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Subjects

Geography

Insolation and factors affecting it

In Class 11 Geography, this topic explains insolation—the incoming solar radiation received by Earth—and its role in the chapter Solar Radiation, Heat Balance, and Temperature. Students learn how the angle of the Sun’s rays, duration of daylight, latitude, season, Earth–Sun distance, and atmospheric conditions affect the amount of energy reaching different places. The topic also helps them understand why heating varies across Earth’s surface and how these variations influence temperature patterns and the broader heat balance.

Medium · Level 6 · 25 questions

Practice questions

01If snow melts and darker soil appears, why can heating increase?

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02Why can daily temperature range over oceans be smaller than over land?

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03If insolation is high on a surface but evaporation is also high, why can temperature rise be limited?

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04Which statement correctly explains the effect of atmospheric transparency on insolation?

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05If a place has more clouds but a dark surface, how can absorption of energy that reaches the surface be?

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06Why can insolation differ at two places on the same latitude?

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07In which condition can a polar region remain less warm even if the day is long?

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08Which option contains all factors that reduce insolation?

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09Which option gives conditions that increase insolation and surface heating?

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10If less insolation is reaching the surface, which atmospheric reason is possible?

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11What is the most correct understanding in a question related to solar constant?

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12How does Earth's spherical shape affect the distribution of insolation?

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13If sun rays are oblique, what will be the result of a longer atmospheric path?

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14Why is insolation different in morning, noon, and evening on the same day?

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15What is the main astronomical reason for yearly change in insolation?

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16If a question says temperature is low despite higher insolation, which reason can be suitable?

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17In which condition can a city's local temperature be higher than an open rural area?

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18In which condition can one slope of a mountain valley be warmer than the other?

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19Which option correctly explains the difference between insolation and heating?

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20If a place has vertical rays but a very short day, how should total insolation be assessed?

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21If a place has more clouds but the surface has low albedo, which conclusion is correct?

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22In which situation can surface properties control temperature more than insolation alone?

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23Why can insolation feel higher in an open field on a clear sky day?

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24Which analysis is most correct for a medium level question on insolation?

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25Which statement best describes the real effect of insolation?

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