Chapter 4
Chadrayan -I: A mission to the moon
1. Answer the following: ( āϤāϞāϤ āĻĻিāϝ়া āĻāĻĨাāĻŦোā§°ā§° āĻāϤ্āϤ⧰ āĻĻিāϝ়āĻ )
a) What is the difference between a satellite and a spacecraft?
āĻāĻĒāĻ্ā§°āĻš āĻā§°ু āĻŽāĻšাāĻাāĻļāϝাāύ⧰ āĻŽাāĻāϤ āĻĒাā§°্āĻĨāĻ্āϝ āĻি?
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.
āĻāĻĒāĻ্ā§°āĻš āĻā§°ু āĻŽāĻšাāĻাāĻļāϝাāύ⧰ āĻĒাā§°্āĻĨāĻ্āϝ āĻš’āϞ āĻāĻĒāĻ্ā§°āĻš āĻĒৃāĻĨিā§ąীā§° āĻাā§°িāĻāĻĢাāϞে āĻূā§°ি āĻĢুā§°ে, āĻāύāĻšাāϤে āĻŽāĻšাāĻাāĻļāϝাāύ āĻĒৃāĻĨিā§ąীā§° āĻĒā§°া āĻঁāϤ⧰āϤ āĻŽāĻšাāĻাāĻļāϞৈ āϝাāϤ্ā§°া āĻā§°ে
b) How many missions to the moon have been carried out so far?
āĻāϤিāϝ়াāϞৈāĻে āĻāύ্āĻĻ্ā§°āϞৈ āĻিāĻŽাāύāĻা āĻŽিāĻāύ āϏāĻŽ্āĻĒāύ্āύ āĻšৈāĻে?
Ans: So far, there have been sixty-eight missions to the moon.āĻ
āϤিāϝ়াāϞৈāĻে āĻāύ্āĻĻ্ā§°āϞৈ āĻāĻ āώāώ্āĻ িāĻা āĻ āĻিāϝাāύ āĻšৈāĻে।
c) Where is Sriharikota?
āĻļ্ā§°ীāĻšā§°িāĻোāĻা 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§°িāĻোāĻা āĻ āύ্āϧ্ā§° āĻĒ্ā§°āĻĻেāĻļā§° āĻĒূāĻŦ āĻāĻĒāĻূāϞāϤ āĻেāύ্āύাāĻā§° āĻĒā§°া āĻĒ্ā§°াāϝ় ā§§ā§Ļā§Ļ āĻিāϞোāĻŽিāĻাā§° āύিāϞāĻāϤ āĻŦংāĻ āĻāĻĒāϏাāĻā§°āϤ āĻ ā§ąāϏ্āĻĨিāϤ āĻāĻা āĻĻ্āĻŦীāĻĒ।
d) How many Indian scientific instruments were there in the Chandrayan-I?
āĻāύ্āĻĻ্ā§°াāϝ়āĻŖ-āĻĒ্ā§°āĻĨāĻŽāϤ āĻিāĻŽাāύ āĻাā§°āϤীāϝ় āĻŦৈāĻ্āĻাāύিāĻ āϝāύ্āϤ্ā§° āĻāĻিāϞ?
Ans: There were five Indian scientific instruments in Chandrayaan-I.
āĻāύ্āĻĻ্ā§°āϝাāύ-āĻĒ্ā§°āĻĨāĻŽāϤ āĻĒাঁāĻāĻা āĻাā§°āϤীāϝ় āĻŦৈāĻ্āĻাāύিāĻ āϝāύ্āϤ্ā§° āĻāĻিāϞ।
e) Who was the first man to walk on the moon?
āĻāύ্āĻĻ্ā§°āϤ āĻোāĻ āĻāĻĸ়া āĻĒ্ā§°āĻĨāĻŽ āĻŽাāύুāĻš āĻোāύ āĻāĻিāϞ?
Ans: Neil Armstrong was the first man to walk on the moon.
āĻāύ্āĻĻ্ā§°āϤ āĻোāĻ āĻāĻĸ়া āĻĒ্ā§°āĻĨāĻŽāĻāύ āĻŦ্āϝāĻ্āϤি āĻāĻিāϞ āύীāϞ āĻā§°্āĻŽāώ্āĻ্ā§°ং।
f) Which instrument dropped the National flag on the moon?
āĻোāύāĻো āĻŦাāĻĻ্āϝāϝāύ্āϤ্ā§°āĻ āĻāύ্āĻĻ্ā§°āϤ ā§°াāώ্āĻ্ā§°ীāϝ় āĻĒāϤাāĻা āĻĒেāϞাāĻ āĻĻিāϞে?
Ans: The instrument that dropped the National Flag on the moon was the Moon Impact Probe (MIP).
āĻāύ্āĻĻ্ā§°āϤ ā§°াāώ্āĻ্ā§°ীāϝ় āĻĒāϤাāĻা āύিāĻ্āώেāĻĒ āĻā§°া āϝāύ্āϤ্ā§°āĻো āĻāĻিāϞ āĻŽুāύ āĻāĻŽāĻĒেāĻ্āĻ āĻĒ্ā§°’āĻŦ (MIP)।
g) Why 22nd October, 2008 is a Red Latter Day for National flag on the moon?
⧍ā§Ļā§Ļā§Ž āĻāύ⧰ ⧍⧍ āĻ āĻ্āĻোāĻŦā§°āϤ āĻāύ্āĻĻ্ā§°āϤ ā§°াāώ্āĻ্ā§°ীāϝ় āĻĒāϤাāĻাā§° āĻŦাāĻŦে ā§°āĻা āĻāĻā§° āĻĻিā§ąāϏ āĻিāϝ়?
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 āĻāύ⧰ ⧍⧍ āĻ āĻ্āĻোāĻŦā§° āϤাā§°িāĻāĻো āĻাā§°āϤ⧰ āĻŦাāĻŦে ā§°āĻা āĻāĻā§°ā§° āĻĻিāύ āĻŦুāϞি āĻāĻŖ্āϝ āĻā§°া āĻšāϝ় āĻাā§°āĻŖ āĻāϝ়াāϤ ā§°াāώ্āĻ্ā§°ীāϝ় āĻĒāϤাāĻা āĻāĻĒা āĻā§°ি āĻāύ্āĻĻ্ā§° āĻĒ্ā§°āĻাā§ą āĻ āύুāϏāύ্āϧাāύ (MIP) āϏāĻĢāϞāϤাā§°ে āĻāĻĸ়িāϝ়াāĻ āĻ āύা āĻāύ্āĻĻ্ā§°āϝাāύ-I āĻā§āĻ্āώেāĻĒāĻŖ āĻā§°া āĻšāϝ়। āĻāύ্āĻĻ্ā§°āϝাāύ-Iā§° āĻĒā§°া āĻāĻŽāĻāĻāĻĒি āĻŦাāĻšিā§° āĻšৈ āĻāύ্āĻĻ্ā§°āϤ āĻĻুā§°্āĻāĻāύাāĻ্ā§°āϏ্āϤ āĻšৈ āĻāύ্āĻĻ্ā§°āϤ āϤ্ā§°িā§°ংāĻāĻো āĻĒেāϞোā§ąাā§° āϞāĻে āϞāĻে āϏāĻāϞো āĻাā§°āϤীāϝ়ā§° āĻŦাāĻŦে āϏোāĻŖাāϞী āĻŽুāĻšূā§°্āϤ āĻšৈ āĻĒā§°িāϞ।
h) Why are we proud of ISRO?
āĻāĻā§°োāĻ āϞৈ āĻāĻŽি āĻিāϝ় āĻৌā§°ā§ą āĻā§°ো?
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.
āĻāĻŽি āĻāĻā§°োāĻ āϞৈ āĻৌā§°ā§ąাāύ্āĻŦিāϤ āĻাā§°āĻŖ āĻ āĻāύ্āĻĻ্ā§°āϝাāύ-I āĻ āĻিāϝাāύ⧰ āĻā§°িāϝ়āϤে āĻāύ্āĻĻ্ā§°āϤ āĻĒাāύীā§° āĻāĻĒāϏ্āĻĨিāϤি āϏāĻĢāϞāϤাā§°ে āϧ⧰া āĻĒেāϞাāĻāĻিāϞ। āĻāĻ āĻ āĻিāϝাāύে ⧧⧝ā§Ŧ⧝ āĻāύāϤ āĻাā§°āϤ⧰ āĻŽāĻšাāĻাāĻļ āĻাā§°্āϝāϏূāĻী āĻā§°āĻŽ্āĻ āĻā§°া āĻাā§°āϤীāϝ় āĻŽāĻšাāĻাāĻļ āĻā§ąেāώāĻŖা āϏংāϏ্āĻĨাā§° āĻŦাāĻŦে āĻāĻ āĻāϞ্āϞেāĻāϝোāĻ্āϝ āϏাāĻĢāϞ্āϝ āĻšিāĻাāĻĒে āĻĒā§°িāĻāĻŖিāϤ āĻšৈāĻিāϞ।āĻāύ্āĻĻ্ā§°āϝাāύ-āĻĒ্ā§°āĻĨāĻŽā§° āĻā§°িāϝ়āϤে āĻāĻā§°’āĻ āĻāύ্āĻĻ্ā§°āϞৈ āĻŽāĻšাāĻাāĻļāϝাāύ āĻĒ্ā§°েā§°āĻŖ āĻā§°া āĻŦিāĻļ্āĻŦā§° āώāώ্āĻ āϏংāϏ্āĻĨা āĻšিāĻাāĻĒে āĻĒā§°িāĻāĻŖিāϤ āĻšৈāĻিāϞ, āϝিāĻো āϏāĻāϞো āĻাā§°āϤীāϝ়ā§° āĻŦাāĻŦে āĻৌā§°ā§ąā§° āĻŽুāĻšূā§°্āϤ।
i) Which is the only satellite of the earth?
āĻĒৃāĻĨিā§ąীā§° āĻāĻāĻŽাāϤ্ā§° āĻāĻĒāĻ্ā§°āĻš āĻোāύāĻো?
Ans The moon is the only satellite of the Earth.
āĻāύ্āĻĻ্ā§° āĻĒৃāĻĨিā§ąীā§° āĻāĻāĻŽাāϤ্ā§° āĻāĻĒāĻ্ā§°āĻš।
j) Is there water on the moon?
āĻāύ্āĻĻ্ā§°āϤ āĻĒাāύী āĻāĻে āύেāĻি?
Ans Yes, there is water on the moon.
āĻšāϝ়, āĻāύ্āĻĻ্ā§°āϤ āĻĒাāύী āĻāĻে।
2. Fill up the blanks:
āĻাāϞী āĻ াāĻāĻিāύি āĻĒূā§°āĻŖ āĻā§°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) āĻāύ্āĻĻ্ā§°āϤ āĻĒাāύী āύাāĻĨাāĻে। -āĻŽিāĻা
(āĻ) āĻāύ্āĻĻ্ā§°āϝাāύ-āĻŽāĻ āĻāύ্āĻĻ্ā§°āϞৈ āĻŽিāĻāύ āĻāĻিāϞ। - āϏঁāĻা
(āĻ) āĻāύ্āĻĻ্ā§°āϝাāύ-āĻŽāĻ āĻŦ্āϝ⧰্āĻĨ āĻšৈāĻিāϞ। -āĻŽিāĻা
(āĻ) āĻāύ্āĻĻ্ā§° āĻāĻাāĻļāϤ āĻĨāĻা āĻāĻা āĻāϞāύ্āϤ āĻŦāϏ্āϤু। - āϏঁāĻা
(āĻ) āĻāĻā§°োā§° āĻŦিāĻ্āĻাāύীāϏāĻāϞ āϏāĻĢāϞ āĻšৈāĻিāϞ। - āϏঁāĻা
(āĻ) āĻāύ্āĻĻ্ā§°āϤ āĻĒাāύী āĻāĻে āύে āύাāĻ āϏেāϝ়া āύিāĻļ্āĻিāϤ āύāĻšāϝ়। - āĻŽিāĻা
Type- Bikash Bora
Check: Himashree Bora. (Date: 06-06-2022)
Check - Mukesh Borah
Post ID: DABP002216