D Conventional knowledge has it that warm air rises while cold air sinks. This has always appeared to be a fundamental principle of science. However, a study from the University of Californi a (UC) found that there are circumstances in which cool air rises. The study, published recently in...
As warm air rises,it mixes with cooler air above and cools to a point___it stops rising. 相关知识点: 试题来源: 解析 where 答案:where.单词填空.句意:当热空气上升时,它与上面较冷的空气混合,冷却到停止上升的程度.本句是定语从句,先行词是point,在定语从句中做状语,所以填where.当热空气上升...
A,B是VT，后面带东西，A后面不带东西
Air ia agas that expands when heats ,gets lighter ,and moves __52__.When air is cooled ,it gets heavier ,sinks close to the earth's surface ,and flows like water in a great river ,As warm air rises,cold aie rushes __53__ to make its place .Thus wind originates .The wind that...
Twitter Google Share on Facebook warm air mass [′wȯrm ¦er ′mas] (meteorology) An air mass that is warmer than the surrounding air; an implication that the air mass is warmer than the surface over which it is moving. McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Cop...
百度试题 结果1 题目As the warm air rises, cooler air replace it(takes its place). 相关知识点: 试题来源: 解析 热空气上升时,冷空气便占据它的位置。 反馈 收藏
Warm air rises. As it rises, it coolsdown and becomes clouds. This makes it difficultfor the air to hold water vapour (水蒸气). When theair gets cold, the water vapour becomes small dropsof water. Sometimes when it is very cold, the watervapour makes ice crystals (冰晶).Some clouds ...
Thunderclouds form when warm, moist air rises into cooler air above, because either the ground is warmer than usually or because the interaction of two air masses, one warm and one cold, forces warm air to rise. 选项: A、 because either the ground is warmer than usually or because B、 ...
If you know the science, you’d know warm air rises while cold air settles at the bottom. In the summer months, a ceiling fan pushes air down and creates circulation, keeping you cool. During the winter, it is a good idea to reverse the direction of the fan. Usually, there is a sw...
Suspended from the ceiling using a seamless pulley system, the clothes rack quickly dries laundry by utilizing warm air trapped in the ceiling space, and can be lowered to make hanging the clothes a simple task.