What is the true diameter of Earth?

What is the true diameter of Earth?

“Both of these values are very close to the accepted modern values for the Earth’s circumference and radius, 40,070 km and 6378 km respectively, which have since been measured by orbiting spacecraft. The diameter of a circle is twice the radius, giving us a diameter for Earth of 12,756 km.”

What is Earth diameter and circumference?

“The distance between the north and south poles is approximately 7900 miles while the equatorial diameter is slightly larger at 7930 miles. The circumference of the Earth is just its average diameter, 7915 miles, times the number pi, where pi is 3.14159. This gives us about 25,000 miles for the Earth’s circumference.”

How long is Earth in KM?

“Earth’s circumference is the distance around Earth. Measured around the Equator, it is 40,075.017 km (24,901.461 mi). Measured around the poles, the circumference is 40,007.863 km (24,859.734 mi). Measurement of Earth’s circumference has been important to navigation since ancient times.”

What are the two diameters of Earth?

“From the available mathematical data the equatorial diameter of the earth is about 12756 km and also the polar diameter of the earth is about 12713.6 km.”

What is Earth made of?

“​​The earth is made up of three different layers: the crust, the mantle and the core. This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly com​posed of basalt.”

How heavy is Earth?

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How thick is the Earth?

“Crust – 5 to 70 km thick. Mantle – 2,900 km thick. Outer Core – 2,200 km thick. Inner Core – 1,230 to 1,530 km thick.”

How thick is planet Earth?

“It’s also highly variable in its thickness. Under the oceans (and Hawaiian Islands), it may be as little as 5 kilometers (3.1 miles) thick. Beneath the continents, the crust may be 30 to 70 kilometers (18.6 to 43.5 miles) thick.”

How old is Earth?

“Earth is estimated to be 4.54 billion years old, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date.”

Which country is heart of Earth?

“Antarctica is the sixth continent, but it’s a continent that you can define as the heart of Earth. The world’s main marine current is the circumpolar Antarctic current that moves from west to east around Antarctica.”

Who named Earth?

“All of the planets, except for Earth, were named after Greek and Roman gods and godesses. The name Earth is an English/German name which simply means the ground. It comes from the Old English words ‘eor(th)e’ and ‘ertha’. In German it is ‘erde’.”

How fast is a Earth?

“The earth rotates once every 23 hours, 56 minutes and 4.09053 seconds, called the sidereal period, and its circumference is roughly 40,075 kilometers. Thus, the surface of the earth at the equator moves at a speed of 460 meters per second–or roughly 1,000 miles per hour.”

What is half Earth called?

“Any circle drawn around the Earth divides it into two equal halves called hemispheres. There are generally considered to be four hemispheres: Northern, Southern, Eastern, and Western. The Equator, or line of 0 degrees latitude, divides the Earth into the Northern and Southern hemispheres.”

What is the 2 layer of the Earth called?

“Mantle: It is the second layer of the Earth. It is about 2,900 km deep and has two parts: – the upper mantle, which contains solid and molten rocks. – the lower mantle, which mainly contains solid materials.”

What is Earth 2.0 called?

“Kepler-452b (sometimes quoted to be an Earth 2.0 or Earth’s Cousin based on its characteristics; also known by its Kepler Object of Interest designation KOI-7016.01) is a super-Earth exoplanet orbiting within the inner edge of the habitable zone of the sun-like star Kepler-452 and is the only planet in the system …”

What has 1/4 the diameter of Earth?

“The diameter of the moon is approximately one-fourth of the diameter of the earth.”

What is the true space of the Earth answer?

“Experts have suggested the actual boundary between Earth and space lies anywhere from a mere 18.5 miles (30km) above the surface to more than a million miles (1.6 million km) away.”

What is the diameter of Earth according to aryabhata?

“Aryabhata gives a systematic treatment of the position of the planets in space. He gave the circumference of the earth as 4 967 yojanas and its diameter as 1581 1 24 1 581\large\frac{1}{24}\normalsize 1581241 yojanas.”

Who calculated the Earth’s true size?

“The accepted measurement of the Earth’s circumference today is about 24,855 miles. Given the simple tools and technology that Eratosthenes had at his disposal over 2,000 years ago, his calculations were quite remarkable.”