Sun
Sun
Mrs. Anwer : girls, do you know anything about the big blue roof above us we (Teacher) call the sky Yes, it is the sky where we can see the sun in the morning, the moon(Student) and the countless stars at night.
Mrs. Anwar Good! But let me tell you more about it. The sky in fact is an empty space all around our earth. It causes clouds, rain, and cool winds. Sometimes it brings hail and snow storms and sometimes dusty and very hot winds Aisha How far is the sky from us, Miss?
Mrs. Anwar It is very far from us. It is not possible to measure its distance from the earth. It is so far that its nearest neighbour, the moon, is 240,000 miles away. The sun is surrounded by millions of stars, planets and galaxies Aisha What are stars, planets and galaxies, Miss?
Mrs. Anwar The stars are a burning matter of gases and have their own light like fireballs. The sun is also a star. A planet is a huge, solid mass. Some planets are very hot and some are very cold. All of these are moving round the sun. These are Mercury, Venus, Jupiter, Saturn, Uranus, neptune and pluto. Our earth is also a planet. The stars are fixed.
They do not move but the planets move round their axis and also round the sun. round e Sun are in fact huge clusters containing billions of stars and planets.
Aisha Mrs. Anwar Earth rotates around its axis, we have day and night movement of the earth around the sun in a year is complete. This responsible for the change of our seasons, movement of the earth i.e. winter, spring, summer and autumn. It is very interesting, indeed. Does the moon also move? And if so Aisha with what result? circle around the Earth
Mrs. Anwar Yes the moon too revolves. It completes in about 29/30 days. The Islamic calendar is based on our movements. The study of the stars is called Astronomy. astronomers like Abdul Haissam, Bu Ali Sina and other stars from the discovery of several new groups and the use of their name being made in their name. Arabic. We can discover new things about planets Modern scientists are trying The first man-made satellite was sent into space by the Russians in 1957. Its name was sputnik. It was meant to study changes of climate. Russians, the Americans sent their own satellite into Soon after the Russians, the Americans sent their own satellite into space. Miss! Has Pakistan also sent any rocket into space?
Aisha Mrs. Anwar Yes Pakistan's first rocket was fired at Son-Miani near Karachi in 1972. Can we go and live on any of these planets? Aisha
Mrs. Anwar No, it is not possible because some of the planets are extremely hot being nearest to the sun. Mercury, for example is one such planet. Some of these planets are extremely cold because they are farther from the sun. Pluto, for example, has no air and water. Saturn, Venus, Jupiter and Mars are also not fit to live. Then why are we spending so much money on research about these Aisha planets?
Mrs. Anwar You know that the population of the world is increasing tremendously every day while the resources are not increasing at the same rate. Scientists and other experts think that one day we may be short of food and other commodities on earth. So we must explore new worlds with large resources. Recently, a spaceship called Shuttle has been sent into space by America. It is a kind of laboratory. On the ground, which can not be many difficult experiences about these planets very interesting things I have been saying from space satellite pictures can be. What are the uses of sending these satellites into space?
Mrs. Anwar We can watch live programmes of any other country of the world on television. We can forecast weather and thus tell beforehand Aisha whether it is going to be dry or wet been a informative lecture today. We have learnt so many new things. Thank you, Miss.
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