What Is The Radius Of The Earth

May 25, 2024 Post a Comment

What is the radius of the earth

Note: The Earth is almost, but not quite, a perfect sphere. Its equatorial radius is 6378 km, but its polar radius is 6357 km - in other words, the Earth is slightly flattened. Eratosthenes was measuring the polar radius, and his value (using the 0.15 km/stadium conversion) lies between the polar and equatorial values.

What is the radius of the earth answer?

The radius of the earth is 6371 km.

What is the radius of the earth in kilometers and in miles?

The value, symbolized rearth, is equal to approximately 6,371,000 meters (6.371 x 106 m). This is roughly 6,371 kilometers (km) or 3,960 statute miles. The Earth is slightly oblate, so its radius in the plane of the equator is a little larger than its radius along the rotational axis.

Is the radius of the earth is 6371 km?

Approximating the figure of Earth by an Earth spheroid, the radius ranges from a maximum of nearly 6,378 km (3,963 mi) (equatorial radius, denoted a) to a minimum of nearly 6,357 km (3,950 mi) (polar radius, denoted b).

How old is the Earth?

4.543 billion years Earth / Age

Is the largest circle on the Earth?

Great circles on Earth are roughly 40,000 kilometers (24,855 miles) all the way around. The Earth isn't a perfect sphere, however. It is an oblate spheroid, meaning it stretches out a little around the Equator in a form called an equatorial bulge. The Equator is around 40,075 kilometers (24,901 miles) in circumference.

What are fossils for Class 7?

Fossils: Fossils are preserved parts of dead organisms. This is the impression of once-living organisms on the earth. Examples of fossils are animal bones, shells, stone imprints, cast molds, etc.

What is radius short answer?

Radius of a circle is the distance from the center of the circle to any point on it's circumference. It is usually denoted by 'R' or 'r'.

What is called radius?

Definition of radius 1 : a line segment extending from the center of a circle or sphere to the circumference or bounding surface. 2a : the bone on the thumb side of the human forearm also : a corresponding part of vertebrates above fishes.

What is the another name of Earth?

Designations
Alternative names	Gaia, Terra, Tellus, the world, the globe
Adjectives	Earthly, terrestrial, terran, tellurian
Orbital characteristics
Epoch J2000

How fast is Earth spinning?

On a normal day, the Earth rotates at roughly 1,000 miles per hour, or 460 metres per second (as measured at the equator).

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 composed of basalt.

What is Earth's length 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 is Earth's distance in km?

Planets:	Earth	Mars
Distance across*	12,800 km or 7,900 miles	6,800 km or 4,200 miles
Atmosphere	Nitrogen Oxygen	Carbon Dioxide
Moons	1	2
Rings	0	0

What is Earth's orbit size in KM?

Yes! Earth orbits the Sun at an average distance of 149.6 million kilometers every 365.2564 days.

How many years old is human?

Anatomically modern humans emerged around 300,000 years ago in Africa, evolving from Homo heidelbergensis or a similar species and migrating out of Africa, gradually replacing or interbreeding with local populations of archaic humans.

Who was the first person to live on Earth?

The First Humans One of the earliest known humans is Homo habilis, or “handy man,” who lived about 2.4 million to 1.4 million years ago in Eastern and Southern Africa.

How did the world start?

A big bang to be exact! Billions of years ago, all matter of the universe was compressed into one tiny point until it finally exploded around 12-14 billion years ago. This explosion is what scientists call the Big Bang. During this time, humongous masses of dust and gas spewed throughout space.

What is the largest object on Earth?

The blue whale grows up to 102 feet long and 25 feet wide at the tail fin. Plus, they each weigh around 190 tons. To give a comparison, a blue whale could be composed of 40 elephants or 2,670 average-sized men.