Question

Horizontal and vertical lines on a map are called _____________.
A. scale
B. grid
C. parallel
D. lines

Answer 1

Hint: The vertical lines are known as lines of longitude and the horizontal lines are known as lines of latitude. The meridians of longitude are the lines of references that determine how far, east or west, a place is from a given line of reference running from the North Pole to the South Pole. Parallels of latitudes are all the parallel circles from the equator up to the poles. Latitudes and longitudes are measured in degrees.

Complete answer:
Horizontal and Vertical lines on a map are called a grid. Grid is a network of meridians of longitude and parallels of latitude. A system of coordinates that allows locating oneself relative to the Equator, North or South, is called Latitude lines. The equator contains the North and South poles respectively and it is an imaginary line that bisects the earth into the northern and southern hemispheres. With the Equator running along the center of the Earth, latitude lines run parallel to each other from East to West. The Tropic of Cancer at $23.5$ degrees north latitude and the Tropic of Capricorn at $23.5$ degrees south latitude is also measured in latitude. The tropics lie in between these lines of latitude and they have the warmest temperatures.
Longitude runs perpendicular to the latitude. A system of coordinates that allows for locating oneself west or east relative to the Prime Meridian is called Longitude lines. The Prime Meridian was created by sailors and runs through Greenwich, England. England is 0 degrees longitude and is a very advanced maritime nation. The International Dateline, situated in the Pacific Ocean and it separates the globe from one day to the next, is located at 180 degrees’ longitude.

Thus, option (B) is correct.

Note: A system designed to pinpoint any location on Earth by laying a vertical and horizontal grid over the Earth's layout known as the geographic grid.