turns back into a liquid. Then, droplets of water start to stick together as clouds.