Question

A line on a map connecting places with the same temperature at a given time is known as?
A. Thermogram
B. Thermometer
C. Isotherm
D. Thermograph

Answer 1

Hint:The lines which run on the surface of the map are known as contour lines. They are a crucial way of indicating the rise and fall of the land on a map, showing all the places that are the same height above sea level, about the gradient of the land.

Complete Answer: Looking at the above options:
Option A: Thermogram refers to the use of an infrared camera which is used to distinguish heat patterns and blood flow in body tissues. They are used to diagnose breast cancer. This option is incorrect.

Option B: Thermometer is a device which is used to measure the temperature of an object and determine its degree of hotness and coldness. This option is incorrect.

Option C: Isotherm is a line on a map that connects places with the same temperature at a provided time or for the similar mean temperature for a given duration. They are generally used in meteorology in order to exhibit the proportion of temperature at the Earth's surface or on a graph demonstrating steady level or steady pressure. This option is correct.

Option D: Thermograph is an auto-recording thermometer. This option is incorrect.

Hence, the correct option is C.

Note:
-The curve exhibiting the link between pressure and volume of a given mass of gas when the temperature is steady is called its isothermal curve.

-Alexander von Humboldt is known as the “father of temperature mapping".

-An isotherm should never divide, cross, or touch another isotherm, because accordingly at the intersection point it would have two different temperature importance, which is physically difficult.