The Equator is the longest circle of latitude and is the only circle of latitude which also is a great circle. As such, it is perpendicular to all meridians.

Contents

- 1 What is the great circle of a sphere?
- 2 Why is the Equator the only great circle?
- 3 How many great circles are there on Earth?
- 4 Which is the biggest circle on the globe Related Questions
- 5 What are two important great circles?
- 6 What is arc of great circle?
- 7 Is Prime Meridian a great circle?
- 8 Where exactly is the middle of the world?
- 9 What is the difference between Rhumb line and great circle?
- 10 What are the 5 great circles?
- 11 Is a great circle infinite?
- 12 What are the five major circles of the Earth?
- 13 Why is it called a great circle?
- 14 What are the parts of a great circle?
- 15 What is the purpose of great circle?
- 16 What are the two arcs of a circle?
- 17 What is one fourth of a great circle called?
- 18 Is latitude a great circle?
- 19 What is the difference between prime meridian and great circle?
- 20 Why are meridians called great circles?

## What is the great circle of a sphere?

A great circle is a section of a sphere that contains a diameter of the sphere (Kern and Bland 1948, p. 87). Sections of the sphere that do not contain a diameter are called small circles. A great circle becomes a straight line in a gnomonic projection (Steinhaus 1999, pp.

## Why is the Equator the only great circle?

Great circles are seen on all meridians on Earth. All the lines of longitude meet at the poles, intersecting the Earth in half. Thus a great circle always splits the Earth into two halves, so that the Equator is a great circle. All latitudes other than 0° are small circles.

## How many great circles are there on Earth?

There are an infinite number of great circles that can be drawn on any perfect sphere. The longitude lines on a globe all form great circles that pass through the same two points (the North Pole and the South Pole). The Equator is another great circle.

## Which is the biggest circle on the globe Related Questions

## What are two important great circles?

The meridians – or lines of longitude – are also perfect circles. The Greenwich Meridian goes through Greenwich and also the North and South Poles and any line that goes through both the North and South Poles must be a great circle, because the Poles are opposite each other.

## What is arc of great circle?

The shortest distance between two points on a globe is not always a straight line—it’s an arc called a great circle. The shortest distance between two points on a globe is not always a straight line—it’s an arc called a great circle. This complicates long-distance navigation.

## Is Prime Meridian a great circle?

All the meridians on Earth are great circles. Meridians, including the prime meridian, are the north-south lines we use to help describe exactly where we are on Earth. All these lines of longitude meet at the poles, cutting Earth neatly in half. The Equator is another of Earth’s great circles.

## Where exactly is the middle of the world?

The Equator is an imaginary line around the middle of Earth. It is halfway between the North and South Poles, and divides Earth into the Northern and Southern Hemispheres.

## What is the difference between Rhumb line and great circle?

A great circle is the shortest path between two points along the surface of a sphere. A rhumb line is a curve that crosses each meridian at the same angle. Azimuth is the angle a line makes with a meridian, measured clockwise from north.

## What are the 5 great circles?

The great circles of the earth are the latitude lines that circle the globe including the Antarctic Circle, the Tropic of Capricorn, Equator, Tropic of Cancer, Arctic Circle and the the longitude line known as the Prime Meridian.

## Is a great circle infinite?

A line goes on infinitely in two directions. SOLUTION: No; a great circle is finite and returns to its original starting point.

## What are the five major circles of the Earth?

The five major parallels of latitudes from north to south are called: Arctic Circle, Tropic of Cancer, Equator, Tropic of Capricorn, and the Antarctic Circle.

## Why is it called a 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.

## What are the parts of a great circle?

Radius: The distance from the center of the circle to its outer rim. Chord: A line segment whose endpoints are on a circle. Diameter: A chord that passes through the center of the circle. Secant: A line that intersects a circle in two points.

## What is the purpose of great circle?

The most famous use of great circles in geography is for navigation because they represent the shortest distance between two points on a sphere. Due to the earth’s rotation, sailors and pilots using great circle routes must constantly adjust their route as the heading changes over long distances.

## What are the two arcs of a circle?

A chord, a central angle or an inscribed angle may divide a circle into two arcs. The smaller of the two arcs is called the minor arc. The larger of the two arcs is called the major arc. In the illustrations below the circle is divided into two arcs, minor arc BC and major arc BC.

## What is one fourth of a great circle called?

One-fourth of a circle is known as a quadrant. Each quadrant forms an angle of 90°.

## Is latitude a great circle?

Great Circles are lines that split the Earth into equal halves, The Equator is the only latitude while all longitudes are great circles. The remaining latitudes are called small circles.

## What is the difference between prime meridian and great circle?

A prime meridian is an arbitrary meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great circle.

## Why are meridians called great circles?

A Great Circle is a plane that passes through the center of the earth. (e.g. Equator and all Meridians). The shortest distance between any two points on the earth’s surface is attained along the arc of a Great Circle.