An isohyet is a line joining points having
- AEqual evaporation value
- BEqual barometric pressure
- CEqual height above the MSL
- DEqual rainfall depth in a given durationCorrect
Solution
Concept
Definition and property of isohyet
Formula
NONE
Step-by-step solution
1. Isohyets are imaginary contour lines drawn on a hydrological map. 2. These lines connect geographic points that record equal depths of precipitation over a specific duration. 3. Therefore, an isohyet joins points of equal rainfall depth in a given duration. Answer: D
Explanation
An isohyet is a line drawn on a map connecting geographical locations that receive equal amounts of rainfall during a specified time period. Isohyetal maps are commonly used in hydrology to analyze spatial precipitation patterns over a catchment area.
Why the other options are wrong
A) Isoevaps are lines connecting points of equal evaporation values. B) Isobars are lines connecting points of equal barometric pressure. C) Contours are lines connecting points of equal elevation above mean sea level.
Shortcut
Iso-hyet connects points of equal rainfall depth (hyeto = rain).
Common mistake
Confusing isohyets with lines of equal pressure (isobars) or equal elevation (contours).
Correct answer: D) Equal rainfall depth in a given duration