Question

The line joining places which have the same height above mean sea level is called __________
A) Isohyet
B) Isobar
C) Contour line
D) Isohaline

Answer 1

Hint: Imaginary lines are drawn on the map. They are geometric only which means they don’t exist physically. It is used to find the exact location of any place. These lines are drawn around the globe and help in navigation and finding geographical data.

Complete answer:
According to the question, we need to find out the imaginary line which is drawn on the globe to find out the places which are on the same height of sea level. Let’s examine the options.

A) Isohyet- This is an incorrect answer. These are the imaginary lines that are drawn around the globe to convey the information about the places which receive an equal amount of rainfall in a certain time or for a specific period.

B) Isobar- This is an incorrect answer. These are the lines drawn on the map or any chart to identify the geographical place where atmospheric pressure is the same or we can say in an equal amount. It is measured in the unit of millibars. These lines are drawn from the mean sea level pressure reports.

C) Contour line – This is the correct answer. These lines are drawn on the map to specify that all the places on the one contour line from the land surface area at the same mean sea level. They are enclosed curves. There are three types of contour lines are present names as Index, intermediate and supplementary lines. These lines are perpendicular to the direction of the maximum slope. Furthermore, the slope between them is uniform.

D) Isohaline- This is an incorrect answer. Isolines are lines (or contours) that join points of equal salinity in an aquatic system. Isohaline position refers to the distance (kilometres) of a near-bottom isohaline (usually 2 ppt) from the mouth of a coastal waterway.

So, after analyzing the above options we can say that contour lines are the lines that are drawn on the maps to specific places which have the same height above mean sea level. Hence, the Contour line is the right answer.

Therefore the correct answer is option ‘C’.

Note: There are certain rules about the contour lines. Firstly, these lines never divide or split. Secondly, they do not intersect with each other because the places on the surface of the Earth are not possible to be on different elevations. Thirdly, these lines divide the places of higher elevation with the lower one.