Chapter 30.1 Flashcards
Earth is considered the center and everything else revolves around it
Geocentric Model
The moon revolves around Earth and that Earth and the other planets revolve around the Sun
Heliocentric Model
Planets in orbit around stars other than the Sun
Extrasolar Planets
Who developed the geocentric model
Ptolemy
Who developed the heliocentric model
Nicholas Copernicus
Who provided evidence to support Copernicus’s model by using a telescope
Galileo Galilei
Who discovered that planets travel around the Sun in an ellipse
Johannes Kepler
Do planets travel at different speeds in their orbit
Yes
What unit equals the average distance from Earth to the Sun (150 million km
Astronomical Unit
What are the planets that are similar to Earth known as
Terrestrial Planets
What are gas giants known as
Jovian Planets
Which planets are considered to be terrestrial planets
Mars, Venus, Mercury
Which planets are considered to be Jovian planets
Jupiter, Saturn, Uranus, Neptune
What are the planets within the asteroid belt called
Inner Planets
What are the planets beyond the asteroid belt called
Outer Planets
