FORMATION OF SOLAR SYSTEM

Front

A nebula is:

Back

A cloud of dust and gas

Front

The most abundant gases in a nebula are: Hydrogen & Oxygen, Nitrogen & Oxygen, Hydrogen & Helium, Oxygen & Helium

Back

Hydrogen & Helium

Front

A nebula starts to collapse because of:

Back

Gravity

Front

As a nebula collapses it also begins:

Back

Rotate

Front

A nebula collapses down into a disk known called:

Back

An accretion disk

Front

What forms in the very center of the accretion disk?

Back

A protostar or early star

Front

What is forming in the accretion disk away from the center?

Back

Planetismals or early planets

Front

The group of inner planets are known as:

Back

The Terrestrial (rocky) Planets

Front

The group of outer planets are known as: The Terrestrial Planets, The Gas Giants, The Inner Planets, The Rocky Planets

Back

The Gas Giants

Front

How long ago did these nebular processes start?

Back

4.6 billion years ago