Is the circumference of the Earth 8000 miles?

Is the circumference of the Earth 8000 miles?

Earth’s circumference (the distance all the way around the equator) is 24,901 miles (40,075 kilometers). Its diameter (the distance from one side to the other through Earth’s center) is 7,926 miles (about 12,756 kilometers).

How was Earth size measured?

The Greek philosopher Aristotle (384-322 B.C.) is credited as the first person to try and calculate the size of the Earth by determining its circumference (the length around the equator) He estimated this distance to be 400,000 stades (a stadia is a Greek measurement equaling about 600 feet).

Is the Earth taller or wider?

The Earth is a bit wider than it is tall, giving it a slight bulge at the equator; this shape is known as an ellipsoid, or, more properly, a geoid. The Earth’s diameter at the equator is 7,926.28 miles, and its diameter at the poles is 7,899.80 miles.

Why is the circumference of the earth?

The circumference of the Earth varies depending on the length of its diameter at the equator and the poles. It is about 40,075 km around the equator and about 40,008 km from the North Pole to the South Pole.

How fast does Earth spin?

With this information, to work out how fast Earth is spinning we need only our planet’s circumference. At the equator, its circumference is roughly 40,075 kilometres, so dividing this by the length of day means that, at the equator, Earth spins at about 1670 kilometres per hour.

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. In northwestern Canada, they discovered rocks about 4.03 billion years old.

Who is the father of geography?

Eratosthenes, the ancient Greek scholar is called the ‘father of geography. He was the first one to use the word geography and he also had a small-scale notion of the planet that helped him to determine the circumference of the earth.

Who calculated the Earth’s size?

The first person to determine the size of Earth was Eratosthenes of Cyrene, who produced a surprisingly good measurement using a simple scheme that combined geometrical calculations with physical observations. Eratosthenes was born around 276 B.C., which is now Shahhat, Libya. He studied in Athens at the Lyceum.

How heavy is the Earth?

Which country is the Centre of the Earth?

In 1973, Andrew J. Woods, a physicist with Gulf Energy and Environmental Systems in San Diego, California, used a digital global map and calculated the coordinates on a mainframe system as 39°00′N 34°00′E, in modern-day Turkey, near the district of Kırşehir, Kırşehir Province, approx. 1,800 km north of Giza.

Which country is closest to the equator?

The countries near the equator include Ecuador, Colombia, Brazil, Gabon, Republic of the Congo, Uganda, Kenya, Somalia, Maldives, and Indonesia.

Where is center of Earth?

Earth’s core is the very hot, very dense center of our planet. The ball-shaped core lies beneath the cool, brittle crust and the mostly-solid mantle. The core is found about 2,900 kilometers (1,802 miles) below Earth’s surface, and has a radius of about 3,485 kilometers (2,165 miles).

Why is the Earth 40000 km?

This means that Eratosthenes estimated the circumference of the Earth to be about 40,000 km. He also knew that the circumference of a circle was equal to 2 times π (3.1415…) times the radius of the circle. (C = 2πr) With this information, Eratosthenes inferred that the Earth’s radius was 6366 km.

Why Earth is called as the Great Circle?

What is Great Circle? A Great Circle is any circle that circumnavigates the Earth and passes through the center of the Earth. A great circle always divides the Earth in half, thus the Equator is a great circle (but no other latitudes) and all lines of longitude are great circles.

Why is Earth not 40000 km?

If you measure the circumference around the Earth’s equator, you get the 40,075 km figure I mentioned up to. But if you measure it from pole to pole, you get 40,007 km. This is because the Earth isn’t a perfect sphere; it bulges around the equator because it’s rotating on its axis.

What is the circumference of 8000 miles?

c) Since the distance is 8000 miles, the entire circumference of the planet must be 4 x 8000 miles = 32000 miles.

How many miles around is Earth?

Using those measurements, the equatorial circumference of Earth is about 24,901 miles (40,075 km). However, from pole to pole — the meridional circumference — Earth is only 24,860 miles (40,008 km) around. Our planet’s shape, caused by the flattening at the poles, is called an oblate spheroid.

Which planet has a diameter of around 8000 miles?

It’s smaller than the four gas giants — Jupiter, Saturn, Uranus and Neptune — but larger than the three other rocky planets, Mercury, Mars and Venus. Earth has a diameter of roughly 8,000 miles (13,000 kilometers) and is mostly round because gravity generally pulls matter into a ball.

Is the Earth 24000 miles?

Today, most scientists set the earth’s circumference at 40,096 kilometers (24,901 miles). This gives Eratosthenes’ estimate less than a one percent error—an excellent approximation of the earth’s circumference. Syene is not on the Tropic of Cancer, where the sun’s rays are directly overhead during the summer solstice.