human
What is a compass rose and why is it important?
assistant
A compass rose is an arrangement of points on a map that indicate the directions of true north, magnetic north, and grid north. The points are arranged in a circle with the point representing true north at the center. The other two points represent magnetic north and grid north. True north can be determined by using a compass and measuring the angle between true north and the direction of the sun or stars. Magnetic north is the direction of the Earth’s magnetic field, which varies over time. Grid north is the direction of the grid lines used to create maps. Knowing the difference between these three points helps people navigate more accurately.