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प्रश्न
Explain an artesian basin and an artesian well.
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उत्तर
Artesian basin is a layer of porous or previous rock that lies between two layers of impervious rocks and acts as a reservoir. The rainwater seeps underground and the rock becomes capable of holding water and allowing it to pass through it called an aquifer. A well is bored into the aquifer through which water rises to the surface by natural pressure is called an artesian well.
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संबंधित प्रश्न
On the outline map of Europe, use different colours to mark and label the following:
- Oceans—Arctic, Atlantic
- Seas—Mediterranean, Baltic, North Sea
- Straits—Dover, Gibraltar
- Plateau—Central Massif, Meseta
- Mountains—Alps, Pyrenees, Carpathians
- Rivers—Danube, Rhine, Volga
- Lakes—Ladoga, Onega, Vanern
- Capitals—Paris, Moscow, Berl
Refer to the physical map of Europe in your atlas. Moving in an anti-clockwise direction starting from the Arctic Ocean and the White Sea, observe and note down the names of all the surrounding water bodies such as seas, bays, gulfs, straits, etc. Then mark each of them on an outline map of Europe.
Give geographical reasons:
People faced many difficulties while exploring Africa.
Give the latitudinal extent of Africa and explain why it is mostly a tropical continent.
Name three great explorers connected with the African continent.
Choose the correct answer.
Onshore winds that bring rainfall in winter to the countries around the Mediterranean Sea :
How is the vegetation of the Mediterranean region able to withstand the summer drought conditions?
Why has the area under forest in Europe dropped from 80 percent to 30 percent in recent years?
On the blank outline map of Europe do as directed.
- Use different colours to show the various climatic regions of Europe.
- Mark the areas that have (i) Steppes and (ii) Mediterranean forests.
Collect information about the Great Barrier Reef from encyclopedias or the Internet and write a diary describing all you have learned about it in your scrapbook.
