Life is an Exam !
Sun is the biggest source of energy , however, a number of sources of energy have been discovered and invented by human beings .An energy source is a system which makes energy in a certain way, for instance a hydro-electric station. A hydro-electric station uses the current of the river for the making of electricity.Nuclear energy,wind [...]
The subject of friction is an important one as many an invention is based on the fundmental principle of friction . The science of Friction is part of physics. Friction opposes the relative motion between two surfaces in contact. The force of friction is greater if a rough surface is involved, as the number of [...]
Heat is energy transferred from one body, region, or thermodynamic system to another due to conduction or thermal radiation It is often described as one of the fundamental processes of energy transfer between physical entities.All substance releases heat -some more some less.Sun emits enormous amount of heat eanergy. Here is the fundamental test on heat Test Your Knowledge on Heat [viral-lock message="After you LIKE [...]
The respiratory system is an important characterstics of living organism.In humans and other mammals, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. All living organism respire to get energy from food.This is important for running the body system because each cell of an organism performs certain functions such as nutrition, transport, excretion and reproduction. 10 [...]
The word Electricity is from the New Latin ēlectricus, “amber-like “ coined in the year 1600 from the Greek meaning amber (hardened plant resin), because electrical effects were produced classically by rubbing amber.Electricity is a general term encompassing a variety of phenomena such as lightning, static electricity, and the flow of electrical current in an electrical wire. Test Class VII Level Quiz on Electricity [wdsm_ad id="406" class=" [...]
Light is electromagnetic radiation that is visible to the human eye. Visible light has wavelength in a range from about 380 nanometres to about 740 nm, with a frequency range of about 405 THz to 790 THz. In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not Here [...]
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