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This IKONOS satellite image was collected on July 16, 2004. The image shows this man-made island that lies off the coast of Dubai in the Persian Gulf. The island is being built from 80 million cubic meters of land dredged from the approach channel to the Emirate's Jebel Ali Port. When complete, this resort will have approximately 1,200 single-family and 600 multi-family residences, an aquatic theme park, shopping centers, cinemas and more.

 

Energy is the basic requirement for doing any kind of work .it is the energy only, that

Moves  trains or cars produces light from a bulb makes rivers flow etc. energy exist

 in eight forms mechanical energy heat energy light energy electrical energy sound energy magnetic energy chemical energy and atomic or nuclear energy

According to the law of science energy can neither be created nor destroyed. it can simply be changed from one form into another. This is known as the law of change of energy. The total energy of the universe is fixed  but it changes from one form into another. The motion of trains buses and cars involves the change of heat energy into mechanical energy, the chemical energy in petrol , coal, etc changes into heat energy of burning. In an electrical bulb , the electrical energy changes into heat and light energy. When we speak before the mouthpiece of a telephone , the sound energy changes into electrical energy and at the receiving end , the same electrical energy changes into sound energy again.

Atomic energy is converted into electrical energy in the nuclear reactors. Chemical reactions in our body produce heat. Energy transformations take place in our daily life.