Life Cycle of Stars

Question 1

Where do all stars start

Answer 1

Nebula cloud

Question 2

What happens to stars after nebula phase

Answer 2

protostar

Question 3

Once a protostar what do all stars become

Answer 3

Main Sequence Stars

Question 4

After Main Sequence Stars what two stars could form

Answer 4

Red Giant

Red super Giant

Question 5

What does the formation of red giant/red super giant depend on

Answer 5

Size of star
e.g
Same size of sun = red giant
10x bigger than sun = red super giant

Question 6

After red giant what is formed

Answer 6

white dwarf

Question 7

After a white dwarf what is formed

Answer 7

black dwarf

Question 8

After a red super giant what is formed

Answer 8

Supernova

Question 9

After supernova what two things can be formed

Answer 9

Neutron star OR Black hole

Question 10

What does formation of neutron or black hole depend on

Answer 10

size
e.g massive ones make black hole

Question 11

In main sequence stars what are forces like

Answer 11

radiation pressure from fusion (outwards) = gravity (inward)

Question 12

What does supernova allow to fuse

Answer 12

causes iron to fuse and create heavier elements due to high temps