7.50 (Solar System Theories)

Which term correct states that the earth is in the center of the solar system?

• Astrocentric

• Heliocentric

• Lunarcentric

• Geocentric

Which term correct states that the sun is in the center of the solar system?

• Astrocentric

• Heliocentric

• Lunarcentric

• Geocentric

Which ancient civilization developed the Geocentric Theory?

• Ancient Greece

• Ancient Rome

• Ancient Arabia

• Ancient China

What is a similarity between Ptolemy and Copernicus' theories of the solar system?

• Objects orbit in ellipses.

• Objects orbit the earth.

• Objects orbit in circles.

• The earth orbits the sun.

The Greek scholar observed the sky and created the Geocentric Theory was...

• Plato

• Ptolemy

• Socrates

• Aristotle

Who developed the Heliocentric Theory?

• Copernicus

• Ptolemy

• Kepler

• da Vinci

Which scientist developed the theory that planets moved in elliptical orbits?

• Kepler

• Copernicus

• Ptolemy

• da Vinci

If a planet moves in elliptical orbits, then planets...

• Move faster when they're close to the sun.

• Planets move at the same speed.

• Move slower when they're away from the sun.

• Planets are stationary.