## What is prime meridian also known as?

Greenwich meridian, also called prime meridian, an imaginary line, last established in 1851, that was used to indicate 0° longitude. It passes through Greenwich, a borough of London, and terminates at the North and South poles.

Why are the lines of longitude also called prime meridian?

Longitudes are known as meridians because in Geographical sense, meridians are great circles which are not parallel to each other but intersect each other at the North and the South Poles. Same stands true of the longitudes. All longitudes are great circles which meet at the Poles.

### Is meridian the same as longitude?

Longitude is measured by imaginary lines that run around the Earth vertically (up and down) and meet at the North and South Poles. These lines are known as meridians. Each meridian measures one arcdegree of longitude. The distance around the Earth measures 360 degrees.

Where is the meridian line?

Greenwich
What is the meridian line? The meridian line in Greenwich represents the Prime Meridian of the world, Longitude Zero (0° 0′ 0″). Every place on the Earth is measured in terms of its angle east or west from this line. Since 1884, the Prime Meridian has served as the reference point for Greenwich Mean Time (GMT).

#### Which are lines of latitude?

Lines of latitude, also called parallels, are imaginary lines that divide the Earth. They run east to west, but measure your distance north or south. The equator is the most well known parallel. At 0 degrees latitude, it equally divides the Earth into the Northern and Southern hemispheres.

What is line of latitude and longitude?

To help locate where a place is in the world, people use imaginary lines: To find out how far north or south a place is, lines of latitude are used. These lines run parallel to the Equator. To find out how far east or west a place is, lines of longitude are used. These lines run from the top of the Earth to the bottom.

## How many meridians of longitude are there?

360 meridians
There are 360 meridians- 180 to the east and 180 to the west of the Prime Meridian. The meridians in the Eastern Hemisphere are marked as ‘E’ and meridians in the Western Hemisphere are marked as ‘W’. The meridian of 180˚ E and meridian of 180˚ W are in the same line.

What is prime meridian and equator?

The Prime Meridian divides the globe into Eastern and Western hemispheres, just as the equator divides the globe into Northern and Southern hemispheres. The Prime Meridian is at 0 degrees longitude, just as the equator is at 0 degrees latitude.

### What is the line of latitude called?

parallels
Lines of latitude, also called parallels, are imaginary lines that divide the Earth. They run east to west, but measure your distance north or south. The equator is the most well known parallel. At 0 degrees latitude, it equally divides the Earth into the Northern and Southern hemispheres.

What are longitude and latitude lines?

The lines running North to South are called “Meridians” or “lines of longitude” (Figure 2), while the lines running East to West are called “Parallels” or “lines of latitude” (Figure 3).