Warm air rises. As it rises, it cools down and becomes clouds. This makes it difficult for the air to hold water vapour (水蒸气). When the air gets cold, the water vapour becomes small drops of water. Sometimes when it is very cold, the water vapour makes ice crystals (冰晶).Some ...
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...
Older hot air heating systems were comprised of a furnace that heated air, sometimes just air from the basement. The warm air rose into the upper areas of the building by convection (warm air, which is less heavy than cold air) rises, displacing colder, more dense air in the building). ...
Without the atmoaphere there would be no weather ,wind ,rain ,snow or clouds .Air is all around us ,we live at the bottom of a great ocean of aiir .It is invisible ,but we can feel it when it moves .There are miles of air above us ,pressing down with great weight on the ...
This trading of heat can happen three different ways: by convection, conduction, and radiation.热量的传递通过三种方式进行：对流、传导和辐射。All three are at play in an igloo.冰屋里面，热量传递的这三种方式都实现了。A person inside will radiate body heat, which moves around the igloo by ...
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
A. It rises above cooler air and cools as it rises高于空气冷却器和冷却,因为它上升 B. Atmospheric pressure drops as warm air rises大气压力下降的暖空气上升 C. Moisture in warm air condenses as the air is cooled水分在温暖的空气凝结的空气冷却 D. All of the above 相关知识点: 试题...
What three things happen to warm, humid air that rises over the equator? Question:What three things happen to warm, humid air that rises over the equator?Why Does Air Rise Over the Equator?:During the day, the sun beats down over the equator. This causes the air to warm. ...
Heat produced by the reaction rises above the heap, is cooled and falls via a central or side channel to the heap base where it is drawn in again, thus forming a self-circulating air flow. Moisture is picked up during circulation and carried into the heap. Appts. comprises a closed, ...
英语翻译这个是讲风的形成过程:1.The sun shines on the ground2.The ground becomes warm3.The air near the ground becomes warm4.The air rises5.Cold air comes to take its place6.The wind blows