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Air Navigation, chapter 2
The Earth and Position
StartLesson 1 of 7
The sun, the seasons and day length
See how the Earth's motion and tilt shape sunrise, seasons and day length.
Chapter lessons
1The sun, the seasons and day lengthSee how the Earth's motion and tilt shape sunrise, seasons and day length.2The shape of the Earth and the latitude gridUse the Earth's shape, equator and parallels to read latitude.3Great circle, small circle, rhumb lineTell great circles, small circles and rhumb lines apart.4Difference of latitude and longitudeFind difference of latitude and the shorter difference of longitude.5Distance on the EarthTurn latitude arc into nautical miles and the exam unit conversions.6ConvergencyCalculate how meridians converge between two positions.7Conversion angleUse half convergency to move between rhumb-line and great-circle direction.