Astro Unit 4 Solar System

The 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

A nebula is:

• A cloud of ice

• A cloud of dust and gas

• A large solar system

• A guess or idea

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

What forms in the very center of the accretion disk?

• A protosun
• A planet
• A protoplanet
• A planetesimal

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

How do stars form?

• Through the sun

• When a nebula collapses and nuclear fusion occurs

• Through a supernova

• Magic

Tags

NGSS.HS-ESS1-3

Why do red-shifted light spectrums from neighboring galaxies indicate the universe is expanding?

• Red light has the shortest wavelength on the visible light spectrum

• Red light has the longest wavelength on the visible light spectrum

• Red light has both long and short wavelengths on the visible light spectrum

• Red light has neither long, nor short wavelengths on the visible light spectrum

Tags

NGSS.HS-ESS1-2

The ______is between the orbits of Mars & Jupiter.

• solar system
• asteroid belt
• terrestrial planets
• photosphere

A force of attraction between any two objects is called _____________.

• static electricity 
• rotation
• gravity
• orbit

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What do the first four outer planets have in common? 

• They are much larger than Earth and are made mainly of Hydrogen and Helium 
• The are about the same size as Earth and are mostly made of Hydrogen and Helium
• They are must larger than Earth and are mainly made of iron
• They are the same size as Earth and are mainly made of iron

Tags

NGSS.MS-ESS1-3