What information can you find on a compass rose?

A compass rose is a figure on a map or nautical chart that displays the orientation of the cardinal directions—north, east, south, and west—as well as the intermediate directions. Specifically, it provides essential information related to navigation. One critical aspect that can be found on a compass rose includes local variation, which refers to the difference between magnetic north and true north in a specific location. This phenomenon occurs due to the Earth's magnetic field, which is not uniform and can vary in intensity and direction.

Additionally, the date is often included, indicating when the variation was last measured, and the annual change provides details on how the magnetic declination is expected to shift over the years. This information is vital for navigators as it ensures that they can accurately orient themselves and correct for any discrepancies between the magnetic compass they are using and true north.

The other options—weather patterns, map legends, and tide tables—do not pertain to the compass rose. Weather patterns involve atmospheric conditions, map legends explain symbology on a map, and tide tables provide information about tidal movements. None of these relate directly to the functions or information conveyed by a compass rose.