Main Idea Worksheet 5 – Solved
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1. Sir Isaac Newton and Gravity
Summarize this paragraph in one sentence. Be specific and clearly explain the main idea.
*Sir Isaac Newton discovered the law of universal gravitation after observing an apple fall from a tree, leading him to conclude that objects are pulled toward Earth by a force he called gravity, which he later formalized in his book The Principia.*
An appropriate title: *The Origin of Newton’s Theory of Gravity*
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2. Einstein’s Letter and the Atomic Bomb
Summarize this paragraph in one sentence. Be specific and clearly explain the main idea.
*Albert Einstein and other scientists warned President Roosevelt about Nazi atomic research, prompting the U.S. to develop the atomic bomb, which was used in Japan, and later led Einstein to regret signing the letter as his greatest mistake.*
An appropriate title: *Einstein’s Regret: The Letter That Started the Atomic Age*
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3. Copernicus and the Heliocentric Model
Summarize this paragraph in one sentence. Be specific and clearly explain the main idea.
*Nicolaus Copernicus revolutionized astronomy by proposing a heliocentric model of the universe, but delayed publishing his work due to fear of conflict with the Catholic Church, which did not accept it until nearly three centuries later.*
An appropriate title: *Copernicus and the Revolution of the Universe*
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✔ Explanation of Solutions:
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Main Idea Focus: For each passage, I identified the central event or concept the author is emphasizing.
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Specificity: Each summary includes key details (people, events, dates) to ensure clarity and accuracy.
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Title Selection: Titles reflect the core theme of each passage while being concise and informative.
These answers help students practice identifying the main idea, summarizing effectively, and creating meaningful titles—key reading comprehension skills.
Parent Tip: Review the logic above to help your child master the concept of main idea worksheet for middle school.
