Chapter 4 

Chadrayan -I: A mission to the moon

       

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1.    Answer the following: ( āϤāϞāϤ āĻĻিāϝ়া āĻ•āĻĨাāĻŦোā§°ā§° āωāϤ্āϤ⧰ āĻĻিāϝ়āĻ• )


a) What is the difference between a satellite and a spacecraft? 

āωāĻĒāĻ—্ā§°āĻš āφ⧰ু āĻŽāĻšাāĻ•াāĻļāϝাāύ⧰ āĻŽাāϜāϤ āĻĒাā§°্āĻĨāĻ•্āϝ āĻ•ি?

Ans   The difference between a satellite and a spacecraft is that a satellite moves around the earth, while a spacecraft travels into space away from the earth.

āωāĻĒāĻ—্ā§°āĻš āφ⧰ু āĻŽāĻšাāĻ•াāĻļāϝাāύ⧰ āĻĒাā§°্āĻĨāĻ•্āϝ āĻš’āϞ āωāĻĒāĻ—্ā§°āĻš āĻĒৃāĻĨিā§ąীā§° āϚাā§°িāĻ“āĻĢাāϞে āϘূā§°ি āĻĢুā§°ে, āφāύāĻšাāϤে āĻŽāĻšাāĻ•াāĻļāϝাāύ āĻĒৃāĻĨিā§ąীā§° āĻĒā§°া āφঁāϤ⧰āϤ āĻŽāĻšাāĻ•াāĻļāϞৈ āϝাāϤ্ā§°া āϕ⧰ে


b) How many missions to the moon have been carried out so far?

 āĻāϤিāϝ়াāϞৈāĻ•ে āϚāύ্āĻĻ্ā§°āϞৈ āĻ•িāĻŽাāύāϟা āĻŽিāĻ›āύ āϏāĻŽ্āĻĒāύ্āύ āĻšৈāĻ›ে?

Ans: So far, there have been sixty-eight missions to the moon.āĻ

āϤিāϝ়াāϞৈāĻ•ে āϚāύ্āĻĻ্ā§°āϞৈ āφāĻ āώāώ্āĻ িāϟা āĻ…āĻ­িāϝাāύ āĻšৈāĻ›ে।


c) Where is Sriharikota?

 āĻļ্ā§°ীāĻšā§°িāĻ•োāϟা āĻ•'āϤ?

Ans: Sriharikota is an island on the east coast of Andhra Pradesh, about 100 km from Chennai, in the Bay of Bengal.

āĻļ্ā§°ীāĻšā§°িāĻ•োāϟা āĻ…āύ্āϧ্ā§° āĻĒ্ā§°āĻĻেāĻļā§° āĻĒূāĻŦ āωāĻĒāĻ•ূāϞāϤ āϚেāύ্āύাāχ⧰ āĻĒā§°া āĻĒ্ā§°াāϝ় ā§§ā§Ļā§Ļ āĻ•িāϞোāĻŽিāϟাā§° āύিāϞāĻ—āϤ āĻŦংāĻ— āωāĻĒāϏাāĻ—ā§°āϤ āĻ…ā§ąāϏ্āĻĨিāϤ āĻāϟা āĻĻ্āĻŦীāĻĒ।


d) How many Indian scientific instruments were there in the Chandrayan-I? 

 āϚāύ্āĻĻ্ā§°াāϝ়āĻŖ-āĻĒ্ā§°āĻĨāĻŽāϤ āĻ•িāĻŽাāύ āĻ­াā§°āϤীāϝ় āĻŦৈāϜ্āĻžাāύিāĻ• āϝāύ্āϤ্ā§° āφāĻ›িāϞ?

Ans: There were five Indian scientific instruments in Chandrayaan-I.

āϚāύ্āĻĻ্ā§°āϝাāύ-āĻĒ্ā§°āĻĨāĻŽāϤ āĻĒাঁāϚāϟা āĻ­াā§°āϤীāϝ় āĻŦৈāϜ্āĻžাāύিāĻ• āϝāύ্āϤ্ā§° āφāĻ›িāϞ।


e) Who was the first man to walk on the moon?

 āϚāύ্āĻĻ্ā§°āϤ āĻ–োāϜ āĻ•āĻĸ়া āĻĒ্ā§°āĻĨāĻŽ āĻŽাāύুāĻš āĻ•োāύ āφāĻ›িāϞ?

Ans: Neil Armstrong was the first man to walk on the moon.

āϚāύ্āĻĻ্ā§°āϤ āĻ–োāϜ āĻ•āĻĸ়া āĻĒ্ā§°āĻĨāĻŽāϜāύ āĻŦ্āϝāĻ•্āϤি āφāĻ›িāϞ āύীāϞ āφ⧰্āĻŽāώ্āϟ্ā§°ং।


f) Which instrument dropped the National flag on the moon?

āĻ•োāύāϟো āĻŦাāĻĻ্āϝāϝāύ্āϤ্ā§°āχ āϚāύ্āĻĻ্ā§°āϤ ā§°াāώ্āϟ্ā§°ীāϝ় āĻĒāϤাāĻ•া āĻĒেāϞাāχ āĻĻিāϞে?

Ans: The instrument that dropped the National Flag on the moon was the Moon Impact Probe (MIP).

āϚāύ্āĻĻ্ā§°āϤ ā§°াāώ্āϟ্ā§°ীāϝ় āĻĒāϤাāĻ•া āύিāĻ•্āώেāĻĒ āϕ⧰া āϝāύ্āϤ্ā§°āϟো āφāĻ›িāϞ āĻŽুāύ āχāĻŽāĻĒেāĻ•্āϟ āĻĒ্ā§°’āĻŦ (MIP)।


g) Why 22nd October, 2008 is a Red Latter Day for National flag on the moon?

⧍ā§Ļā§Ļā§Ž āϚāύ⧰ ⧍⧍ āĻ…āĻ•্āϟোāĻŦā§°āϤ āϚāύ্āĻĻ্ā§°āϤ ā§°াāώ্āϟ্ā§°ীāϝ় āĻĒāϤাāĻ•াā§° āĻŦাāĻŦে ā§°āĻ™া āφāĻ–ā§° āĻĻিā§ąāϏ āĻ•িāϝ়?

 Ans October 22nd, 2008, is considered a red-letter day for India because it marks the launch of Chandrayaan-I, which successfully carried the Moon Impact Probe (MIP) with the National Flag printed on it. The MIP ejected from Chandrayaan-I and crashed on the moon, making it a golden moment for all Indians as the tricolor was dropped on the moon.

⧍ā§Ļā§Ļā§Ž āϚāύ⧰ ⧍⧍ āĻ…āĻ•্āϟোāĻŦā§° āϤাā§°িāĻ–āϟো āĻ­াā§°āϤ⧰ āĻŦাāĻŦে ā§°āĻ™া āφāĻ–ā§°ā§° āĻĻিāύ āĻŦুāϞি āĻ—āĻŖ্āϝ āϕ⧰া āĻšāϝ় āĻ•াā§°āĻŖ āχāϝ়াāϤ ā§°াāώ্āϟ্ā§°ীāϝ় āĻĒāϤাāĻ•া āĻ›āĻĒা āϕ⧰ি āϚāύ্āĻĻ্ā§° āĻĒ্ā§°āĻ­াā§ą āĻ…āύুāϏāύ্āϧাāύ (MIP) āϏāĻĢāϞāϤাā§°ে āĻ•āĻĸ়িāϝ়াāχ āĻ…āύা āϚāύ্āĻĻ্ā§°āϝাāύ-I āĻ‰ā§ŽāĻ•্āώেāĻĒāĻŖ āϕ⧰া āĻšāϝ়। āϚāύ্āĻĻ্ā§°āϝাāύ-Iā§° āĻĒā§°া āĻāĻŽāφāχāĻĒি āĻŦাāĻšিā§° āĻšৈ āϚāύ্āĻĻ্ā§°āϤ āĻĻুā§°্āϘāϟāύাāĻ—্ā§°āϏ্āϤ āĻšৈ āϚāύ্āĻĻ্ā§°āϤ āϤ্ā§°িā§°ংāĻ—āϟো āĻĒেāϞোā§ąাā§° āϞāĻ—ে āϞāĻ—ে āϏāĻ•āϞো āĻ­াā§°āϤীāϝ়ā§° āĻŦাāĻŦে āϏোāĻŖাāϞী āĻŽুāĻšূā§°্āϤ āĻšৈ āĻĒā§°িāϞ।


h) Why are we proud of ISRO?

 āχāϛ⧰োāĻ• āϞৈ āφāĻŽি āĻ•িāϝ় āĻ—ৌā§°ā§ą āϕ⧰ো?

 Ans We are proud of ISRO because it successfully detected the presence of water on the moon with the Chandrayaan-I mission. This mission marked a significant achievement for the Indian Space Research Organisation, which started India's space program in 1969. With Chandrayaan-I, ISRO became the sixth organization in the world to send a spacecraft to the moon, a moment of pride for all Indians.

āφāĻŽি āχāϛ⧰োāĻ• āϞৈ āĻ—ৌā§°ā§ąাāύ্āĻŦিāϤ āĻ•াā§°āĻŖ āχ āϚāύ্āĻĻ্ā§°āϝাāύ-I āĻ…āĻ­িāϝাāύ⧰ āϜ⧰িāϝ়āϤে āϚāύ্āĻĻ্ā§°āϤ āĻĒাāύীā§° āωāĻĒāϏ্āĻĨিāϤি āϏāĻĢāϞāϤাā§°ে āϧ⧰া āĻĒেāϞাāχāĻ›িāϞ। āĻāχ āĻ…āĻ­িāϝাāύে ⧧⧝ā§Ŧ⧝ āϚāύāϤ āĻ­াā§°āϤ⧰ āĻŽāĻšাāĻ•াāĻļ āĻ•াā§°্āϝāϏূāϚী āφ⧰āĻŽ্āĻ­ āϕ⧰া āĻ­াā§°āϤীāϝ় āĻŽāĻšাāĻ•াāĻļ āĻ—ā§ąেāώāĻŖা āϏংāϏ্āĻĨাā§° āĻŦাāĻŦে āĻāĻ• āωāϞ্āϞেāĻ–āϝোāĻ—্āϝ āϏাāĻĢāϞ্āϝ āĻšিāϚাāĻĒে āĻĒā§°িāĻ—āĻŖিāϤ āĻšৈāĻ›িāϞ।āϚāύ্āĻĻ্ā§°āϝাāύ-āĻĒ্ā§°āĻĨāĻŽā§° āϜ⧰িāϝ়āϤে āχāϛ⧰’āχ āϚāύ্āĻĻ্ā§°āϞৈ āĻŽāĻšাāĻ•াāĻļāϝাāύ āĻĒ্ā§°েā§°āĻŖ āϕ⧰া āĻŦিāĻļ্āĻŦā§° āώāώ্āĻ  āϏংāϏ্āĻĨা āĻšিāϚাāĻĒে āĻĒā§°িāĻ—āĻŖিāϤ āĻšৈāĻ›িāϞ, āϝিāϟো āϏāĻ•āϞো āĻ­াā§°āϤীāϝ়ā§° āĻŦাāĻŦে āĻ—ৌā§°ā§ąā§° āĻŽুāĻšূā§°্āϤ।



i) Which is the only satellite of the earth?

āĻĒৃāĻĨিā§ąীā§° āĻāĻ•āĻŽাāϤ্ā§° āωāĻĒāĻ—্ā§°āĻš āĻ•োāύāϟো?

Ans  The moon is the only satellite of the Earth.

āϚāύ্āĻĻ্ā§° āĻĒৃāĻĨিā§ąীā§° āĻāĻ•āĻŽাāϤ্ā§° āωāĻĒāĻ—্ā§°āĻš।


j) Is there water on the moon?

 āϚāύ্āĻĻ্ā§°āϤ āĻĒাāύী āφāĻ›ে āύেāĻ•ি?

Ans Yes, there is water on the moon.

āĻšāϝ়, āϚāύ্āĻĻ্ā§°āϤ āĻĒাāύী āφāĻ›ে।



2. Fill up the blanks:

āĻ–াāϞী āĻ াāχāĻ–িāύি āĻĒূā§°āĻŖ āϕ⧰āĻ•:

    

a) The moon revolves around the Earth in one month.

b) The success of Chandrayaan-I is the success of the scientists of ISRO.

c) ISRO started the space programme of India in 1969.

d) ISRO is the world'sn sixth organization sending spacecraft to the moon.

e) Once Sriharikota was a  paradise  for birds.

f) Rockets are launched from the spaceport.

g) Sriharikota lies in the Bay of Bengal.

h) The name of the rocket sent up on 10th August, 1979 was SLV-3.

i) PSLV-C11 carried the spacecraft Chandrayaan-I.

j) The mission of Chandrayaan-I was to collect information on the moon.


(iii) Use of the word 'Port':


- Aeroplanes fly from airport.

- Ships sail from seaport.

- Spacecrafts are sent from spaceport.


(iv) Read the sentences and mark 'true' or 'false':


(a) There is no water on the moon. -False

(b) Chandrayaan-I was a mission to the moon. - True

(c) Chandrayaan-I was a failure. -False

(d) The moon is a moving body in the sky. - True

(e) The scientists of ISRO were successful. - True

(f) It is not sure whether there is water on the moon. - False


(āĻ•) āϚāύ্āĻĻ্ā§°āϤ āĻĒাāύী āύাāĻĨাāĻ•ে। -āĻŽিāĻ›া

(āĻ–) āϚāύ্āĻĻ্ā§°āϝাāύ-āĻŽāχ āϚāύ্āĻĻ্ā§°āϞৈ āĻŽিāĻ›āύ āφāĻ›িāϞ। - āϏঁāϚা

(āĻ—) āϚāύ্āĻĻ্ā§°āϝাāύ-āĻŽāχ āĻŦ্āϝ⧰্āĻĨ āĻšৈāĻ›িāϞ। -āĻŽিāĻ›া

(āϘ) āϚāύ্āĻĻ্ā§° āφāĻ•াāĻļāϤ āĻĨāĻ•া āĻāϟা āϚāϞāύ্āϤ āĻŦāϏ্āϤু। - āϏঁāϚা

(āĻ™) āχāϛ⧰োā§° āĻŦিāϜ্āĻžাāύীāϏāĻ•āϞ āϏāĻĢāϞ āĻšৈāĻ›িāϞ। - āϏঁāϚা

(āϚ) āϚāύ্āĻĻ্ā§°āϤ āĻĒাāύী āφāĻ›ে āύে āύাāχ āϏেāϝ়া āύিāĻļ্āϚিāϤ āύāĻšāϝ়। - āĻŽিāĻ›া


 

Type- Bikash Bora

Check: Himashree Bora. (Date: 06-06-2022)

Check - Mukesh Borah

Post ID: DABP002216