On a warm day, the sunshine heats up the ground, and the air above is also warmed, causing it to expand and rise.在温暖的日子里，阳光使地面升温，上面的空气也变暖了，导致它膨胀上升。As it continues to warm, it absorbs more water because, as we mentioned before, warm air can hold more...
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It goes into the air! Each drop of water is made of tiny droplets(小滴). When the sun warms them,they rise and become part of the air. However, do you know how rain is formed?High in the sky, the air is cool. As the water in the air cools, it changes back into droplets....
When the sun warms them, they rise and become part of the air. However, do you know how they go into the air?High in the sky, the air is cool. As the water in the air cools, it dries up and becomes droplets. They get together to make clouds....
Why does hot air rise? Why can't cold air hold much water vapor? Why is water liquid at room temperature? Why does ice float in liquid water? Why does water cool when it evaporates? Why does ice float? Why does water expand when frozen? How does an air conditioner relate to atmospher...
Cohen actually wrote: "The cold air tends to cool the objects with which it is in contact and the water vapour present in the warmer air is thereby condensed. Mist over water and marshy ground is formed in this way and this dew may therefore be said to fall". I wish to be helpful ...
B.She wanted to ask for a pay rise. C.She asked for some suggestions. 7.What is the possible relationship between the speakers? A.Colleagues. B.Host and babysitter. C.Teacher and student. 听第7段材料,回答第8至9题。 8.What is Scott busy doing now? A.Writing a paper. B.Looking for...
Why does warm air rise? Why does water evaporate faster than alcohol? Why is ice the solid form of water? Why can't cold air hold much water vapor? Why is evaporation a cooling process? Why does water cool when it evaporates?
How Do Air Conditioners Work? By Travis Baugh On July 17th, 1902, Willis Carrier invented the first modern air conditioning system. Carrier’s invention helped give rise to numerous industries that continue to power our economy today. Today’s “modern” cooling systems still operate on the same...
Once someone begins to comment on climate change in the media (television, radio, newspapers, etc.) and establishes a public profile, it is only a matter of