Chapter 30.1 Flashcards
considered the center and everything else revolves around it.
geocentric model
stated that the moon revolves around Earth and that Earth and the other planets revolve around the Sun.
heliocentric model
planets in orbit around the stars other than the Sun.
Extra-solar planets
who created the geocentric model?
Ptolemy
who created the heliocentric model?
Nicholas Copernicus
who provided evidence to support Copernicus model using a telescope?
Galileo Galilei
who discovered that the planets travel in a ellipse? (in an oval path)
Johannes Kepler
Yes or no: do planets travel at different speeds in their orbit?
yes
what unit equals the average distance from the Earth to the Sun?
Astronomical Unit (AU) (also about 150 million km)
what are the planets that are similar to Earth known as?
Terrestrial planets
What are the giant planets known as?
Jovian planets
how do you classify planets?
size, structure, and composition
Which planets are considered to be Terrestrial planets ?
Mercury, Venus, and Mars
Which planets are considered to be Jovian planets?
Jupiter, Saturn, Uranus, and Neptune
What are the planets called located outside of the asteroid belt?
outer planets
What are the planets called located between the Sun and the asteroid belt?
inner planets
Which planets are considered inner planets?
Mercury, Venus, Earth, and Mars
Which planets are considered outer planets?
Jupiter, Saturn, Uranus, and Neptune
The planets that are orbiting between the Sun and Earth are classified as?
inferior planets
The planets that orbit beyond Earths orbit is classified as?
Superior planets
Which planets are classified as inferior planets?
Mercury and Venus
Which planets are classified as superior planets?
Mars, Jupiter, Saturn, Uranus, and Neptune
