Fusion in Stars (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
9 questions from this quiz
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Practise the questions
9 questions from this quiz
Where do fusion reactions occur in a protostar?
Where do fusion reactions occur in a protostar?
In the core
What is released when fusion reactions occur in the core of a protostar?
What is released when fusion reactions occur in the core of a protostar?
Lots of energy
What happens to the protostar as energy is released in its core?
What happens to the protostar as energy is released in its core?
It becomes hotter
What do hydrogen nuclei fuse to form in the core of a star?
What do hydrogen nuclei fuse to form in the core of a star?
Helium nuclei
What does the core eventually form as it heats up and brightens?
What does the core eventually form as it heats up and brightens?
A star
What two forces keep a main sequence star in balance?
What two forces keep a main sequence star in balance?
Gravity and pressure
What is a star called when two forces keep it in balance?
What is a star called when two forces keep it in balance?
A main sequence star
What does gravity cause when it pulls the star's matter inward?
What does gravity cause when it pulls the star's matter inward?
Gravitational collapse
What does pressure from fusion cause when it pushes matter outward?
What does pressure from fusion cause when it pushes matter outward?
Expansion