Solar Nebula

A nebula is:

• A cloud of ice
• A cloud of dust and gas
• A cloud of just gas
• A cloud of just dust

The Solar Nebular Theory is:

• A theory on how the Milky Way galaxy was formed

• A theory on how the universe was formed

• A theory on how the solar system will be destroyed

• A theory on how the solar system was formed

The most abundant gases in a nebula (the beginnings of our Solar System) are:

• Hydrogen & Oxygen

• Nitrogen & Oxygen

• Hydrogen & Helium

• Oxygen & Helium

The group of inner planets are known as:

• The Terrestrial/Rocky Planets

• The Jovian/Gas Giants

• The Outer Planets

• The Hallow Planets

The group of outer planets are known as:

• The Terrestrial/Rocky Planets

• The Jovian/Gas Giants

• The Inner Planets

• The Rocky Planets

What percentage of the nebula will the Sun accumulate (take up)?

• 99%

• 1%

• 50%

• 75%

A nebula starts to collapse because of:

• A nearby star shining it's light
• A passing spaceship
• A passing comet
• Gravity

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Why did the lighter elements stay in the Gas Giants?

• Just because the solar wind does not affect these planets

• Because they less dense

• Because the solar wind does not affect these planets AND their own gravity is strong enough

• Just because their own gravity is strong enough

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

As the solar system continued to evolve, material in the disk collided with other material and grew into planetesimals, then protoplanets, and then planets. This process of growth by collision created a lot of heat, melting the early Earth. Growth by collision is called ___.

• differentiation

• accretion

• adsorption

• kinetic molecular theory

Answer explanation

How do the sizes of the inner planets compare to the sizes of the outer planets?

• The inner planets are larger.
• The outer planets are smaller.
• There is no size difference between the inner and outer planets.
• The inner planets are smaller.

Tags

NGSS.MS-ESS1-3