Why is the earth called the blue planet? ( big answer please )

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Earth is called blue planet because there is 72% water in earth which looks blue from the space thus our earth is called blue planet

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The earth called blue planet because 71 per cent covered with water 29 per cent covered with land hydrosphere consists of water in all its form.more than  97 % of the earth's water is found in the oceans

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Why is the Earth called the Blue Planet?
The Earth is often referred to as the Blue Planet due to its vast bodies of water that cover around 71% of its surface. This unique characteristic gives the Earth a predominantly blue appearance when viewed from space. Let's delve into the reasons behind this nickname:
- Abundance of Water: The Earth is the only known planet in our solar system to have liquid water on its surface. This water exists in the form of oceans, seas, lakes, and rivers, creating a distinct blue hue when seen from afar.
- Reflection of Sunlight: Water has the ability to reflect sunlight, especially in the blue part of the spectrum. This reflection causes the oceans to appear blue, contributing to the overall blue color of the planet.
- Atmospheric Scattering: The Earth's atmosphere plays a crucial role in scattering sunlight. Shorter wavelengths of light, such as blue and violet, are scattered more easily than longer wavelengths, leading to the blue appearance of the sky and oceans.
- Phenomenon of Rayleigh Scattering: Rayleigh scattering is a process where sunlight is dispersed by molecules in the atmosphere. This scattering is more effective for shorter wavelengths, resulting in the blue color of the sky and water bodies.
- Importance of Water: Water is essential for life on Earth and plays a vital role in various ecological processes. The presence of water in abundance distinguishes our planet from others in the solar system, highlighting its significance as a habitable world.
In conclusion, the Earth's vast water bodies, combined with the reflection of sunlight, atmospheric scattering, and the phenomenon of Rayleigh scattering, contribute to its distinctive blue appearance. This nickname serves as a reminder of the planet's unique and life-sustaining characteristics.

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