CBSE Class 8 Annual Assessment

Annual assessment for Class 8 students under CBSE, focusing on advanced concepts in core subjects to prepare for higher secondary education.

Science and Curiosity — Class 8 English

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English · 5 chapters
Summary, key terms, important questions and a practice quiz with AI diagnosis for each.

Chapter 5: Science and Curiosity

Summary

Unit 5 of Poorvi celebrates scientific curiosity, observation and discovery. Its main prose reading is “Feathered Friend” by Arthur C. Clarke, set on a space station under construction. A construction worker named Sven Olsen brings a small yellow canary, Claribel, to live among the crew, and the bird thrives in zero gravity, delighting everyone with her cheerful trills. One morning Claribel is found collapsed, claws in the air. The crew tries to revive her with oxygen and she briefly recovers, only to faint again. The narrator suddenly recalls how miners once carried canaries underground to warn them of poisonous gas, and realises the station’s air supply has gone wrong. He alerts the engineer, who discovers that the second alarm circuit had not yet been connected. The bird’s collapse becomes an early warning that saves the whole crew. The story shows how curiosity, observation and a little knowledge of the past can prevent disaster, and how even a small creature can play a vital role. The unit also includes the poem “Magnifying Glass”, about seeing the small wonders of the world up close, and a biography, “The Beam of Light that Lit the Path for Women in Indian Science”, honouring pioneering Indian women scientists. Together the readings inspire wonder, careful observation and a scientific way of thinking.

Feathered Friend by Arthur C. Clarke (prose)Observation and scientific reasoningThe canary-in-a-coal-mine idea“Magnifying Glass” (poem)Women pioneers in Indian scienceCuriosity, discovery and wonder

Key terms

“Feathered Friend”
A science-fiction story by Arthur C. Clarke set on a space station, where a canary warns the crew of bad air.
Claribel
The small yellow canary whose collapse acts as an early warning of a failing air supply, saving the crew.
Sven Olsen
The construction worker who brings Claribel aboard the space station and cares for her.
Canary in a coal mine
The old miners’ practice of using canaries to detect poisonous gas; the key idea that solves the story’s crisis.
“Magnifying Glass” (poem)
A poem about looking closely at small things and discovering the hidden wonders of the natural world.
Scientific curiosity
The habit of observing, questioning and reasoning that runs through the whole unit.

Important questions

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Term“Feathered Friend”
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Practice quiz

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Class 8 English — Science and Curiosity (Practice Quiz)

10 Qs · ~10 min