Generally, the temperature difference between day and night on a sunny day in Shanghai is closest to

Even though Shanghai is a coastal city, it is still in a subtropical area, so the daytime temperature is not very low. In addition, the "urban heat island effect" has become more and more serious in recent years, resulting in urban areas being The temperature is rising day by day.

At night, because there is a lot of water along the coast and the specific heat capacity of the water is large, it can absorb a lot of heat, causing the temperature to drop.

As a result, the temperature will be higher during the day and then cool down at night, resulting in a slightly larger temperature difference between day and night.

In fact, for comparison, the 10°C temperature difference between day and night is not very large. Compared with inland areas (such as Xinjiang and other places), it is relatively small.

In addition, what it calculates here should be the average temperature difference in a year, and cannot be judged by the temperature difference in one stage (or one season), so it is not reliable to only look at the recent temperature difference.

Moreover, the temperature difference between day and night in Shanghai in summer is sometimes more than 10℃.

The answer of 3℃ is too small. Just imagine, like the recent weather and autumn, the temperature is more suitable during the day, and it is no big deal if you wear short sleeves. But at night, if you only wear short sleeves You will feel cold. Generally speaking, when the human body feels cool, the temperature difference is about 8℃. From this it can also be deduced that the answer is 10°C.

In short, this kind of questions can not be solved by physical knowledge alone, but more of a combination of life, and judging from the second model papers of each district, the combined application of life and physics has become more important. An important object of knowledge investigation.

Take the Changning Model 2 as an example. There are no less than three questions designed to relate to life.

Hey, I am a third-year junior high school student in Changning District, and I still have some impressions of this set of papers. The above explanations are based on my own understanding. If there are any mistakes or incomplete answers, please forgive me and please point them out. After all, I am not a professional. Of course, I would also be happy to discuss it with others.

My favorite is physics! ^-^