527
SELF-ASSESSMENT CHECKLIST
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describe nuclear fusion
25.1
calculate the energy released in a nuclear fusion reaction
25.1
describe the conditions necessary for nuclear fusion
25.1
explain why nuclear fusion takes place in stellar cores
25.1
appreciate the role of mass in stellar evolution
25.2
show the evolution of a star on an HR diagram
25.2
find the distance to a star using the method of parallax
25.2
calculate the radius of a star from its temperature and luminosity
25.2
appreciate the role of the Chandrasekhar and Â­OppenheimerâVolkoff limits
25.2
REFLECTION
Can you describe the conditions necessary for nuclear fusion to occur? Do you appreciate the role of fusion in energy production in stars? Do you understand the main features and regions of a Hertzsprung-Russel diagram? Do you understand the role of mass in stellar evolution? Do you appreciate the role nuclear fusion for nucleosynthesis? Can you describe the stages in the evolution of a main sequence star? Can you solve problems with luminosity and apparent brightness? Do you understand what is meant by stellar parallax?
528
EXAM-STYLE QUESTIONS
You can find questions in the style of IB exams in the digital coursebook.