Match each aviation directional term to its correct definition: Terms: 1. Magnetic variation 2. Compass deviation 3. True heading 4. Magnetic heading Definitions: A. The angular difference between true north and magnetic north B. The angular difference between magnetic north and compass north caused by magnetic fields in the aircraft C. The direction the aircraft nose points, measured relative to true north D. The direction the aircraft nose points, measured relative to magnetic north

### Why this is right Variation and deviation are distinguished by the pair of north references they connect. Headings are distinguished by the north reference used to express the aircraft's direction. ### The pairs | Item | Matches | Why | |---|---|---| | Magnetic variation | True north and magnetic north | It is the angular difference between these two references. | | Compass deviation | Magnetic north and compass north | It describes the difference between magnetic north and the aircraft compass indication. | | True heading | Aircraft direction referenced to true north | “True” identifies the north reference for the heading. | | Magnetic heading | Aircraft direction referenced to magnetic north | “Magnetic” identifies the north reference for the heading. | ### Terms - **Heading**: The direction in which the aircraft's nose points. - **Compass north**: The north direction indicated by the aircraft compass. ### Remember Ask which two north references are being compared.