Question

In Kara Qum desert, the rocks are exposed to what temperatures in summer and winter respectively?

(a) 70-80° C and -10° C

(b) 20-30° C and -1° C

(c) 40-50° C and  0° C

(d) 25-35° C and  -3° C

I have been asked this question in homework.

I'm obligated to ask this question of Geological Work of Atmosphere in section Geological Work of Natural Resources of Engineering Geology

Answer 1

Right option is (a) 70-80° C and -10° C

The explanation is: Studies have shown that in desert like Kara Qum, rocks are exposed to as high temperatures as 70-80° C in summer and are then cooled down to -10° C in winter. Such repeated variations in temperature experienced by a body of rock gradually break it into smaller pieces.