ISOLINES

Isolines- Isolines are used on maps to represent points of equal value.

  Figure: Map representing Contour lines (These are lines joining points of equal elevation). Photo Credit: Google Map

ISOPOR- Equal annual change in magnetic field inclination, declination or other components.
ISOBATH- Equal underwater depth.
ISOPLETH- Equal composition.
ISOCLINAL- Same magnetic dip/inclination.
ISOCHRON- Same time.
ISODYNAMIC- Same magnetic intensity.
ISOGAM- Equal acceleration due to gravity.
ISOTACH- Equal wind speed.
ISOPYCNIC- Equal density.
ISOPIESTIC- Equal pressure, but different T, Vol.
ISOBAR- Equal atmospheric pressure.
ISOMETRIC- Equal variation in pressure.
ISOMAGNETIC- Equal magnetic induction.
ISOHYET- Equal rainfall.
ISOHEL- Equal duration of sunlight.
ISOHALSINE- Equal oceanic salinity.
ISOHALINE- Equal salinity.
ISOGONAL- Equal magnetic declination.
ISOGEOTHERMAL- Equal subterranean temperature.
ISOSTERE- Equal atmospheric density.