The imaginary lines joining the points of equal atmospheric pressure on a weather map are known as ______?

Isobar

The correct answer is Option (2) → Isobar

• Isobar – imaginary lines joining points of equal atmospheric pressure on a weather map.
• Isotherm – lines joining points of equal temperature.
• Isobaths – lines joining points of equal water depth.
• Isohyets – lines joining points of equal rainfall.

Therefore, the lines of equal atmospheric pressure are called Isobars.