ch.4 Our Solar System

Uranusis different from most other planets because it 

Whatdo all of the inner planets have in common?

The gas giants are composed mainly of _________ and helium

Whatforce pulled the solar system together out of a cloud of gas and dust?

We now know the heliocentric model of the solar system is correct, which has ____ at the center

The four inner planets are known as

Why does the moon appear to shine?

Thefive known ______________ in our solar system are Pluto, Eris, Ceres,Makemake, and Haumea.

The geocentric model of our solar system had what at the center of it

Planets were once thought to have circular orbits, we now know they are actually _____ 

The four outer planets are known as ?

Thesolar system is the sun, several kinds of smaller objects such ascomets and asteroids, and

AnAstronomical unit is?   

Maria on the moon’s surface were formed by ancient