high school environmental science

Question: Why do solids not diffuse into one another? Answer: Solids have very little intermolecular spaces, there by not allowing the molecules of another solid to enter. Moreover, the intermolecular force of attraction between molecules of one solid is very high and this prev..

Keeping the prevailing model in mind (Thomson's 'raisin pudding') the cloud of positive electricity should offer little resistance to the passage of alpha particle even though the latter is charged. The reasoning is that alpha particles are moving at high speed and have a great amount of..

This is illicit liquor made by improper distillation or by using methylated spirit. It is cheap and is mostly used by the lower strata of our society. It contains higher percentage of methyl alcohol, which is poisonous. Consumption of such liquor may cause blindness, other serious health problems ..

Substances which allow electricity to pass through them easily are called conductors. These are made from materials which have low resistances. Metals like copper, aluminium, silver, iron, brass and also salt solutions are good conductors of electricity. Substances which do not allow electricity t..

This process is used for oxides of highly reactive metals that are above aluminium in the reactivity series. It is also used for reduction of aluminium oxide. Example: ..

is the external female genitalia. It comprises of the mons veneris, which is the raised pubis. The vaginal opening has two pair of folds on either side. The outer fold is thicker with hair, sweat glands and sebaceous glands and is called labia majora. The inner folds are thinner and devoid of hair..

The circulation of blood between heart and lungs for purification of blood is called pulmonary circulation. During pulmonary circulation, the right ventricle of the heart pumps blood into the pulmonary artery. The pulmonary artery takes the deoxygenated blood to the lungs where it is oxygenated. T..

Excretion and Osmoregulation in Man - Man is a highly evolved vertebrate and so the excretory organs are well develope..

Nature of Light - Light is a form of energy and can be transformed into other forms of energy. You would have observed the path of 'a beam of light' inside a room. This beam is nothing but the scattered light produced by the dust particles. Beam of light becomes invisible if the room is dust free. ..

>Forests are an area of diverse biodiversity consisting mainly of trees, shrubs, wild plants, a variety of organisms and wild life Management of forest resources has to take into account the interests of various stakeholders as well as involve their participation in local conservation management Va..