Question

what is the difference in height between a point 520 metre above sea level and 140 below sea level​

Answer 1

Answer:

Redating the earliest evidence of the mid-Holocene relative sea-level highstand in Australia and implications for global sea-level rise

Answer 2

Step-by-step explanation:

$\huge \bf \red {answer}$

Flight Level (FL)

• A surface of constant atmosphere pressure which is related to a specific pressure datum, 1013.2hPa, and is separated from other such surfaces by specific pressure intervals.

• surface of constant atmosphere pressure which is related to a specific pressure datum, 1013.2hPa, and is separated from other such surfaces by specific pressure intervals.Altitude above sea-level in 100 feet units measured according to a standard atmosphere.

• Strictly speaking a flight level is an indication of pressure, not of altitude. Only above the transition level (which depends on the local QNH but is typically

• 4000 feet above sea level) are flight levels used to indicate altitude; below the transition level feet are used.

• e.g. FL250 = 25,000 feet above mean sea level when the pressure at sea level is 1013.2 mb.

• e.g. FL250 = 25,000 feet above mean sea level when the pressure at sea level is 1013.2 mb.Elevation or Heigh

• The vertical distance of a level, a point, or an object considered as a point, measured from a specified datum.