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The electric power line enters our house through three wires. One is called the earth wire or ground wire. This carries no electricity. The earth wire is connected to a large metal plate buried deep in the ground. The remaining two wires carry electricity. One of these is maintained at zero potenti..
Conditions for Chemical Change
The criterion for a chemical change is the production of one or more new substances. Therefore, certain conditions should be met in order to bring about a chemical change. The necessary conditions are: A minimum amount of energy needed to initiate a reaction (activation energ..
Hormonal Control of Cyclic Changes in Ovaries and Uterus During Menstrual Cycle
The cyclic changes in the ovary and uterus are under the control of estrogen and progesterone hormones whose secretion is under the control of gonadotropic hormones secreted by anterior pituitar..
The cyclic changes in the ovary and uterus are under the control of estrogen and progesterone hormones whose secretion is under the control of gonadotropic hormones secreted by anterior pituitar..Alteration of habitats and ecosystems
Many of the worlds habitats and ecosystems depend on a delicate balance of rainfall, temperature and soil type. A complex food chain supply exists based on these factors. Higher temperatures and precipitation changes are likely to cause diverse changes such as increas..
Human health and heat stress
Along with warmer temperatures and higher humidity, the number of very hot days is expected to rise in many areas around the globe. Heat stress occurs in such conditions and the young, old and poor people are more susceptible to it. High temperatures will reduce work efficiency of human beings. Fu..
Latent Heat
Experiment 1 - Take a few pieces of ice in a beaker. Insert a thermometer. Note the temperature. You will observe it to be 0 0 C. Now place the beaker on a flame and heat it. Ice starts melting. As you supply heat to ice, its temperature should rise. But you will find that the temperature..
Water for All
. There are some worrying facts about the water situation. The effects of world climate change are being all over including the Indian subcontinent. The increased temperature levels are resulting in changing weather patterns. For a country like India whose agricultural activitie..
Generators
Generators are devices that produce electricity by converting mechanical energy into electrical energy. It works on the principle of 'electromagnetic induction' [Electromagnetic Induction is the creation of a voltage or current due to change in magnetic field]. Most of the electricit..
Generators are devices that produce electricity by converting mechanical energy into electrical energy. It works on the principle of 'electromagnetic induction' [Electromagnetic Induction is the creation of a voltage or current due to change in magnetic field]. Most of the electricit..Question 20
Question: For any substance the temperature remains same during the change of state due to ___________. 1. loss of heat 2. latent heat 3. less supply of heat 4. lattice energy Answer: ..
MARKETS AND THE FUNCTIONS OF GOVERNMENTS
Market Transactions Costs and Benefits of Competition Function of Money Economic Institutions Changes in Supply and Demand Forces that can change Price Sources of Tax Revenue Economic Roles for Governments Public Goods Costs and Benefits of Taxation Impact ..
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