Most rainbows form when the Sun's rays strike raindrops falling from faraway rain clouds. Rainbows appear in the part of the sky opposite the Sun, usually in the early morning or late afternoon. What does a rainbow symbolize? Rainbows are a symbol of hope in many cultures. ... Rainbows ...
M: We should probably start by saying how clouds are formed, and then move on to the different types of clouds. We can separate them into low-level, medium-level and high clouds. W: Great, and we should also make a PowerPoint to make the presentation more interesting. M: Right. We ...
Why do nuclear bomb explosions generally form mushroom clouds? Why two tides occur on a day, not just one? Explain why it is more dangerous to be on the top of a hill or mountain during a lightning storm than on level ground. How do astronomers know that sta...
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从而形成水滴。To create clouds, and to have rain, the air has to be cooled.要想产生云彩，进而下雨，空气遇冷是必要条件。Most of the science journals we looked at state that there are three main ways in which this happens.我们研究的大多数科学期刊都指出，雨的形成主要有三种方式。
my present fate; for what had I to do with wings and clouds, who can with difficulty move about on the earth?' If men had all they wished, they would be often ruined. The Flies and the Honey-Pot A NUMBER of Flies were attracted to a jar of honey which had been overturned in a...
This picture-perfect blue sky punctuated with clouds is compliments of Rayleigh scattering. Manuel Breva Colmeiro/Moment/Getty Images "Blue skies, smiling at me / Nothing but blue skies do I see ..." If you've ever wondered why, like Irving Berlin, you see "nothing but blue skies," you...
aI make sure clouds from water vapor, but to wait. 我确定云彩从水蒸气,但等待。[translate] a我将设计一双又轻便又舒适的运动鞋作为礼物送给我妈妈 I will design one pair also to be facile the comfortable athletic shoes to give my mother as the gift[translate] ...
Thus water vapor is formed. It rises and forms clouds in the air. And then, when the clouds rise, they are cooled. The higher they rise, the cooler they are. This causes more and more water vapor to condense (). In this way, the tiny drops of water in the clouds get bigger and...