What is the source of most of the world rain?

What is the main source of rain?

What causes rain? Clouds are made of water droplets. 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.

What is the source of most of Earth’s rainfall?

Precipitation can be described as water that is formed in the atmosphere and then falls to the surface. Some of the most common forms of precipitation include rain, snow, drizzle, sleet, and hail. About 40% of the water available for precipitation is from the evaporation of ocean water while the rest is from land.

Where does most of the world’s rain water come from?

86% of those raindrops and snowflakes come from the ocean where 434,000 km3 (104,000 mi3) of water evaporates into the atmosphere each year. Water eventually returns to the ocean as precipitation that falls directly into the sea and as precipitation that falls on land and flows to the ocean through rivers.

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What is the major source of rainfall in India?

34.18 Rainfall during June – September constitutes the rains due to monsoon, which is the major source of rain in India.

What are the 4 types of rainfall?

Types of Rainfall

  • Convectional rainfall.
  • Orographic or relief rainfall.
  • Cyclonic or frontal rainfall.

How is rainfall caused Class 7?

As the warm air is forced upwards it cools. When the temperature drops to below the dew point, when the air can no longer hold all its water, the water starts to condense and form clouds that cause rain.

Why is rain called rain?

Middle English rein, from Old English regn “rain, descent of water in drops through the atmosphere,” from Proto-Germanic *regna- (source also of Old Saxon regan, Old Frisian rein, Middle Dutch reghen, Dutch regen, German regen, Old Norse regn, Gothic rign “rain”), with no certain cognates outside Germanic, unless it is …

What does the rain do to the earth?

What does the rain do to the earth? Answer: As the rain descends on the earth, it settles the dust on its way. It washes the earth, infuses life into the sepds, makes the earth clean and beautiful by generating life into the latent seeds.

Does most rain come from the ocean?

The ocean plays a key role in this vital cycle of water. The ocean holds 97% of the total water on the planet; 78% of global precipitation occurs over the ocean, and it is the source of 86% of global evaporation.

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How does most of Earth’s precipitation come from the ocean?

Snowpacks in warmer climates often thaw and melt when spring arrives, and the melted water flows overland as snowmelt. Most precipitation falls back into the oceans or onto land, where, due to gravity, the precipitation flows over the ground as surface runoff.