Geocentric and heliocentric people and models

Geocentric and heliocentric people and models

By Biola Famimiko

ASTRONOMER' WORK

​wHAT DO THEY DO?

They study the objects in the sky, planets, stars, moons, solar systems and galaxies .

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Multiple Choice

What is an Astronomer?

• He studies houses

• He studies the Earth

• Studies the stars, planets, galaxies, and universe

• Studies circular objects

What is Geocentric Theory? ​

Geocentric theory is the belief that the Earth is in the center and the sun and the planets orbited it.

gEO- mEANS ​eARTH IN GReek/latin

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Multiple Choice

GEO MEANS WHAT?

• Planets

• Stars

• Earth

• Sun

1. Plato

2. Aristotle​

3. Ptolemy

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Famous Geocentric astronomers'​

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​Plato

​Aristotle

​Ptolemy

Believed that Earth is ​the center of the universe (Geocentric model)

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Believed the movement of stars and planets was circular but the movement is Ellipse

Believed Earth was the center of universe and describe Earth and planets as sphere ​

​Plato

​Aritotle

​Ptolemy

Multiple Choice

What did Ptolemy believe?

• Believed the sun was the center of the universe and believed the earth was a square

• Believed the Earth was the center of the universe and believed the earth was a square

• Believed the Earth was the center of the universe and believed the earth was a sphere

• Believed the sun was the center of the universe and believed the earth was a sphere

Heliocentric model

Heliocentric Theory

Helio in ​Greek means Sun, so Heliocentric means Sun centered

Heliocentric theory is the belief that the sun is the center of the universe and the Earth and stars orbit around it.

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Multiple Choice

What does Helio mean?

• Juice

• Stars

• Sun

• Earth

​Changed the viewpoint of geocentric theory. He developed the Heliocentric model

Nicolaus Copernicus ​

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​Know as the father of astronomy. He created the telescope and his observations of the planets supported the heliocentric theory

Galileo Galilei ​

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Studied the movement of planets. He discovered that the planets didn't move in a circular motion but in a elliptical motion.

​​Johannes Kepler

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Circular motion

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Ellipsis motion ​

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When the Earth spins in a circle on its axis. This motion causes day and night ​

Rotation ​

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When Earth spins around the sun. This takes 365 days. The motion causes seasons. ​

Revolution ​

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