Life of Stars

A star is born when:

• nuclear fusion starts

• a nebula becomes a protostar

• gases in a nebula condense

• hydrogen is used up in fusion processes

Main sequence stars are made primarily of which elements?

• Hydrogen only

• Helium and Carbon

• Carbon and Iron

• Hydrogen and Helium

Tags

NGSS.HS-ESS1-3

All stars begin their life as a

• Main Sequence

• Nebula

• Protostar

• Black Dwarf

Tags

NGSS.HS-ESS1-3

A medium-mass star like our sun is expected to live for __________ years.

• 10 Billion

• 10 Thousand

• 10 Million

• 10 trillion

Tags

NGSS.HS-ESS1-1

A gigantic explosion that causes the death of a large star is called

• pulsar

• red giant 

• supernova

• black hole

The core of a Red Giant collapses and becomes a ___________________.

• White Dwarf

• Blue Supergiant

• Red Supergiant

• Black Hole

The stage after the main sequence star:

• red giant

• nebula

• white dwarf

• black dwarf

A star is born when it begins...

• nuclear fusion

• nuclear abrasion

• chemical reaction

• nuclear fission

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

We consider these stars 'dead' because they no longer are carrying out fusion in their cores.

• White Dwarfs

• Red Dwarfs

• Red Giants

• Brown Dwarfs

Larger stars (stars with more mass) have a ___________ life cycle than smaller stars.

• Longer Life span

• Shorter Life span