The imaginary lines joining the points of equal atmospheric pressure on a weather map are known as ______?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Isobar
Isobars are lines on a weather map that join places having the same atmospheric pressure, the pressure being reduced to sea level first. Closely spaced isobars show a steep pressure gradient and strong winds; widely spaced isobars show light winds.
Why the other options are incorrect
Option (1) Isotherm — Incorrect. An isotherm joins places having the same temperature.
Option (3) Isobaths — Incorrect. Isobaths join points of equal depth of water on the floor of a sea or lake.
Option (4) Isohyets — Incorrect. Isohyets join places receiving equal rainfall.