Across
- 1. smallest particle of electromagnetic radiation
- 3. negatively charged subatomic particle
- 4. an electron at higher energy state
- 5. electrical and magnetic forces or effects
- 9. positively charged subatomic particle
- 11. a type of radiation that we feel as heat
- 12. Abbreviation for electromagnetic field
- 13. the number of wave cycles in a time period
- 14. distance between two adjacent crests
- 15. the ability to do work
Down
- 2. back and forth movement
- 6. humans use these for communication purposes
- 7. height of a wave from origin to crest
- 8. an electron at lowest energy level
- 10. neutral subatomic particle