Use words from the box to complete the sentence.
| black dwarf | main sequence | | nebula | protostar | supernova |
As gravity pulls a giant cloud of interstellar dust and gas together, the temperature and pressure in the core rise before nuclear fusion can begin. This early developmental stage of a star's life cycle is called a .....
42 exam-style questions on Edexcel GCSE Physics 7.3 Stars. Each one has a worked solution and a mark scheme showing where the marks go.