Understanding Historical Models of the Universe

Who proposed the heliocentric model that challenged the geocentric view?

• Galileo Galilei

• Aristotle

• Ptolemy

• Nicholas Copernicus

In Aristotle's model, what was at the center of the universe?

• The Moon

• The Stars

• The Sun

• The Earth

What did Aristotle call the transparent spheres that carried the stars?

• Celestial domes

• Glass orbs

• Crystal spheres

• Heavenly shells

Who refined Aristotle's model to improve its accuracy?

• Galileo Galilei

• Johannes Kepler

• Ptolemy

• Isaac Newton

How long did it take for the heliocentric model to show observable benefits over the Aristotelian model?

• 50 years

• 100 years

• 300 years

• 200 years