Models of the Universe

Geocentrism states that:

• Saturn is at the center of the universe

• Jupiter at the center of the universe

• The sun is at the center of the universe

• The earth is at the center of the universe

Heliocentrism states that:

• the sun is the center

• the earth is the center

• the moon is the ceneter

• the mars is the ceneter

Ptolemy's model of the universe:

• None of these answers are correct

• Did not include the Earth at all

• Did not include the sun at all

• Tried to explain retrograde motion of the planets through the use of epicycles

What is the biggest difference between the Geocentric Model and the Heliocentric Model?

• the shape of the planets' orbits

• the center of the solar system

• the movement of the moon

• The movement of the sun

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

• Geocentric system had been around for a LONG time.

• There wasn't enough proof  to support the Heliocentric system.

• People don't like change.

• all of these answers are correct.

When planets move around the Sun they do not travel in a circle. Their orbit is an

• straight line

• square

• ellipse

• rectangle

 

Who discovered the Geocentric method?

• Copernicus

• Ptolemy

• The church

• The Earth its self

He proposed the first idea that the sun was in the centre of the universe, and the planet and celestial bodies revolved around the sun, in a circular path. He also proposed the idea that stars moved during the year. This theory never gained popularity in the ancient world.

• aristarchus

• aristotle

• galileo

• ptolemy

He was able to combine what he saw of the stars' movements with mathematics to predict the movement of the planets. In order to make his predictions true, he worked out that the planets must move in epicycles, smaller circles, and the Earth itself moved along an equant. None of this was true, but it made the math work for his predictions.

• Galileo

• Aristotle

• Eudoxus

• Ptolemy

Most known as the first astronomer to posit the idea of a heliocentric solar system. This is a system in which the planets and planetary objects orbit the sun.P

• Galileo

• Copernicus

• Ptolemy

• Brahe