Geo or Helio
Earth in the Middle
Sun Centered
Who helped?
Vocab know how
100

This solar system model has the Earth in the center

Geocentric?

100

This is the prefix meaning Earth

Geo?

100

This prefix means Sun

Helio

100

This astronomer was the first to propose the Heliocentric solar system to Europe

Copernicus?

100

Geo meaning

Earth

200

This solar system model relied on spheres that all planets were tethered to

geocentric

200

The geocentric model had this daily light orbiting the Earth, not the other way around.

the sun

200

Because of the heliocentric model we know this is the only thing orbiting the Earth

the moon

200

This heliocentric astronomer spotted 4 moons going around Jupiter. Destroying the geocentric theory finally.

Galileo

200

Helio meaning

Sun

300

This solar system model was heavily favored by ancient astronomers.

Geocentric

300

According to Aristotle the planets moved around Earth in this perfect shape

circle?

300

Thanks to Kepler we now know the planets move in this oval like shape

an ellipse

300

 This heliocentric astronomer found the planets moved in ellipses, and got a space telescope named after him.

Kepler

300

Centric meaning

center

400

Galielo was arrested for supporthing this solar system model

Heliocentric

400

the geocentric model had even these far off lights going around the Earth

other stars

400

This tube like tool has been helping modern astronomers better understand our universe without leaving the planet

Telescope

400

This astronomer was best known for supporting the Geocentric model. Say it carefully or you get Mickey Mouse's dog.

Plato

400

An object that goes around a large object, either natural or man made

satellite

500

This solar system model was proposed by Nicholas Copernicus. Or so we've been told.

Heliocentric

500

This is the only thing to orbit the Earth in both models

The moon

500

Thanks to Isaac Newton we know this force is what helps hold the planets in their orbit, and hold us to the ground

Gravity

500

This geocentric astronomer suggested that the planets actually move on smaller circles in their orbits

Ptolemy

500

This shape

ellipse