Hot air rises because when air is heated, its molecules move faster and faster making them move further and further apart. When they are further...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
英语填空1.Hot air rises,but cold air( ).2.In tropical areas,it is never( ).3.In a rainforest it rains every day.The ground is always( ).4.In temperate areas,the temperature does not go( )-3度. 英语作业帮用户2017-11-10 举报 用这款APP,检查作业高效又准确!扫二维码下载作业帮 4亿+...
She sees my talent and pushes me to do the best I possibly can. As I was growing up, we were often on the move. I had to admit that moving so often made me feel lonely. But my mother did everything she could to help me feel happy. In fact, so much traveling was really a goo...
Do We Feel Hot or COLD? Air Temperature Does Not Tell Us Everything!doi:10.1080/00368120209603629Yu-PingChouInformaworldScience Activities Classroom Projects & Curriculum Ideas
What happens when cold and warm air currents meet? Why does water expand when frozen? How does diffusion vary from gas to liquid to solid? Explain how convection currents are produced in the air. How does salinity affect density? How does heat move from one place to another in the troposph...
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While driving through fog recently, I tried to recall what fog really is and why it occurs. There are varying forms of water, such as liquid, solid and gas, but what is fog? It is actually a low cloud of air condensation, which is water that collects as droplets on a cold surface ...
When the weather is hot,you go to a lake or an ocean.When you are near a lake or an ocean,you feel cool.Why?The sun makes the earth hot,but it cannot make the water very hot.Although the air over the earth becomes hot,the air over the water stays cool.The hot air over the ...
It was a very cold day and the wind was blowing. But Li Yungang didn’t feel it. He even felt hot. After all, this 14-year-old student from Beijing Jingshan School was cutting grass for three hours. This was the first time this city boy had done any farm work. “It was not that...
“shoots” hot or cold water into the food bag with a special gun.He eats the food that come in bite sizes.The astronauts puts a whole piece in his mouth at once.There can be no crumbs(碎屑).Crumbs would float around the spaceship and get in the way.Meat and cake often come in ...