Early Observers of the Solar System

What is in the center of the Heliocentric Model?

• Sun
• Comet 
• Jupiter
• Earth

What model does this represent?

• Geocentric 
• Heliocentric 

  What does "geo-" mean?

• Earth
• sun
• Center

This image shows the:

• Geocentric Solar System
• Heliocentric Solar System

Galileo used ______ to develop the heliocentric theory.

• predictions
• the scientific method
• theories
• guesses

A model of the solar system in which Earth and the other planets revolve around the SUN.

• Heliocentric
• Geocentric

What does "helios" mean?

• Earth
• center of
• sun
• moon

This person was a Greek philosopher who believed the universe centered around the Earth in a perfect circle

• Copernicus
• Ptolemy
• Aristotle
• Galileo

This person believed that planets move on small circles that move on larger circles

• Ptolemy
• Copernicus
• Galileo
• Aristotle

This person discovered moons on Jupiter, which helped to support the heliocentric theory 

• Aristotle
• Copernicus
• Ptolemy
• Galileo