4 Gravity & Celestial Objects ESS1.2

What is a nebula made of?

• light

• gas

• rocks

• gas and dust

What makes the nebula collapse?

• Nuclear fusion

• Gravity

• Black hole

• Electromagnetism

Tags

NGSS.MS-ESS1-2

What happens once the nebula begins to spin?

• a completely flat disk forms

• all the material collects in the middle

• the newborn sun blows out all the material into space

• a planetary disk forms with a bulge in the center.

What are the inner planets made of (primarily)?

• hydrogen and helium

• rock

• ice

• gas

Tags

NGSS.MS-PS1-1

Why are the inner planets smaller?

• they are more dense

• they are the same size as the outer planets

• less material to make them -- (the nebula had lots of gases)

• rock is more compact

Tags

NGSS.MS-PS1-1

What are the outer planets made of?

• rock

• Carbon dioxide

• gas and ice

• oxygen

Why are the outer planets made of gas and ice?

• rock did not exist out in space

• they formed beyond the frost line

• they were closer to the sun

• there was no rock in the nebula

Gravity pulls gases and dust particles in space toward one another, squeezing them into a smaller and smaller space. The temperature at the center rises high enough for nuclear fusion of hydrogen to begin.
What stage in a stars life cycle is this describing? 

• The birth of a star
• The death of a star
• Black Hole
• Stellar Nebula

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

A star at the stage in its life cycle when it stops burning hydrogen, begins burning helium, and expands to a large, low-density star.
What stage in the life cycle does this describe? 

• Supernova
• Black Hole
• Main Sequence
• Red Giant or Red Supergiant

Tags

NGSS.HS-ESS1-3

What fuel do stars use? 

• Oxygen
• Hydrogen
• Carbon
• Iron

Tags

NGSS.HS-ESS1-1