Skip to content
    Physics GCSE

    start of fusion

    What start of fusion means in Physics GCSE, as defined for AQA.

    Definition of start of fusion

    Check what you remember

    Read the wording for your board, then hide it and explain start of fusion in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: AQA

    The point when the core is hot and dense enough for hydrogen nuclei to fuse, and the object becomes a main sequence star.
    AQA · Our solar system (study guide)

    Topics that use start of fusion

    Related terms

    Using start of fusion in the exam

    Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

    Practise Physics questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Physics GCSE terms