Chapter 30 vocab Flashcards
Earth-centric model of the solar system
Geocentric Model
Sun-centered model of the solar system
Heliocentric Model
Planets in orbit around stars other than the Sun
Extrasolar planets
Who created the geocentric model?
Greek Philosopher Ptolemy
Who came up with the heliocentric model?
Nicholas Copernicus
Who supported Copernicus’s model using his telescope?
Galileo Galilei
Who discovered that the planets travel around the Sun in a ellipse not a perfect circle.
Johannes Kepler
Do planets travel at different speeds in their orbit?
Yes
What is the average distance from the Earth to the Sun called?
A Astronomical unit
What are the planets called that are similar to Earth?
Terrestrial planets
What planet’s are known as Terrestrial planets?
Mercury, Venus, Mars
What are the gas giants known as?
Jovian planets
What are the Jovian planets?
Jupiter, Saturn, Neptune, Uranus
What are the planets known as when their location is between the Sun and the asteroid belt?
Inner Planets
What are the Inner planets?
Mars, Venus, Mercury, and Earth