life cycle of a star

Question 1

what is nebula

Answer 1

hige cloud of dust and gas from which stars where formed

Question 2

what is nuclear fission

Answer 2

joining of small nuclei to to form larger nuclei

Question 3

what is radiation pressure

Answer 3

the pressure exerted on a surface exposed to electromagnetic radiation

Question 4

what is supernova

Answer 4

the explosive death of a star

Question 5

explain the 3 stages of the birth of a star

Answer 5

huge cloud of dust and gas in space comes together ▶️ a nebula
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gravitational forces pull particles together causing temp to rise
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temp gets to a point that nuclear fission reactions start. Energy is produced and a star is formed

Question 6

what are the 2 forces on a star

Answer 6

• gravitational forces inwards

- radiation pressure outwards

Question 7

when small starts die what happens

Answer 7

star shrinks ▶️ fusion reactions take place ▶️stars surface gets very hot ▶️ while dwarf formed ▶️ white dwarf formed ▶️ unable to sustain fusion reactions ▶️ fades to become a black dwarf

Question 8

what happens when late stars die

Answer 8

star collapses ▶️ outer shell explodes as supernova ▶️ remains shrink more ▶️ neutron star created ▶️ sometimes collapses even further ▶️ this becomes a black hole

Question 9

draw the life cycle of a large star

Answer 9

look at phone

Question 10

draw the life cycle of a small star

Answer 10

look at phone