| Answer | Crossword Clue |
|---|---|
| isopleth | line on a map connecting points at which a given variable has a specified constant value |
| isallobars | A line on a map connecting points at which the atmospheric pressure has changed by an equal amount during a specified time |
| isallobar | A line on a map connecting points at which the atmospheric pressure has changed by an equal amount during a specified time |
| isotherms | A line on a map connecting points having the same temperature at a given time or on average over a given period |
| cotidal | (on a chart or map) indicating a line connecting points at which high tide occurs at the same time |
| contours | A line joining points on a diagram at which some property has the same value |
