Radiation
Across
- 4. a period of about 20 or 30 years - the average time from birth until a person has children
- 9. to discvoer, usually something that was hidden or hard to notice
- 11. the total amounts of electrical energy in things
- 12. to clean very well and make free of germs
- 14. photographs made using invisible rays hat can travel though some solid substances
- 16. what other people think and feel about someone or something
- 22. the pieces of our DNA that carry instructinos for making different body parts
- 23. very tiny pieces of matter that are smaller than atoms
- 24. energy that is sent out in rays or waves by certain substances
- 25. the growth or formation of something
Down
- 1. surrounding area
- 2. good, positive, or helpful things
- 3. to become different from other things of the same type
- 5. living things
- 6. involving energy from the nucleus, or center, of atoms
- 7. treatment of diseases, illnesses, or problems
- 8. traits or special features that make a person or thing different
- 10. extremely important or necessary
- 13. left uncovered, open to danger, or unprotected against the effects of something
- 15. brings about
- 17. left-over or extra
- 18. a possibility or an ability to do something
- 19. causing death
- 20. adjusting, varying, or changing
- 21. amounts someone is exposed to, or amounts that someone takes at one time