It represents a cold front.
The Key, or Legend, or a map gives a list of the symbols used on the map and what they represent. There is a fairly standard set of symbols used for different types of map so that anyone looking at the map can understand what it is being shown. For example, on a weather map a cold front is shown as a black line with semi-circular bumps (in blue if coloured), a warm front is shown as a black line with triangles (in red if coloured) and an occluded front is shown as a black line with alternate semi-circular bumps and triangles.
Common symbols for fronts on a weather map include triangles for cold fronts, semi-circles for warm fronts, and alternating triangles and semi-circles for occluded fronts. These symbols help meteorologists visualize and track the movement of different air masses.
A blue line with blue triangles on a weather map represents a cold front. This indicates the leading edge of cooler air moving into an area, typically associated with a shift in weather conditions such as a drop in temperature and the possibility of precipitation. The triangles point in the direction the front is moving, signaling where the cold air is advancing.
On a weather map, the symbol for a cold front is a blue line with blue triangles facing the direction that the front is moving.
Cold fronts are typically represented by blue lines with triangles pointing in the direction of movement, while warm fronts are shown with red lines and half-circles also pointing in the direction of movement. These symbols help meteorologists visualize and track the movement of weather systems.
The map key gives one information about the symbols on a map.
symbols
Collectively, the symbols, with their meanings, on a map are called a 'legend'.
The key tells u wat the symbols mean on a map
Every map has different symbols and meanings to represent a feature. The legend at the bottom of every map has the symbols and their meanings.
Symbols are small, well, symbols that are ON the map. The Key is off to the side, and tells you what the symbols mean.
Map symbols take up less space than writing. Writing may cover important detail on a map. Map symbols are printed in a legend at the side of the map.