chapter 30.1 Flashcards
geocentric model
earth is considered the center and everything else revolves around it
heliocentric model
stated that the moon revolves around earth and that earth and the other planets revolve around the sun
extra-solar planet
are planets in orbit around stars other than the sun
who developed the geocentric model?
Ptolemy
who created the heliocentric model?
Nicholas Copernicus
who provided evidence to support Copernicus model with a telescope?
Galileo Galilei
who discovered that planets travel in an ellipse?
Johannes Kepler
true or false? do planets travel at different speeds in their orbit?
true
what equals the average distance from the earth to the sun? about 150 million km
Astronomical unit (AU)
what are the planets similar to earth known as?
Terrestrial planets
what are the giant planets 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
based on location what are the planets called within the asteroid belt?
Inner planets
based on location what are the planets called outside of the asteroid belt
Outer planets
