We are all aware that earth has a natural satellite and that is 'The Moon'. It circles along a fixed orbit. While the moon is the earth's natural satellite, there are other satellites that move round the earth. There are artificial satellites, made by man. Most of these satellites carry some type of radio transmitter and receiver. They can pass as well as receive signals or messages. These artificial satellites serve different purposes and are very helpful to mankind.

By the way Sputnik was the first artificial satellite and it was launched by the U.S.S.R in 1957. After that many satellites have been launched for various reasons. Of them, weather satellites are one variety. They carry Television Cameras which can take pictures of the Earth's surface. Weather forecasters study these pictures and make predictions on prevailing weather conditions. To make the work easy for pilots and sailors, navigation satellites are there. They help the seamen in finding their exact position in all kinds of weather. Communication satellites brought the world closer. They made it possible to send radio messages, telephone calls and Television Programmes between different parts of the Earth. These satellites receive signals from different transmitting stations, amplify or strengthen them and send them back to the earth. The cell phones that we use abundantly today and the different TV channels function with the help of the communication satellites.

Read the passage carefully and answer the following questions:

On the basis of your reading of the above passage fill in the blanks with suitable words:

2300. Which was the first artificial satellite?

2301. Which is the natural satellite of the earth?

2302. What does the weather satellite carry?

2303. Which country launched the Sputnik?

2304. Why do they use navigation satellites?

2305. What is the use of communication satellites?

2306. When was the artiicial satellite launched?

2307. What do most of the artificial satellites carry?

2308. On the basis of your reading, fill in the blank to complete the following sentences

Artificial satellites are ---- to mankind

2309. On the basis of your reading, fill in the blank to complete the following sentences

Artificial satellites are made by

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