Theories of the Universe

Front

What is the Heliocentric model?

Back

A model of the universe where the Sun is at the center and the planets revolve around it.

Front

What was Copernicus's theory?

Back

Copernicus proposed that the Sun is at the center of the universe, challenging the Earth-centered view.

Front

What does 'helios' mean?

Back

The Greek word 'helios' means 'sun'.

Front

What model of the solar system is shown in this picture?

Back

Heliocentric model.

Front

What is the Geocentric model?

Back

A model of the universe where Earth is at the center and all celestial bodies revolve around it.

Front

Who proposed the Heliocentric model?

Back

Nicolaus Copernicus.

Front

What is the significance of the Heliocentric model?

Back

It marked a major shift in scientific thought, leading to the Copernican Revolution.

Front

What are elliptical orbits?

Back

Elliptical orbits are the oval-shaped paths that planets follow around the Sun.

Front

What did Galileo contribute to the Heliocentric theory?

Back

Galileo provided observational evidence supporting the Heliocentric model through his telescope.

Front

What is retrograde motion?

Back

Retrograde motion is the apparent backward movement of planets as observed from Earth.