True north is the north pole of the earth, or the north end of the earth's axis. The magnetic pole of the earth is the top of the earth, if the earth's axis was straight up and down.

The Attitude Indicator shows the pitch and roll of the plane.

An Airfoil is something that is made or naturally moves through the air.

35.5 Statute Miles = 30 Nautical Miles

150 Statute Miles = 130 Nautical Miles