Across
- 2. electrons given off by some types of radioactive decay
- 3. distance of two similar points of a wave
- 4. isotope used to estimate age through carbon dating
- 7. breakdown of a nucleus releasing energy and matter
- 9. given off by some types of radioactive decay; helium nuclei
- 11. found in the periodic table
- 13. the effect of one factor depends on the level of another
- 16. when light shifts towards the red end of the spectrum
- 18. distance traveled per unit of time
- 20. when a nucleus splits into smaller nuclei
- 22. speed in a given direction
- 23. anything that takes up space
- 24. particles that transmit light
Down
- 1. scientists’ best understanding of how the universe formed
- 5. center of an atom containing protons and neutrons
- 6. means "break down"
- 8. when two nuclei are joined into a larger nucleus
- 10. The time it takes for half a sample of radioactive nuclei to decay
- 12. subatomic particle with a positive charge
- 14. atoms of the same element but different mass
- 15. a measure of the amount of matter in an object
- 16. the emission of energy or particles
- 17. high-energy photons from radioactive decay
- 19. subatomic particle with negative charge
- 21. subatomic particle with no charge (neutral)