On a weather map, which type of front is shown by a line with triangular points on one side?

The type of front represented by a line with triangular points on one side is a cold front. In meteorology, cold fronts are depicted this way to indicate the boundary between a mass of cooler, denser air and a mass of warmer air. As the cold front advances, it forces the warm air ahead of it to rise rapidly, which can lead to the formation of clouds and precipitation.

The depiction with triangular points is significant because it helps meteorologists and weather observers quickly identify the movement of air masses and anticipate weather changes. Typically, the triangles point in the direction of the front's movement, showing that cold air is replacing the warmer air. Understanding this symbol is crucial for interpreting weather patterns and predicting potential storms or changes in weather conditions.

Identifying fronts correctly is essential for forecasting and understanding local and regional weather dynamics, making it important for anyone studying Earth science or meteorology.