High and Low Mass Stars

Why do even the most massive stars stop fusing at iron?

• Iron absorbs energy instead of releasing it

• Iron releases energy instead of absorbing it

• Iron is the least stable element

• Iron just hates fusing

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

whats the color of a low mass star

• red and yellow

• blue

• white

• orange and yellow

How big does a star need to be to be considered high mass

• 1 solar mass

• 2 solar masses

• 4 solar masses

• 8 solar masses

When do high mass stars leave the main sequence

• When there is no more helium in the core

• When there is no more hydrogen in the core

• When there is no more oxygen in the core

• When there is no more iron in the core

Tags

NGSS.HS-ESS1-1

What is a type 1 supernova

• carbon detonation

• death of a high mass star

• death of a low mass star

• iron detonation

Tags

NGSS.HS-ESS1-3

What is a type 2 supernova

• carbon detonation

• death of a high mass star

• death of a low mass star

• iron detonation

Tags

NGSS.HS-ESS1-3

How long do high mass stars tend to stay in the main sequence

• 1 million years

• 10 million years

• 1 billion years

• 10 billion years

What does the core temperature need to rise to for helium to start to fuse

• 100,000 K

• 1,000,000 k

• 10,000,000 k

• 100,000,000 k

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What is the Pauli Exclusion Principle

• Two protons cannot exist in the same state

• Two electrons cannot exist in the same state

• Two neutrons cannot exist in the same state

• Two isotopes cannot exist in the same state

What is the first stage of the life cycle of a star for all stars?

• nebula
• protostar
• main-sequence
• red giant