Practice IB Physics Topic E.5 Fusion and Stars with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for E.5 Fusion and Stars and mirrors Paper 1A, 1B, 2 style where relevant.
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Which of the following best describes a main sequence star?
Nuclear fusion occurs in stars such as the Sun.
Define the term “nuclear fusion”.
State the condition necessary for fusion to occur.
Identify one element produced by fusion in the Sun.
State the role of fusion in the Sun.
Which condition is necessary for nuclear fusion to occur in the core of a star?
Fusion is considered a potential future energy source on Earth.
State one technological challenge in achieving fusion on Earth.
Explain why confinement is necessary for fusion reactors.
Suggest one advantage and one disadvantage of fusion over fission.
In the core of stars like the Sun, fusion reactions produce large quantities of energy and also release subatomic particles called neutrinos.
State what neutrinos are.
Describe the role of neutrinos in nuclear fusion reactions occurring in stars.
Suggest why neutrinos are able to escape the core of the Sun while photons take thousands of years.
Explain how detecting solar neutrinos on Earth supports our understanding of fusion in the Sun.
Discuss one challenge and one solution associated with neutrino detection on Earth.