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Across
- 1. A word related to science
- 5. Slow-moving river of ice
- 7. A word related to science
- 9. Pure substance on periodic table
- 10. Preserved remains of ancient life
- 11. A word related to science
- 12. Mixture producing intense heat
- 13. Device for controlled nuclear reactions
Down
- 2. A word related to science
- 3. A word related to science
- 4. One body blocking another in space
- 6. Force attracting objects to Earth
- 8. Uncharged particle in nucleus