In January Isotherms deviate to the north

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3 weeks ago

This question came in the UPSC Civil Services Exam (Prelims) 2024 – General Studies Paper 1

Question 1: Which of the following is/are correct inference/inferences from isothermal maps in the month of January?
1. The isotherms deviate to the north over the ocean and to the south over the continent.
2. The presence of cold ocean currents, Gulf Stream and North Atlantic Drift make the North Atlantic Ocean colder and the isotherms bend towards the north.
Select the answer using the code given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

Answer: (a) 1 only

Topic: Geography – Temperature

Explanation: In January the isotherms deviate to the north over the ocean and to the south over the continent. This can be seen on the North Atlantic Ocean. The presence of warm ocean currents, Gulf Stream and North Atlantic drift, make the Northern Atlantic Ocean warmer and the isotherms bend towards the north. Over the land the temperature decreases sharply and the isotherms bend towards south in Europe.

Statement 2 is false as it is warm ocean currents and not cold ocean currents. Check NCERT chapter.

Source(s): NCERT Geography Class 9 Textbook: Chapter 8 Solar Radiation, Heat Balance and Temperature

Difficulty level: Easy as straight forward from NCERT Textbook

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