the four parts of the earth

The earth is a huge sphere. The surface of which is made up of rock, soil and water. It is surrounded by air. The planet earth is only a tiny part of the universe, but it is the home of human beings and many other living things. Animals and plants live almost everywher..

Green house gases in the atmosphere behave much like the glass panes in a green house. Green houses are like small glass houses whose transparent glass roof and walls allow sunrays to pass through. It keeps the heat from escaping, thus allowing vegetables and flowers to grow even in cold weather. ..

About AD1600, William Gilbert, who was a court physician of Queen Elizabeth of England, performed certain experiments using spherical lodestones. When he placed small, pivoted magnetic needles at different positions on this sphere, he found that their behavior was quite similar to that of magnetize..

Earth as a Source of Elements - Most elements are formed due to fusion of simple nuclei to give heavier nuclei i.e., nucleosynthesis or nuclear fusion reactions taking place in the stars. Atoms of these elements began to fall together about six billion years ago to form a system, presentl..

Magnetism and Matter..

Metals and Non-metals..

Gravitational Constant (G) = 6.6734x10 - 1 1 Nm 2 /kg 2 Mass of the Earth (M e ) = 6x10 2 4 kg Radius of the Earth (R e ) = 6.4x10 6 m The value of acceleration due to gravity on Earth is 9.8m/s 2 . This means that when a body falls fre..

A square is divided into four parts as shown in the figure. How many parts in the figure are equal? => 1 or 4 or 2 or 0..

How many parts is the square divided into? Are all the parts equal? => 8 equal parts or 8 unequal parts or 4 unequal parts or 4 equal parts..

How many parts is the rectangle divided into? Are all the parts equal? => 3 unequal parts or 3 equal parts or 4 unequal parts or 4 equal parts..