Life of a Star Answer Key

Students explore the cause-and-effect chain that defines the life cycle of stars. They complete missing stages for both small/medium and massive stars, identifying key transitions such as main sequence, supernova, and planetary nebula phases. The final question encourages scientific reasoning by asking why massive stars have shorter lives than smaller ones. This worksheet reinforces understanding of stellar processes, change over time, and the relationships between energy, size, and lifespan.

Curriculum Matched Skills

Science – Stellar Life Cycle and Energy Conversion

Science – Cause and Effect in Astronomical Systems

Reading – Filling in Scientific Sequences and Explanations

Critical Thinking – Explaining Scientific Relationships

This worksheet is part of our Stars and Constellations collection.