Fusion in Stars (AQA GCSE Physics): Flashcards
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Practise the cards
12 cards from this deck
Where do fusion reactions occur in a protostar?
Where do fusion reactions occur in a protostar?
Core of the protostar
What is released during fusion reactions?
What is released during fusion reactions?
Lots of energy
What happens to a protostar when energy is released from fusion?
What happens to a protostar when energy is released from fusion?
It heats up
What does a heated protostar eventually become?
What does a heated protostar eventually become?
A star
What type of nuclei fuse in a star's core?
What type of nuclei fuse in a star's core?
Hydrogen nuclei
What is formed when hydrogen nuclei fuse?
What is formed when hydrogen nuclei fuse?
Helium nuclei
Term for a star kept in balance by two forces
Term for a star kept in balance by two forces
Main sequence star
How many forces keep a main sequence star in balance?
How many forces keep a main sequence star in balance?
Two
Force that pulls a star's matter inward
Force that pulls a star's matter inward
Gravity
What gravity causes in a star
What gravity causes in a star
Gravitational collapse
What creates the pressure pushing matter outward in a star?
What creates the pressure pushing matter outward in a star?
Fusion
What pressure from fusion causes in a star
What pressure from fusion causes in a star
Expansion