## How is the Earth measured?

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.Jul 6, 2021

**Earth's Size**

- Volume: 6.73 x 10 11 cubic miles (1.083 x 10 12 km 3)
- Radius: 3,959 miles (6,371 km)
- Diameter: 7,918 miles (12,742 km)
- Surface Area: 1.97 x10 8 square miles (5.1 x 10 8 km 2)
- Mass: 5.972 x 10 24 kg

## What is the full size of Earth?

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).

## Who discovered the measurement of the earth?

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.Jun 21, 2006

## What is the color of Earth?

Short answer: **Mostly blue, with some green, brown and white**. Long answer: There are several main colours of the planet Earth, the dominant colour being blue. This comes from the oceans and the atmosphere. Water is blue when it's more than a few metres deep, and the oceans also reflect blue light from the atmosphere.

## What is Eratosthenes full name?

Eratosthenes, in full **Eratosthenes of Cyrene**, (born c. 276 bce, Cyrene, Libya—died c. 194 bce, Alexandria, Egypt), Greek scientific writer, astronomer, and poet, who made the first measurement of the size of Earth for which any details are known.

## How was the size of the Earth first estimated?

Eratosthenes erected a **pole** in Alexandria, and on the summer solstice he observed that it cast a shadow, proving that the Sun was not directly overhead but slightly south. Recognizing the curvature of the Earth and knowing the distance between the two cities enabled Eratosthenes to calculate the planet's circumference.

## Why is Pluto not a planet?

Answer. The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet **because it did not meet the three criteria the IAU uses to define a full-sized planet**. Essentially Pluto meets all the criteria except one—it “has not cleared its neighboring region of other objects.”Nov 19, 2019

## Who Named the 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'.

## What is the exact measurement of Earth?

- Volume: 6.73 x 10 11 cubic miles (1.083 x 10 12 km 3)
- Radius: 3,959 miles (6,371 km)
- Diameter: 7,918 miles (12,742 km)
- Surface Area: 1.97 x10 8 square miles (5.1 x 10 8 km 2)
- Mass: 5.972 x 10 24 kg

## What is the approximate size of Earth?

- Earth is classified as the largest of the terrestrial planets based on its circumference and diameter as well. At the equator, Earth's circumference is
**24,901.55 miles (40,075.16 km)**. It is slightly smaller between the North and South poles at**24,859.82 miles (40,008 km)**.

### Related questions

##### Related

### How do you measure the weight of the Earth?

**Weight**of the**Earth**is approximately 6×10^24 kg. And this is how it is**measured**. Because we know the radius of the**Earth**, we can use the universal law of gravitation given by Newton to calculate the mass of the**earth**in terms of the gravitational force on an object ( its**weight**) at the**earth**'s surface using the radius of**earth**as the distance.

##### Related

### How do they measure the weight of the Earth?

**Weight**is**measured**using a scale which effectively**measures**the pull on the mass exerted by the gravity of the**earth**. Mass of a body is**measured**by balancing it equally with another known amount of mass. Mass may be**measured**using a pan balance while**Weight**may be**measured**using a spring balance.

##### Related

### What is the exact measurement of Earth?What is the exact measurement of Earth?

**Earth's Size**

- Volume: 6.73 x 10 11 cubic miles (1.083 x 10 12 km 3)
- Radius: 3,959 miles (6,371 km)
- Diameter: 7,918 miles (12,742 km)
- Surface Area: 1.97 x10 8 square miles (5.1 x 10 8 km 2)
- Mass: 5.972 x 10 24 kg

##### Related

### What is the approximate size of Earth?What is the approximate size of Earth?

Earth is classified as the largest of the terrestrial planets based on its circumference and diameter as well. At the equator, Earth's circumference is **24,901.55 miles (40,075.16 km)**. It is slightly smaller between the North and South poles at **24,859.82 miles (40,008 km)**.

##### Related

### How do you measure the weight of the Earth?How do you measure the weight of the Earth?

**Weight** of the **Earth** is approximately 6×10^24 kg. And this is how it is **measured**. Because we know the radius of the **Earth**, we can use the universal law of gravitation given by Newton to calculate the mass of the **earth** in terms of the gravitational force on an object ( its **weight** ) at the **earth**'s surface using the radius of **earth** as the distance.

##### Related

### How do they measure the weight of the Earth?How do they measure the weight of the Earth?

**Weight** is **measured** using a scale which effectively **measures** the pull on the mass exerted by the gravity of the **earth**. Mass of a body is **measured** by balancing it equally with another known amount of mass. Mass may be **measured** using a pan balance while **Weight** may be **measured** using a spring balance.