KBC Offline Quiz: How many days does it take for the Earth to orbit the Sun?

30

400

366

365

Answer: 365

The only celestial body that is known to have life on it is the planet Earth, which is the third planet out from the sun. Only on Earth is the water on the surface of the planet liquid, despite the presence of huge amounts of water elsewhere in the solar system. The ocean covers around 71% of the area of the Earth, making it significantly larger than the ice caps, lakes, and rivers found on the planet. The remaining 29% of the surface of the Earth is made up of land, which includes both continents and islands. The surface of the Earth is made up of a number of tectonic plates, each of which moves very slowly and interacts with one another to produce mountain ranges, volcanoes, and earthquakes. It is the liquid outer core of the Earth that provides the magnetic field that shapes the magnetosphere and protects the planet from the damaging effects of solar winds.

The Sun is the celestial body that sits directly in the middle of the Solar System. It is a nearly perfect ball of hot plasma that has been heated to the point of incandescence by the nuclear fusion events that take place at its center. The energy that it emits is mostly in the form of light, ultraviolet, and infrared radiation. It is by far the most significant contributor to the energy needs of living things on Earth.

When observed from above the Northern Hemisphere, Earth’s orbit around the Sun takes place at an average distance of 149.60 million kilometres (92.96 million miles), and it moves in an anticlockwise manner. It takes the Earth 365.256 days, which is equivalent to one sidereal year, to complete one orbit, during which time it has gone 940 million kilometres (584 million mi).

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