earth science for high school

Question: What is the main cause for winds to blow? Answer: Due to unequal heating of the earth's surface there is a difference in pressure in the atmosphere. The air moves from region of high pressure (cold region) to the region of low pressure (hot region). This mov..

Solar energy is responsible for the blowing of wind. The intensity of sun-rays is stronger near the Equator than at the Polar Regions. Due to unequal heating of the earth's surface, cooler air from the Polar Regions flow towards the equatorial regions to fill the space created by the ho..

Domestic Electric Circuits - Electric power is usually generated at places which are far away from the places where it is consumed. At the generating station, the electric power is generated at 11,000 volts. This voltage alternates at a frequency of 50 Hz. The power is transmitted over long distanc..

Fullerenes are allotropes of carbon that were discovered as recently as 1985. They have been found to exist in the interstellar dust as well as in geological formations on earth. They are large cage like spherical molecules with formulae C 32 , C 50 C 60 , C 70 , C 76 , C 84 etc. The m..

>Metals occupy the groups on the left of periodic table and are largely classified as alkali metals (group IA) alkaline earth metals (group IIA) and transition metals (elements between group IIA and IIIA) Metals and non-metals combine to form electrovalent or ionic compounds by transfer o..

Fossil fuels, like, coal, lignite, petroleum and natural gas are non renewable natural resources. Both have an organic origin and are called hydrocarbon fuels. Coal was formed in nature as a solid from the remains of the trees buried deep inside the earth, some 500 million years ago. ..

Water is a unique and remarkable compound, essential to all forms of life. Human beings and the flora and fauna cannot survive without water on this planet. A large amount of life on this planet is aquatic based i.e., can only survive in water. It is the most abundant substance after air in the ..

To avoid the risk of electric shocks, the metal of an electrical appliance is 'earthed'. Earthed means to connect the metal case of the appliance to the earth (at zero potential) by means of a metal wire (copper) called the earth wire. One end of the ea..

Structure of the earth system Earth's history Earth in the solar syste..

Structure of the earth system Earth's history Earth in the solar syste..