Copernican Revolution

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/copernican-revolution

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the proposed by?Nicolaus Copernicus
2. What is the key work published?'De revolutionibus orbium coelestium' in 1543
3. Why did Copernicus think the Earth wasn't the center?He saw that the old Earth‑centered model was very complicated and wanted a simpler, prettier explanation. He believed the Sun should be the main star in our solar system.
4. How did the new model explain the strange backward motion of planets?In the heliocentric view, Earth moves faster than the outer planets, so when Earth passes them, they look like they move backward in the sky.

Geocentric Model: A cosmological model with Earth at the universe's center, orbited by celestial bodies.
Heliocentric Model: A cosmological model with the Sun at the center, orbited by planets.
Paradigm Shift: A fundamental change in the basic concepts and experimental practices of a scientific discipline.
Epistemology: The theory of knowledge, especially with regard to its methods, validity, and scope.