1.9 Life Cycle 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

Tags

NGSS.HS-ESS1-1

Once star has ignited and has used up all of the hydrogen are called:

• Neutron Star

• White Dwarfs

• Red Giants

• Black Holes

Tags

NGSS.HS-ESS1-3

After a supernova, the core can collapse into a neutron star, or if massive enough it can become a:

• Black Hole

• White Dwarf

• Red Supergiant

• Black Dwarf

All stars begin their life in a

• Main Sequence
• Nebula
• Protostar
• Black Dwarf

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

The life cycles of stars are determined by their:

• mass (size)
• color
• distance from Earth
• luminosity

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

Our sun is currently in what star stage?

• Protostar
• Nebula
• Main Sequence
• Red Giant

Tags

NGSS.HS-ESS1-1

______ is a force that causes dust particles to stick together in a nebula.

• nuclear fusion
• gravity
• hydrogen
• friction

Tags

NGSS.MS-ESS1-2

Most stars are made of which elements?

• Hydrogen only
• Hydrogen and Lithium
• Hydrogen and Sodium
• Hydrogen and Helium

Tags

NGSS.HS-ESS1-3

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

• pulsar
• red giant 
• supernova
• black hole

A ________ is an object so dense with so much gravity that even light cannot escape.

• neutron star
• white dwarf
• blackhole
• black dwarf

Tags

NGSS.HS-PS2-4