The temperature in polar regions in winter can be as low as
(a) -400 C
(b) 340 C
(c) 450 C
(d) -370 C


Correct Answer(d) -37  


Explanation:

The Earth's polar regions, also known as the cold zones or polar zones, are the areas of the globe that are located within the polar circles that encircle the North and South Poles. The temperature in polar regions in winter can be as low as -37C.

Polar climates come in two varieties: EF, or the climate of the ice caps, and ET, or the climate of the tundra. A climate with an ice cap has no months with an average temperature above 0 °C (32 °F), whereas a climate with a tundra has at least one month with a temperature above 0 °C (32 °F). Even coniferous trees cannot flourish in a tundra climate, but some specialised plants can. No plants can grow in an ice cap climate, and ice slowly builds up until it flows or slides somewhere else. Since no month on Earth has an average temperature of 10 °C (50 °F) or higher due to elevation, several high altitude locations have what is known as an Alpine climate. Alpine climate can resemble ice cap climate or tundra environment.

Polar regions experience less intense solar radiation than other parts of the planet because the sun's energy enters the Earth's atmosphere at an oblique angle, where it spreads out over a larger area and is less concentrated. This is the same factor that makes winters colder than the rest of the year, with the exception of tropical areas.

Extremely cold temperatures, heavy glaciation wherever there is enough precipitation to create permanent ice, brief and cold summers, and extreme variations in daylight hours, with 24 hours of daylight in the summer and total darkness in the middle of the winter, are all characteristics of polar regions.

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Updated on: 12-Jan-2023

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