Factors affecting annual sunshine hours

Question 1: What are the factors that affect the number of hours of sunshine? There are four main factors that affect the number of hours of sunshine: day length, terrain, weather conditions, and latitude.

Day length: The longer the day, the longer the sunshine time, and vice versa;

Terrain: The terrain is high, the sun rises early, sets late, and the sunshine time is long;

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Weather conditions: Sunny weather, warm temperatures, relatively long sunshine hours, and vice versa;

Latitude: The lower the latitude, the longer the sunshine hours, and the higher the latitude, the shorter the sunshine hours. .

The country with the longest sunshine hours in the world: the Sahara Desert in northern Africa. The average annual sunshine time is 4,300 hours, which means that there are 11 hours and 45 minutes of dazzling sunshine every day on average.

Question 2: Read the contour map of annual sunshine hours in a certain area. Answer the following questions. Question 1: The main factors that cause the annual sunshine hours to change from place B to place A are A. Question 1: C Question 2: B Question 3: A Question analysis: Question 1: The figure shows that the annual sunshine hours gradually increase from B to A, mainly due to different climates. A and B are tropical areas respectively. Desert and tropical rainforest climates, and the difference in climate is caused by different atmospheric circulation. Question 2: B and C are at the same latitude, but due to the high terrain of C, it has a savanna climate, with less precipitation and more sunshine hours per year. Question 3: Land A is located in a tropical desert climate zone, so water resources are a limiting factor for its agricultural development. Comments: This question group examines the physical geographical characteristics of Africa and their impacts, and also examines the factors that affect the annual sunshine hours. The figure shows that the annual sunshine hours gradually increase from place B to place A. This is mainly caused by the different climates. A and B have tropical desert and tropical rainforest climates respectively, and the difference in climate is caused by different atmospheric circulation. B and C are at the same latitude, but due to the high terrain of C, a savanna climate is formed, with less precipitation and more sunshine hours per year. Site A is located in a tropical desert climate zone, so water resources are a limiting factor for its agricultural development.

Question 3: The annual sunshine hours in Wuwei, Gansu are smaller than those in Jiuquan. What are the main influencing factors? Why? Thanks! The annual sunshine duration in Wuwei, Gansu is smaller than that in Jiuquan. The main influencing factors are: weather; Jiuquan has less precipitation, more sunny days and long sunshine hours