Which technique should a pilot use to scan for traffic to the right and left during straight-and-level flight? How can you determine if another aircraft is on a collision course with your aircraft? What preparation should a pilot make to adapt the eyes for night flying?
Because of this designation, longitude is measured in degrees west or east of the Prime Meridian. For example, 30Â°E, the line passing through eastern Africa, is an angular distance of 30Â° east of the Prime Meridian. 30Â°W, which is in the middle of the Atlantic Ocean, is an angular distance of 30Â° west of the Prime Meridian.
Lines of longitude run vertically around the planet from 0 to 180 degrees. They are not parallel. Instead, they cross each other at the poles and are farthest apart at the Equator. The Prime Meridian as it passes through Greenwich, England, is considered 0 degrees longitude.