Solar Fusion Fill-In Answer Key

In this cloze-style worksheet, students read a short informational passage about solar energy and fusion. A word bank provides important terms such as fusion, hydrogen, helium, energy, core, photosphere, light, heat, photosynthesis, and Earth. Learners fill in the blanks in each sentence with the correct vocabulary word, reinforcing their understanding of how nuclear fusion in the Sun’s core produces energy that travels outward. The sentences also connect solar energy to life on Earth and to processes like photosynthesis. A challenge question at the bottom invites students to explain in a few sentences why solar energy is considered renewable, encouraging deeper reasoning. This activity combines content review with vocabulary practice and short written explanation.

Curriculum Matched Skills

Science – Nuclear Fusion and Energy Transfer in the Sun

Science – Renewable Energy and its Role on Earth

English Language Arts – Using Word Banks to Complete Informational Texts

English Language Arts – Short Explanatory Writing in Science Contexts

This worksheet is part of our The Sun collection.