Solar System Formation

A nebula collapses into a protoplanetary disk due to

• pulsars

• A passing spaceship

• A passing comet

• Gravity

Tags

NGSS.HS-PS2-4

As a nebula collapses it also begins to

• Expand

• Rotate

• Shake

• Turn to ice

What might have caused the nebula to begin to collapse?

• A nearby supernova or a passing star

• A passing asteroid

• A passing spaceship

• A passing comet

What forms in the very center of the protoplanetary disk?

• A protostar

• A planet

• A protoplanet

• A planetesimal

The remainder of the material in the protoplanetary disk that is not the protostar becomes

• Light

• Protostars

• Planetesimals

• Hydrogen

As the planetesimals move around they are

• Colliding and breaking apart
• Colliding and sticking together
• Colliding and bouncing around
• Breaking down into smaller pieces

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-1

Temperatures and pressures are so high that hydrogen atoms are forced together to make helium. What is this process?

• Nuclear fission

• Rotation

• Nuclear fusion

• Gravity

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

NGSS.HS-PS1-8

How old is our solar system?

• 4.6 billion years
• 13.8 billion years
• 6,000 years
• 15,000 years

Tags

NGSS.HS-ESS1-6

A cloud of dust and gas in space is called . . .

• nebula

• supernova

• accretion disc

• bombardment

A massive explosion of a star is called . . .

• supernova
• nebula
• pulsar
• black hole

Tags

NGSS.HS-ESS1-3