At night, due to the large amount of water and large specific heat capacity along the coast, it can absorb a lot of heat, which leads to the temperature drop.
In this way, the temperature is high during the day and then cooled at night, which will lead to a slightly larger temperature difference between day and night.
In fact, for comparison, the temperature difference between day and night of 10℃ is not large, which is relatively small compared with inland areas (such as Xinjiang).
In addition, it should calculate the average temperature difference of a year here, and can't be judged by the temperature difference of a stage (or a season), so it is not reliable to only look at the recent temperature difference.
And the temperature difference between day and night in summer in Shanghai sometimes exceeds 10℃.
The answer of 3℃ is too small. Imagine, like the recent weather and autumn, the daytime is a relatively suitable temperature, and you can 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 around 8℃. It can also be inferred that the answer is 10℃.
In short, such problems can be solved not only with physical knowledge, but also with life. Moreover, from the perspective of the second mode of each district, the combination of life and physics has become a more important object of knowledge investigation.
Take the second paragraph of Changning as an example, there are no fewer than three topics from design to life.
Well, I am a junior high school student in Changning District, and I still have some impressions of this set of papers. The above explanations are all my own understanding. Please forgive me if there are mistakes or answers are not in place. Please also point out that I am not a professional after all. Of course, I'm also glad to have someone to discuss it with. My favorite is physics! -