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Life cycle of a star (GCSE)

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alisha's version from 2015-05-20 08:21

Section

ABCEDGFHJKMILN

 

LabelAnswer
Astars form from gas, dust, and hydrogen atoms
BH nuclei undergo nuclear fusion to form He giving out heat and light
Cstable period where outward pressure is equal to gravity
Dwhen the star is sun sized
Ewhen the star is larger than the sun
FH starts to run out. Iron and heavier elements are made by the fusion of He. surface cools and expands
GH starts to run out. Iron and heavier elements are made by the fusion of He. surface cools and expands
Hbecomes unstabe and ejects outer layer and core collapses leaving a hot dense mass
Ifuel runs out. it cools
Jthey expand and contract repeatedly undergoing fusion to form elements greater than iron. they then expload.
K3x heavier than sun
Lthrows dust/ gas/ elements into space leaving dense core
Meven heavier
Nblack holes suck everything in
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