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。
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...
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....
British mill owner Lewis Haslam came up with the idea to use mesh for fabric when he was out for a walk with his aunt in cold weather. He noticed that her gloves were riddled with holes, but when he questioned her about them, she maintained that her hands were still warm. Spray colo...
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, ...
Recommended washing temperaturesHand wash or cold Commonly used inUpholstery, wall hangings, dresses, eveningwear, formal robes, dresses, bedding, hats Emerald Green Crushed Flocked Velvet Fabric What is velvet fabric? Velvet is a sleek, soft fabric that is commonly used in intimate garments, uphol...
In Antarctica, it gets recharged with more cold water and then splits in two directions -- one section heads to the Indian Ocean and the other to the Pacific Ocean. As the two sections near the equator, they warm up and rise to the surface in what you may remember as upwe...
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...
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...
Cold, salty water is denser than warmer, fresher water, and can sink beneath it, which can influence the movement of ocean water (currents). How Much Is Salt in the Ocean? According to the USGS, there is enough salt in the ocean so that if you removed it and spread it evenly ...