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The Solar Family:
Let us now take you on a journey across the universe. We begin from our planet EQrth. It is our home. The Earth is active, lush and fertile. It is a place of blue skies, vast *oceans, cool forests, a world full of life. Its surface is cloaked by an atmosphere in which 'we can breathe, and which keeps the Earth's temperature quite-constant. It spins or rotates on its axis and revolves around the Sun, completing one orbit in one year. The Earth is not alone. It has a companion on its travels, the Moon which orbits the Earth once in 27.33 days. But the Moon is airless, waterless and lifeless; it is a dead world. From the Moon, the Earth appears as a beautiful bluish-white planet. The Earth is not the only planet orbiting the Sun. There are eight other planets that orbit the Sun. The nine planets and their satellites togethkr with the Sun and many asteroids and comets make a family, the Solar System. The planets arc diverse in size, ranging from the giant Jupiter, efeven times the size of Earth, down to tiny Pluto, less than half the size of our planet. Each planet's distance from the Sun is different, Mercury being the nearest and Pluto, the farthest. They are all different from each other in many respects. But let's not dwell on the Solar
What is the only usual mineral to be strongly magnetic other than magnetite: Pyrrhotite
Blowing soap bubbles Soap films and bubbles serve very well for observations on surface tension. You can make a good soap bubble solution by placing three level tablespoonfuls o
Q. Write the purposes of conditioning of wheat prior to milling? The purpose of conditioning of wheat prior to milling are to make the bran and germ pliable, thus preventing th
Crystal Structure of Clays Most clay minerals have two types of basic structural units - tetrahedral and octahedral. The tetrahedral unit is 4- 4 SiO in which silicon
Explain the Thyroid Stimulating Hormone (TSH): TSH, also known as thyrotropin is a glycoprotein and synthesized by thyrotroph cells of the anterior pituitary gland. Its functio
REGULATIONS CONCERNING SAFETY AND HEALTH OF WORKERS IN INDUSTRIAL LABORATORIES The workers in industry engaged in using or producing chemicals, coal, high temperature, intense
father of environmental microbiology
describe the factors which decide the broad area of scientific activity?
Precautions : The following must always be observed while dealing with lasers. 1) Never look along a laser beam or expose any part of your skin to it. Beware of reflected laser
OBLIGATIONS OF THE TEACHERS AND THE HEAD OF THE INSTITUTION TOWARDS MAINTAINING LABORATORY SAFETY Safety in laboratory work is the collective responsibility of the Head of the
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