Rain How is rain formed?On a hot summer day, you find the pond has almost dried up. Where did the water go?It goes into the air! Each drop of water is made of tiny droplets. When the sun warms them,they rise and become part of the air. It's like the steam from a kettle.Hig...
AA desert refers to a barren section of land, mainly in arid and semi-arid areas, where there is almost no precipitation, and the environment is hostile for any creature to inhabit. Deserts have been classified in a number of ways, generally combining total precipitation, how many days the ...
Most oases will have fresh water springs or ponds above the surface open to the air, and this is what allows both people and plants to inhabit the area.大部分绿洲都有位于地表的，露天淡水泉或淡水池塘，这是人和植物能够在此栖息的保障。But a look from above reveals no river or even stream ...
Rising air is the first ingredient needed for a tornado to develop.上升气流是形成龙卷风所需要的第一个要素。Any storm is formed when condensation occurs, the byproducts of the clouds.当凝结发生的时候，风暴就形成了，风暴是云的副产品。Condensation releases heat, and heat becomes the energy that dr...
1 Most air conditioners start out as raw material, in the form of structural steel shapes and sheet steel. As the sheet metal is processed into fabrication cells or work cells, it is cut, formed, punched, drilled, sheared, and/or bent into a useful shape or form. The encasements or ...
Rain is one of most important natural process for our life. It makes people feel comfortable. How does rain form? Let me introduce for you. Rain is a drop of water falling from the clouds, when the sun is shining and the air is war...
Keep in mind that wearing an avalanche airbag is no guarantee of survival and the first thing to remember is to make smart decisions so you avoid the avalanche in the first place. That said, your chances of coming to rest near the surface after an avalanche and being found faster are gre...
Air is also forced to rise at a weather front. This is due to the differing air masses of the two weather fronts. At cold fronts, cold air is pushed under warm air, forcing it upward and at a warm front, warm moist air is forced up and over the cold air. This process is called...
But if the open air and adventure mean everything to Defoe they mean nothing to Jane Austen. Hers is the drawing-room,and people talking,and by the many mirrors of their talk revealing their characters. And if,when we have accustomed ourselves to the drawing-room and its reflections,we ...
There are two main processes that are important.The first one is a weathering process called frost wedge.Frost wedge a process that widens cracks in rocks in the wintertime.It begins with warm air or daytime sun melting the snow.As the snow turns into water, it seeps into the cracks that...