Isotherms make a large north-south shift from January to July over continents in mid-latitude and subarctic zones.

Question

Quizplus · Accepted Answer

This statement is true. Isotherms are lines on a map that connect points of equal temperature. In January, the temperature gradient is steeper in the northern hemisphere than in the southern hemisphere due to the tilt of the Earth's axis. This results in a zonal flow pattern that brings cold air from the north to the mid-latitudes and subarctic regions, causing a southward shift of the isotherms. In July, the reverse happens, as the temperature gradient is flatter in the northern hemisphere and more tilted towards the equator, causing a northward shift of the isotherms.

Isotherms Make a Large North-South Shift from January to July