A line of longitude.
The imaginary line that connects the North Pole to the South Pole at the surface of the planet is called the Earth's axis. It is an imaginary line around which the Earth rotates.
The dividing line between North and South America is typically considered to be the Panama-Colombia border. This is where the narrowest point of the Americas, known as the Isthmus of Panama, connects the two continents.
The line from the North Pole to the South Pole is known as the Earth's axis. It represents the imaginary line around which the Earth rotates. This axis helps determine the geographic locations of the North and South Poles.
The virtual line that connects the south and north poles and divides the western and eastern hemisphere is called the Prime Meridian. It is located at 0 degrees longitude and passes through Greenwich, England.
You're thinking of the Prime Meridian -- 0 degrees, and the International Date Line -- 180 degrees. Both are lines of longitude.
No line of latitude is a north/south line. A move to the north or south is a change of latitude.
A line running north and south/ up and down is called a vertical line.
Your thinking of the Prime Meridian, which terminates at the poles, and which connects to the International Date Line -- a non-straight line for political reasons, that essentially mirrors the PM, pole to pole.
North South MRT Line was created in 1987.
The line of nodes of the Moon's orbit around the Earth is the imaginary line that connects the two points where the Moon's orbit intersects the plane of the Earth's orbit, known as the ecliptic. These points are called the ascending node, where the Moon moves from south to north of the ecliptic, and the descending node, where it moves from north to south. The line of nodes is significant in understanding eclipses, as solar and lunar eclipses occur when the Sun, Earth, and Moon align closely with this line. The orientation of the line of nodes shifts over time due to gravitational interactions, a phenomenon known as nodal precession.
The defining line was known as the Mason-Dixon line that starts at the southeastern tip of Pennsylvania.
The main North/South line of longitude is the Prime Meridian.