Intro to the Solar System

What model is where the earth is in the middle of our universe?

• Heliocentric Model
• Geocentric Model
• Moon phases
• Tidal Phases

What Model is where the sun is the center of the universe?

• Geocentric
• Heliocentric
• Earth's rotations
• Earth's planets

Ptolemy's view of the universe

• Galaxy
• Geocentric
• Astonomy
• Heliocentric

Why did people believe in the Geocentric vs the Heliocentric solar system?

• Geocentric system had been around for a LONG time.
• People don't like change.
• There wasn't enough proof  to support the Heliocentric system.
• all of these answers are correct.

This image shows the:

• Geocentric Solar System
• Heliocentric Solar System

What model does this represent?

• Geocentric 
• Heliocentric 

  What does "geo-" mean?

• Earth
• sun
• Center

What does "helios" mean?

• Earth
• center of
• sun
• moon

This person was the first to use a telescope to make observations in the sky -

• Aristotle
• Ptolemy
• Copernicus
• Galileo

A force of attraction between objects that is due to their masses. 

• Solar Flare
• Orbit
• Gravity
• Centripetal Force