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Floating a needle on water
Thoroughly dry a steel needle. Place it on the tines of a dinner fork and gently smash the surface of the water in a dish with the fork. If you are careful the needle will float as you take the fork away. Look at the water surface closely. Can you see how the surface film seems to curve under the weight of the needle ?
Discuss main factors that influence mass movements. Ans) Things as if climate and food availability will make a big dissimilarity if it is too cold, too dry then people will re
Depletion of Ozone Layer: Since the last decade or so, there is concern about the possible reduction in the ozone layer surrounding the earth. Now the question arises, what h
Disease: All of us, at one time or another, have suffered from fever, aches. vomiting, nausea. diarrhoea, flu, cold, general weaknessetc. Illness can arise from a number of fac
INTRODUCTION : In this unit, we introduce you to the fundamental of personal safety code in a laboratory. If you do not have safe laboratory practice, your life and those of your
would quartzite or sandstone break more easily. please explain
TO ASSEMBLE A CONTINUITY TESTING DEVICE AND TO USE IT FOR CHECKING THE EFFECTIVENESS OF EARTHING IN AN APPLIANCE Here, you read about earthing as an essential requireme
Explain the Autonomic Nervous System (ANS) The autonomic or involuntary part of nervous system controls the functions of the body carried out automatically i.e. initiated in th
Q.What is soil erosion? The blowing away or washing away of land surface by wind or water is known as soil erosion.
The methods of food processing by covering the two major methods- thermal processing dehydration. Food processing methods which include freezing, microwave proces
Persuasive Essay
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