Solar System, Inner Planets, Outer Planets

Because the outer planets are so large, they are often called

The amount of matter in an object is its......

The sun is a ________

Neptune's blue color comes from methane in its atmosphere.  True or False?

The inner planets that experience greenhouse effect are.......

Scientists think the solar system formed about 

All the inner planets have an atmosphere except......

The trapping of heat by the atmosphere.

Scientists use the ___________ to measure distances within the solar system

One day is the time it takes a planet to rotate on its _________

Objects made of loose balls of ice and rock, with long, narrow orbits, are called.....

T or F; Inertia and distance combine to keep Earth in orbit around the sun

____________ attracts all objects toward each other

All the outer planets have many _________, which range in number from 13 to greater than 60.

The solar system began to form as _______ pulled rock, ice, and gas together.

All but two planets in our solar system have a natural satellite, or ____________