climatology questions 12) Which climate is characterized by the largest change i

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climatology questions

12) Which climate is characterized by the largest change in monthly average 12) temperatures, i.e, the greatest change in temperatures from one month to the next? J B) dry-midlatitude D) ice cap A) boreal forest C) tundra J 13) The tropical rain-forest climate receives most of its rainfall as a result of 13) A) frontal uplift B) convectional uplift C) orographic uplift 14) Which of the following is incorrect regarding tundra climates? 14) A) They are a type of Polar climate B) There is no true summer in this region. C) Precipitation is in excess of a very small potential evapotranspiration. D) The land is under continuous snow cover from 8 to 10 months. E) Spruce, fir and larch trees survive in this climate zone 15) The Pacific Northwest region of the U.S. is a moist environment because 15) A) the predominant direction the winds blow at that latitude (about 45 to 50 degrees north). B) the effect of maritime air masses. C) the presence of mountains D) all of the above

Explanation / Answer

12. Boreal Forest is characterized by the largest change in monthly temperature, i.e around 5C in October to around -15C in November. This is not the case with any of the other regions where the temperature change is 10C from one month to another at most.

13. Convectional uplifting is responsible for the rainfall in tropical rainforests due to the association with the Intertropical Convergence Zone. Frontal uplift occurs at relatively higher latitudes. Orographic lifting occurs at high altitudes.

14. Options A) is correct as the tundras occur in polar regions, Option B) is correct as the climate is cold year-round. C) is correct as the latent heat release from vegetation is less due to a lack of vegetation. D) is correct as snow cover is dominant for long periods.

Spruce, fir and larch trees don't survive in Tundra climate zone. They are characteristic of temperate, coniferous forests. So, option E) is incorrect.

15. Pacific Northwest region of the US is a moist environment because the predominant westerlies carry the moist air from the Pacific Ocean and hit the mountain chains, i.e. the Cascade Range. So, option D) is correct.

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