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Talking of Space: MBOSE Class 11 English Supplementary notes
Get summaries, questions, answers, solutions, notes, extras, PDF of Class 11 Voices (English Supplementary reader textbook) chapter Talking of Space: Report on Planet Three by Arthur C Clarke, which is part of the syllabus of students studying under MBOSE (Meghalaya Board). These solutions, however, should only be treated as references and can be modified/changed.
If you notice any errors in the notes, please mention them in the comments
Summary
The story “Report on Planet Three” by Arthur C. Clarke is presented as a document deciphered by the Interplanetary Archaeological Commission from Mars, detailing Martian observations of Earth. Written during the Late Uranium Age of Martian civilisation, the report explores the scientific knowledge and perspectives of the Martians regarding Earth, highlighting their advanced astronomical capabilities and the mysteries they sought to uncover about their neighbouring planet.
The Martians, intrigued by Earth’s proximity and potential for life, discuss the planet’s various characteristics. Earth’s atmosphere, dense with oxygen, nitrogen, and water vapour, contrasts sharply with the thin, dry Martian atmosphere. The presence of large quantities of oxygen, which Martians find puzzling and potentially toxic, suggests a different chemical process at work, possibly linked to terrestrial life forms. Martian scientists speculate that Earth’s vast oceans, covering more than two-thirds of its surface, might host life, but the planet’s high gravity and frequent climatic extremes make this uncertain.
Observations reveal that Earth appears as a sickly blue-green crescent with its giant moon nearby. Due to its position relative to the Sun, Earth is best viewed as a morning or evening star from Mars. Despite the challenges of observing the planet, Martians have mapped its surface and noted its abundant water and thick atmosphere. They also consider the possibility of intelligent life unlikely, given the harsh conditions, including poisonous gases, high gravity, and violent weather patterns.
The report discusses the theoretical possibility of Earthly life forms, suggesting that if they exist, they would be robust, heavily armoured to withstand the planet’s gravity, and possibly residing in the oceans to avoid land-based hazards. The Martians also reflect on the idea of exploring Earth through spacecraft, acknowledging the potential of rocket propulsion to bridge the interplanetary gap.
Ultimately, the Martian report concludes that Earth is a hostile environment for life as they know it, though they remain open to future exploration to uncover its secrets.
Textual questions and answers
Answer these questions briefly
1. What is the most tantalising thing about Earth? Why is this so?
Answer: We cannot see it when it is closest because it is then between us and the Sun and its dark side is therefore turned towards us.
2. Why is the Earth described as being ‘sickly blue-green’?
Answer: The Earth is described as being ‘sickly blue-green’ due to its contrast in colour with the Moon, which is pure silvery-white. The term implies an unflattering appearance.
3. When can Earth be seen from Mars?
Answer: We have to wait until it is a morning or evening star.
4. What is the ‘violent controversy’ that has raged on Mars over centuries?
Answer: Whether the liquid on Earth is water.
5. Which physical feature on the Earth’s surface has been described as a ‘paradox’? Why?
Answer: The presence of mountains far higher than any that exist on Mars has been described as a paradox because Earth has a much higher gravity than Mars.
6. What has Martian research concluded about the possibility of intelligent life on Earth?
Answer: Martian research has concluded that the question of intelligent life on Earth must be regarded as settled and that Martians are the only rational beings in the Solar System.
7. Why is migration easier on Mars than on Earth?
Answer: On Mars, all mobile life forms can easily escape the winter by migration. There are no mountains or seas to bar the way. The small size of our world-as compared with Earth and the greater length of the year make such seasonable movements a simple matter, requiring an average speed of only some ten miles a day.
8. How are the Martians planning to unravel the last secrets of the Earth?
Answer: By building a spacecraft that can escape from Mars and head across the cosmic gulf towards our mysterious neighbour.
Answer these questions in a paragraph
1. What factors make the Earth a world of ‘violent climatic extremes’?
Answer: Its dense, moisture-laden atmosphere, high gravity, and closeness to the Sun make Earth a world of violent climatic extremes.
2. According to the Martians, if at all life forms were to exist on Earth, what would they be like?
Answer: If they exist at all, they must be extremely powerful and massively built to resist the high gravity, probably possessing many pairs of legs and capable only of slow movement. Their clumsy bodies must be covered with thick layers of protective armour to shield them from the many dangers they must face, such as storms, fire, and the corrosive atmosphere.
Answer these questions in detail
1. What is our belief about the possibility of life on Mars? What do the Martians believe about the possibility of life on Earth? Compare the two viewpoints.
Answer: Our belief about the possibility of life on Mars is largely speculative and based on scientific research. We are exploring Mars for any signs of past or present life, focusing on the planet’s history of water and its potential to support microbial life. The Martians, on the other hand, believe that the possibility of life on Earth is extremely poor due to the planet’s intense climatic conditions, poisonous atmosphere, and high gravity. They consider the presence of intelligent life highly unlikely. The two viewpoints contrast in their conclusions: we remain hopeful and curious about life on Mars, while Martians view Earth as largely inhospitable.
2. Does the Martian civilisation seem more advanced than ours on Earth? Give reasons to support your answer.
Answer: Yes, the Martian civilisation seems more advanced than ours on Earth. This is indicated by their ability to make precise astronomical observations, construct detailed maps of Earth’s surface, and analyze the composition of Earth’s atmosphere using spectroscopes. They have also developed advanced mathematical physics theories and are exploring the possibility of space travel using atomic energy. Phrases such as “development of new astronomical instruments,” “spectroscope has now solved this problem,” and “current work on rocket propulsion” support the view that Martian civilisation possesses advanced scientific and technological capabilities.
3. Why do you think that the author has written this story in the form of a report? Pick phrases from the text to support your answer.
Answer: The author has written this story in the form of a report to create a sense of scientific authenticity and objectivity. This format allows for a detailed and systematic presentation of observations and conclusions about Earth from a Martian perspective. Phrases such as “the translation is believed to be reasonably accurate,” “observations over a period of weeks,” “calculations indicate,” and “a brilliant piece of theoretical research” contribute to the report-like structure, emphasizing the analytical and factual tone of the narrative.
Writing
1. Write a note on Fire on Earth or The Importance of Ultraviolet Radiation for Martians.
Answer: Fire on Earth is a terrifying phenomenon known only in the laboratory on Mars. Many ordinary substances, when immersed in an atmosphere like that of Earth’s and heated to quite moderate temperatures, begin a violent and continuous chemical reaction which does not cease until they are completely consumed. During this process, intolerable quantities of heat and light are generated, together with clouds of noxious gases. This phenomenon, called ‘fire,’ makes it impossible for any possible form of life to exist on Earth.
2. The Romantics on Mars hope for evidence of life on Earth. Are you a Romantic? Do you hope for evidence of life on Mars? After reading this story, write a report on your point of view.
Answer: As a romantic thinker, I indeed hope for evidence of life on Mars. This story, presented as a report, gives an intriguing perspective on how Martians might view Earth and its potential for life. The Martians’ detailed observations and scientific reasoning reflect their advanced understanding and curiosity, much like our own.
The possibility of finding life on Mars has always been a fascinating concept. Despite the harsh conditions on Mars, with its thin atmosphere and extreme temperatures, the discovery of ancient water channels and seasonal methane emissions suggests that microbial life might have once existed, or could still exist, in subsurface environments.
My hope for evidence of life on Mars is driven by the potential to expand our understanding of biology and the origins of life. Discovering even the simplest life forms on Mars would profoundly impact our knowledge of the universe, indicating that life might be more common than we previously thought. It would also inspire further exploration and study, opening new frontiers for science and possibly providing insights into the future habitability of Mars for humans.
3. Assume that you are a Martian. Give details about:
a. The possibility of animals living in water on Earth
b. Flying in the Earth’s atmosphere
Answer: a. The possibility of animals living in water on Earth seems plausible. More than two-thirds of the planet is covered with liquid, likely water. The oceans may provide a less hostile environment compared to the land, shielding creatures from the high gravity and corrosive atmosphere. Animals in these oceans would not need to support their weight as much due to buoyancy, allowing for a variety of life forms to thrive underwater.
b. Flying in the Earth’s atmosphere appears unlikely due to the planet’s high gravity. Although the dense atmosphere might make flying easier, the powerful gravity would counteract this advantage, making sustained flight difficult. Creatures capable of aerial locomotion would need to be incredibly strong and efficient to overcome these challenges, and such adaptations seem improbable given the conditions described.
Extra fill in the blanks
1. The recent close approach of the planet Earth has revived ______ about the possibility of life there. (speculations/debates)
Answer: speculations
2. Earth’s day is just half an hour ______ than ours. (longer/shorter)
Answer: shorter
3. More than two-thirds of the planet Earth is covered with ______. (land/water)
Answer: water
4. The thick gaseous envelope surrounding the Earth contains large amounts of the poisonous element ______. (nitrogen/oxygen)
Answer: oxygen
5. Earth’s gravity is no less than ______ times as great as that on Mars. (two/three)
Answer: three
6. The ______ of oxygen in Earth’s atmosphere poses a major scientific problem. (absence/presence)
Answer: presence
7. Earth’s atmosphere also holds considerable quantities of ______ which form huge clouds. (water vapour/oxygen)
Answer: water vapour
8. The Sun’s ______ radiation, which reaches the surface of Mars almost unhindered, is essential to our well-being. (ultraviolet/infrared)
Answer: ultraviolet
9. Many ordinary substances, when immersed in an atmosphere like that of Earth’s and heated to moderate temperatures, begin a violent and continuous chemical reaction called ______. (oxidation/fire)
Answer: fire
10. It is hard to believe that any form of life could withstand the ______ that rage over vast areas of Earth. (fires/storms)
Answer: storms
11. Martian astronomers claim to have detected colour changes in certain areas of Earth which they attribute to the seasonal growth of ______. (plants/animals)
Answer: plants
12. The high gravity on Earth must have many important consequences, including ruling out any ______ forms of life. (small/large)
Answer: large
13. Earth’s Moon is some ______ times the diameter of the larger Martian satellites. (100/200)
Answer: 200
14. Observations of the night side of Earth have often revealed bright glowing areas where ______ is raging. (fire/lava)
Answer: fire
15. The concept of ______ animals is not taken seriously by competent biologists. (flying/running)
Answer: flying
16. The presence of ______ at both poles indicates that temperatures there are often quite comfortable. (volcanoes/icecaps)
Answer: icecaps
17. The glowing regions on Earth are much too variable to be ______. (cities/volcanoes)
Answer: cities
18. Martian scientists have christened the phenomenon of continuous chemical reaction under moderate temperatures as ______. (oxidation/fire)
Answer: fire
19. The Earth’s atmosphere is at least ______ times as dense as that of Mars. (five/ten)
Answer: ten
20. Terrestrial animals, if they exist, must be extremely ______ and massively built to resist the high gravity. (fragile/powerful)
Answer: powerful
21. Earth’s original surface features have not yet ______ away, indicating it is a young and primitive planet. (eroded/built)
Answer: eroded
22. Martians believe that life on Earth must be capable of surviving in a ______ and chemically reactive atmosphere. (neutral/poisonous)
Answer: poisonous
23. The presence of extensive icecaps at both poles of Earth indicates that they must be of immense ______. (temperature/thickness)
Answer: thickness
24. Martian astronomers missed seeing the lights of Earth’s cities by less than a ______ of the age of our planets. (millionth/billionth)
Answer: millionth
25. The Martian report on Earth ends with a reference to the destruction of Oasis City by a ______ blast. (meteor/nuclear)
Answer: nuclear
Extra true or False
1. The document deciphered for the Interplanetary Archaeological Commission dates from the Late Uranium Age of the Martian civilisation.
Answer: True
2. The translation of the Martian document is believed to be highly inaccurate.
Answer: False
3. Earth can be seen from Mars when it is a morning or evening star.
Answer: True
4. The Earth is described as a sickly blue-green because it is close to the Sun.
Answer: False
5. Martian astronomers believe that more than two-thirds of Earth is covered with liquid water.
Answer: True
6. Earth’s atmosphere is less dense than that of Mars.
Answer: False
7. Earth’s day is just half an hour longer than a day on Mars.
Answer: False
8. The presence of large amounts of oxygen in Earth’s atmosphere is considered normal by Martian scientists.
Answer: False
9. The planet Earth has a considerably higher temperature than Mars.
Answer: True
10. The intense gravity of Earth would make it impossible for large forms of life to exist.
Answer: True
11. Earth possesses mountains far higher than any that exist on Mars.
Answer: True
12. The presence of oxygen in Earth’s atmosphere is due to the same process found in some extinct Martian vegetation.
Answer: True
13. The ozone layer in Earth’s atmosphere blocks ultraviolet rays from reaching the surface.
Answer: True
14. Martian life forms would thrive on Earth due to the similar atmospheric conditions.
Answer: False
15. Fire is a phenomenon unique to Earth and does not occur naturally on Mars.
Answer: True
16. Bright glowing areas observed on the night side of Earth are definitely due to cities.
Answer: False
17. Earth is considered a world of violent climatic extremes by Martian scientists.
Answer: True
18. On Mars, all mobile life forms can easily escape the winter by migration.
Answer: True
19. Flying animals are considered a plausible form of life on Earth by Martian biologists.
Answer: False
20. Earth’s single giant moon produces significant tidal forces.
Answer: True
21. Martian researchers have concluded that the possibility of intelligent life on Earth is highly likely.
Answer: False
22. Martian astronomers detected colour changes on Earth attributed to the seasonal growth of plants.
Answer: True
23. Earth’s oceans are believed to be only a few feet deep by Martian scientists.
Answer: False
24. Martian biologists believe that any terrestrial animals must be capable of slow movement due to high gravity.
Answer: True
25. The Martian manuscript was damaged by a thermonuclear blast that destroyed Oasis City.
Answer: True
Extra questions and answers
1. What instrument solved the problem of determining the composition of Earth’s atmosphere?
Answer: The spectroscope.
2. How does the Earth’s atmosphere compare in density to that of Mars?
Answer: Earth’s atmosphere is at least ten times as dense as that of Mars.
Q. What is the primary component of Earth’s atmosphere that makes it poisonous to Martians?
Answer: Oxygen.
Q. What notable astronomical phenomenon hinders the observation of Earth when it is closest to Mars?
Answer: When Earth is closest to Mars, it is between Mars and the Sun, making its dark side face Mars.
Q. How much of Earth’s surface is covered with liquid?
Answer: More than two-thirds of Earth’s surface is covered with liquid.
Q. What is the Martian term used to describe Earth’s vast bodies of liquid?
Answer: Oceans.
Q. How do the poles of Earth differ in their icecap behavior compared to Mars?
Answer: Earth’s polar icecaps never melt completely, unlike Mars’ icecaps, which do during the summer.
Q. What is the speculated thickness of Earth’s oceans according to Martian astronomers?
Answer: Earth’s oceans may be as much as a thousand feet in thickness.
Q. Why is the Earth’s atmosphere described as thick and moisture-laden?
Answer: It contains large amounts of water vapor which forms huge clouds.
Q. What catastrophic phenomenon, unknown on Mars, is common on Earth due to its high oxygen levels?
Answer: Fire.
Q. How does the Earth’s high gravity affect the possibility of large life forms?
Answer: The high gravity would crush large life forms under their own weight.
Q. Why do Martian scientists dismiss the idea of flying animals on Earth?
Answer: The high gravity would make flying very difficult, despite the dense atmosphere.
Q. What makes the existence of life in Earth’s oceans seem plausible to Martians?
Answer: In the oceans, terrestrial animals would not have to fight the fierce gravity of their planet.
Q. What phenomenon caused by Earth’s moon creates challenging living conditions in its waters?
Answer: Tidal forces cause great movements in Earth’s waters, resulting in twice-daily flooding.
Q. What conclusion have Martians drawn about the possibility of intelligent life on Earth?
Answer: They believe there is no intelligent life on Earth, as all evidence is against it.
Q. What phenomenon makes Earth’s surface appear as a brilliant crescent when viewed from Mars?
Answer: When Earth is a morning or evening star, it appears as a brilliant crescent with its single giant Moon hanging beside it.
Q. Why are the Earth and its Moon described as having a striking contrast in color?
Answer: The Moon is a pure silvery-white, but the Earth is a sickly blue-green.
Q. What has the development of new astronomical instruments provided regarding Earth?
Answer: The development of new astronomical instruments has given us much more accurate information about the other planets, allowing discussions based on a firm scientific foundation.
Q. What is the evidence that Earth’s oceans might be as much as a thousand feet in thickness?
Answer: Some astronomers have suggested that Earth’s oceans might be as much as a thousand feet in thickness based on their observations.
Q. What is the effect of the ozone layer in Earth’s atmosphere?
Answer: The ozone layer almost completely blocks the ultraviolet rays of the Sun, preventing them from reaching the surface of the planet.
Q. What catastrophic phenomenon is common on Earth due to its high oxygen concentration?
Answer: Fire is a catastrophic phenomenon common on Earth due to its high oxygen concentration, leading to violent and continuous chemical reactions.
Q. How do Earth’s storms and electrical disturbances affect the possibility of life?
Answer: Earth’s violent climatic extremes, including storms and electrical disturbances, make it hard to believe that any form of life could withstand these natural convulsions.
Q. What challenges would terrestrial animals face due to the planet’s size and gravity?
Answer: Terrestrial animals would have to migrate at a speed of about fifty miles a day to escape the rigors of winter, which is unlikely due to high gravity and geographical barriers.
Q. What are the speculated characteristics of any potential terrestrial animals according to Martians?
Answer: If terrestrial animals exist, they must be extremely powerful and massively built to resist high gravity, probably possessing many pairs of legs and capable only of slow movement.
Q. What was the unfortunate coincidence mentioned by the translator at the end of the manuscript?
Answer: The unfortunate coincidence was that the missiles which ended Martian civilization were launched while the Greeks were storming Troy, with only a slight difference in the level of advancement of their weapons.
Q. What conclusions have Martian researchers drawn about the possibility of large life forms existing on Earth?
Answer: Martian researchers have concluded that Earth’s high gravity would rule out any large forms of life, as they would be crushed under their own weight. This high gravity must have many important consequences, not all of which can be foreseen. Additionally, the presence of mountains far higher than any on Mars is considered a paradox, suggesting that Earth is a young and primitive planet whose original surface features have not yet eroded away. Therefore, the prospects for large life forms on Earth appear extremely poor.
Q. How do the violent climatic extremes on Earth impact the possibility of life?
Answer: Earth’s violent climatic extremes make it hard to believe that any form of life could withstand these natural convulsions. Storms of unimaginable intensity have been observed, some accompanied by spectacular electrical disturbances easily detected by radio receivers on Mars. Additionally, the dense, moisture-laden atmosphere, high gravity, and closeness to the Sun contribute to these extreme conditions. Although the range of temperatures between terrestrial winter and summer is not as great as on Mars, this slight compensation does not outweigh the other handicaps, making life on Earth seem unlikely.
Q. What challenges do Martian researchers foresee in potential terrestrial animal migration compared to Martian migration?
Answer: Martian researchers foresee significant challenges for potential terrestrial animal migration. Earth’s sheer size and the shortness of its year, which lasts about six Martian months, mean that terrestrial beings would have to migrate at a speed of about fifty miles a day to escape the rigors of winter. This rate seems unlikely due to Earth’s high gravity and the presence of mountains and oceans, which would create insuperable barriers. In contrast, on Mars, all mobile life forms can easily escape winter by migration due to the planet’s smaller size, lack of geographical barriers, and the greater length of the year.
Q. What role does Earth’s single enormous moon play in affecting the planet’s conditions, according to Martian scientists?
Answer: According to Martian scientists, Earth’s single enormous moon, which is some two hundred times the diameter of even the larger of Mars’ two satellites, produces powerful effects on the planet. The moon’s gravitational attraction causes tidal forces, resulting in great movements in Earth’s waters and twice-daily flooding. These conditions make it difficult to believe that any creatures could exist either on land or in the sea, as the two would be constantly interchanging. This tidal effect is a significant factor in the Martian assessment of Earth’s hostile environment.
30. How do Martian researchers view the prospects for intelligent life on Earth, and what are their reasons?
Answer: Martian researchers view the prospects for intelligent life on Earth as extremely poor. They believe that the intensely poisonous atmosphere, high gravity, and violent climatic extremes make it unlikely for any form of intelligent life to exist. The presence of large quantities of reactive oxygen in the atmosphere poses a major scientific problem, and the phenomenon of fire, common on Earth, is another obstacle. Martians conclude that if any terrestrial animals exist, they must be extremely powerful, massively built, and capable only of slow movement, with clumsy bodies covered in thick protective armor. Thus, the question of intelligent life on Earth is regarded as settled, with Mars being the only planet with rational beings in the Solar System.
