Earth - Our Blue Planet

Earth - Our Blue Planet

1. Size

Diameter: Approximately 12,742 km (7,918 miles)

Surface Area: Around 510.1 million km² (196.9 million square miles)

Volume: About 1 trillion cubic kilometres (260 billion cubic miles)


2. Composition

Core: Made of iron and nickel, solid inner core and a liquid outer core.

Mantle: Composed of silicate rocks rich in magnesium and iron.

Crust: A thin outer layer comprising various minerals, predominantly oxygen, silicon, aluminium, iron, calcium, sodium, potassium, and magnesium.


3. Atmospheric Condition

Composition: Primarily nitrogen (78%) and oxygen (21%), with trace amounts of argon, carbon dioxide, and other gases.

Weather: Experiences various weather conditions, including rain, snow, storms, and sunlight. The atmosphere plays a critical role in regulating temperature and supporting life.


4. Number of Moons

Moons: Earth has one natural satellite, the Moon. It is the fifth largest moon in the Solar System and is about 1/6th the size of Earth.


5. Additional Information

Water Presence: Approximately 71% of Earth’s surface is covered with water, primarily in the form of oceans, seas, rivers, and lakes.

Life: Earth is the only known planet to support life, with a diverse range of ecosystems and species.

Magnetic Field: Earth has a magnetic field generated by the motion of molten iron in its outer core, which protects the planet from solar radiation.

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