Category: Basic Science

Teenage pregnancy is pregnancy that happens in human females under the age of 20 at the time that the pregnancy ends. A pregnancy can take place in a pubertal female before marriage, which signals the possibility of fertility, but usually occurs after marriage. Teenage pregnancy is defined as pregnancy that occurs in women below the age of 20. It is common that at this age, the girl has not completed her education and is completely dependent upon her parents thus unable to provide for the unborn child....

Meaning of Satellite A satellite is an object that revolves round another object (which is known as its primary). Satellites can be man-made or may be naturally occurring such as moons, comets, asteroids, planets, stars and even galaxies. An orbit is the path that an object makes around another object while under the influence of a source of centripetal force, such as gravity. Orbits were first analyzed mathematically by Johannes Kepler who formulated his results in his three laws of planetary motion. Isaac Newton demonstrated that Kepler’s laws were derivable from his theory of gravitation and that, in general, the orbits of bodies responding to the force of gravity were conic sections....

The interest of man in space has existed from ancient times when man employed the naked eyes to study and speculate on the moon, the stars, the sun, and other things which were imagined to be there in space. As time went by, man began to carry out more systematic studies of space. By the second century AD, a Greek mathematician called Ptolemy proposed that the earth moved in space. By the 16th century AD, some other scientists such as Tycho Brahe and Kepler had deducted the relationships between the motion of the earth round the sun and the motion of the moon round the earth. In the year 1686, Isaac Newton deduced and published the laws of mechanics. These...

Gravitation is a science concept that lead had been known and understood from Newton’s time. It was he who propounded the laws of universal gravitation from mathematical theory. Since that time, the theory has been used by other scientists in computing various constants and quantities that relate to objects on earth and in space. Gravitational pull is a force of attraction which everybody exerts on every other body. The earth has a large gravitational pull on objects because of its large size. Meaning of Gravitation...

The age we live in is sometimes called the Space Age. It is in this age that the longing of man to reach out beyond the earth changed from wishing to reality. The Universe The Universe is a very expansive space which includes all the stars and our solar system. Our solar system consists of the sun and nine planets which include Mercury, Venus, Earth, Mars, Jupiter, Saturn, and Uranus, Neptune and Pluto and their moons. The light, which reaches the earth, comes from the sun and the stars. The stars are themselves suns with their own solar systems. Light travels at a very high speed. The sky on a bright night seems to be filled with stars. Though each...