chapter 30 flash cards
the solar system , earth is considered the center and everything else revolves it
Geocentric model
stated that the moon revolves around earth and that earth and the other planents revolve around the sun
Heliocentric model
are planets in orbit around the stars other than the sun
Extrasolar planets
who came up with the geocentric model
Greek philosopher Ptolemy
who came up with the heliocentric model
Nicholas Copermicus
who supported copermicus model by using a telescope
Galileo Gallel
who discovered the planets travel around the sun in ellipses
Johannes Kepler
true or false : do planets travel at different speeds in their orbit
True
how far is an astronomical unit (AU)
The average distance from earth to the sun is about 150 million km
what are the names of the planets similar to earth
Terrestrial planets
which planets are considered to be terrestrial planets
Venus, Mars, Mercury
what are the gas planets also known as
Jovian Planets
what are the names of the jovian planets
Jupiter,Neptune,Saturn,Uranus
what are the two names of the planets that are within and beyond the astrobelt
inner planets and outer planets
which planets are considered inner planets
Mercury, Venus,Mars,andEarth
