There is no particular name for that event. It was decided long ago that since every
parallel of latitude crosses each of the infinite number of meridians, and that every
meridian of longitude crosses each of the infinite number of latitudes, it would be
cruel to expect students, even gifted ones, to learn all of those names.
Any line of longitude (or of latitude, for that matter), that crosses the United States, will divide it in two.
All lines of longitude are equal. The longest line of latitude is the Equator.
The lines of latitude provide vertical (north-south) coordinates on a map or globe. Lines of longitude provide horizontal (east-west) coordinates. The defined geographical point is where the latitude line intersects the longitude line.
Zero longitude is the prime meridian. Zero latitude is the Equator.
-- The place where a latitude intersects a longitude is a point, not a line. -- There are an infinite number of different longitudes, and each latitude intersects all of them. -- There are an infinite number of different latitudes, and each longitude intersects all of them. -- So you can see that there are a truly huge number of intersections. In fact, every point on Earth is an intersection of one latitude and one longitude, and no two points on Earth are the same intersection. On account of all that, there are no names.
No "named" line of longitude crosses Australia. The Tropic of Capricorn (latitude) crosses Australia.
No "named" line of longitude crosses Australia. The Tropic of Capricorn (latitude) crosses Australia.
Any line of longitude (or of latitude, for that matter), that crosses the United States, will divide it in two.
The Tropic of Capricorn crosses every meridian of longitude on the face of the earth, but no latitudes.
Each line of latitude (the ones parallel to the Equator) crosses each line of longitude (the north - south lines).
The Antarctic Circle is a line of latitude -- which moves, according to the Earth's wobble. As of 10 March 2016, it runs 66°33′46.1″ as a line of latitude and crosses all degrees of E and W longitude on Earth.
Each 'meridian' is a line of constant longitude.
Washington state touches the 155°W longitude line.
Antarctica. The South Pole is at 90 degrees S latitude. The North Pole is at 90 degrees N latitude. All lines of longitude converge at both poles.
-- All lines of longitude meet at the north and south poles. -- No two lines of latitude ever meet or cross each other. -- Every line of longitude crosses every line of latitude. -- Every line of latitude crosses every line of longitude. -- There are an infinite number of each kind, so there are an infinite number of places where a line of longitude crosses a line of latitude. (That's kind of the whole idea of the system.)
Another name for a line of longitude and latitude is a "coordinate line" or "grid line." These lines help to form a grid system that is used to pinpoint specific locations on Earth's surface.
The precise spot where one line of latitude crosses one line of longitude is called a geographic coordinate or a geographic intersection. It is often referred to as a coordinate point or simply a coordinate.