A. denser than cold air B. less dense than cold air C. the same density as cold air D. not related to density 相关知识点: 试题来源: 解析 B。热空气上升是因为它的密度比冷空气小,B 选项正确。A 选项热空气密度大于是错误的。C 选项密度相同不符合实际。D 选项说与密度无关是错误的。反馈...
选项 A“denser than the cold air”比冷空气密度大,热空气应密度小才会上升。选项 B“less dense than the cold air”比冷空气密度小,所以会上升,符合。选项 C“at the same density as the cold air”与冷空气密度相同,不会上升。选项 D“not related to density”与密度无关,不符合物理规律。
cold air is denser than warm air. How do you know if the air in your house is dry? How to know if you have dry air at home Getting shocked due to discharge of dry air. ... Feeling dehydrated due to dry air's low humidity. ... Feeling cold despite winter thermostat settings....
17. Is your current weather extremely hot, cold, humid, or dry?Extreme weather conditions can impact dough quality and fermentation. Hot and humid weather can speed up proofing, while cold weather can slow it down. Be prepared for shorter or longer proof and bake times than usual, depending...
With water, colder and saltier equals denser. At the earth's poles, when water freezes, the salt doesn't necessarily freeze with it, so a large volume of dense cold, salt water is left behind. When this dense water sinks to the ocean floor, more water moves in to replace it, ...
Below is a table showing the killers in every 100 deaths in a city during the last three decades. Look at the graph and write an essay of about 120 words making reference to the following points: 1) the distribution of killers in different decades an
Black ice will develop when it rains at temperatures near the freezing mark. The water will turn to ice shortly after hitting a cold surface such as pavement or sidewalk. You want to be aware of the weather before going out to drive. If you take notice that the road is patchy with dry...
Fig. Looming at cold sea–shore Explanation: It is due to total internal reflection. In cold evening, over sea–bed sea water becomes too cold. Air layer in its contact is cold and denser. As we go up, air layers become less and less colder and hence rarer. (Fig.) Rays from invisib...
Cold-water species also have higher lipid contents in the other blubber, which also likely serve to keep this layer flexible. Study of microvascularity of blubber in some odontocetes suggested that is might be related to diving behavior, with metabolism and thermoregulation involved, although this...
and vegetables such as raw or roasted sweet peppers bring color and yet another dimension of flavor to Mediterranean couscous. Whether it is a simple creation or a highly crafted work of art, there are few people who don’t love the interwoven flavors and textures of a hot or cold couscous...