Question

Earth travels around the sun at a speed of _____ kilometers per hour.
A. 1,06,157
B. 1,07,200
C. 1,08, 877
D. 1, 09, 927

Answer 1

Hint: Earth is a planet of our solar system. Like every other planet, the Earth revolves around the Sun owing to the gravitational pull of the Sun in an almost elliptical path. This is similar to the Moon orbiting the Earth.

Complete Answer:
The planet Earth is the third planet away from the Sun in the solar system. It has a wide surface area of 40,075 km at the parallel equator and a diameter of almost 12,756.3 km.
The Sun is a star located at the very core of the solar system. The Sun consists of a diameter of about 1.392 million km. The Earth spins around itself as it revolves around the Sun.
The movement of the Earth at the equator around itself occurs at a pace of 40,000 kilometers in 24 hours. At the equator, the Earth's surface moves 40,000 kilometers in 24 hours which is almost 1670 km per hour. We divide the equatorial circumference by the total number of hours in a day, that is 24. With the gradual movement towards the extent of poles, the speed decreases to nearly zero. The difference in the position of Earth and Sun is around 147.46 million kilometers. For the Earth to take a single orbit, a complete one year is needed. The associated distance is around 149.6 million kilometers. This measure is often called the Astronomical Unit(AU) in the language of Astronomy. The Earth revolves around the Sun at a speed of about 18.5 miles/sec (30 km/sec).30 km /second is equal to around 110,000 kilometers per hour.
So, the correct answer is Option D.

Note: As Einstein postulated, we cannot measure the speed of an object in silos. There is a need for relativity. We need to mention the reference point with respect to which we want the speed of an object.