Earth and our solar system

Earth is the third planet in our solar system after the sun.

It is the only planet known to sustain life.

The diameter of the earth is about 40,075 km2 (24,901 miles).

It is about 12,742 kilometers (7,918 miles) in size.

71% of land is covered by water.

The remaining 29% is land, consisting of continents and islands.

The earth’s atmosphere is composed of 78% nitrogen, 21% oxygen, and trace amounts of other gases.

The planet’s surface is divided into several tectonic plates.

These plates continue to move, causing earthquakes and volcanic activity.

One natural satellite of the earth is the moon.

The moon influences the earth through its gravitational pull.

The Earth is divided into a solid inner core and a liquid outer core.

The field creates the Earth’s magnetic field.

Earth’s atmosphere is affected by axial twists and orbits around the sun.

The planet experiences four distinct seasons: Spring, Summer, Autumn and Winter.

On average, Earth orbits the Sun at a distance of about 149.6 million kilometers (93 million miles).

A year on Earth is about 365.25 days long.

The surface of the earth consists of mountains, hills, deserts and plains.

The highest point on Earth is Mount Everest, at 8,848 meters (29,029 feet) above sea level.

The Mariana Trench is the deepest part of the ocean on Earth, at a depth of about 10,994 meters (36,070 feet).

The Earth’s atmosphere extends about 10,000 kilometers (6,200 miles) above the surface.

The planet is about 45 million years old.

It is the gravitational pull of the earth that sustains the sky and everything above it.

The planet’s magnetic field protects it from harmful sunlight.

Earth has a wide variety of ecosystems including rainforest, desert and tundra.