Across
- 3. resistance is measured in these
- 5. start of the electomagnetic spectrum
- 9. the time is takes radiation to decrease in activity by half
- 10. substances that give out radiation and know to be this
- 11. was placed in a russian spys drink to kill him (type of radiation)
- 13. nuclear radiation does this to materials
- 14. used in hospitals
- 15. the colour of the earth wire
- 16. in wave form this made the hulk become the hulk
Down
- 1. plastic is a poor one of these
- 2. fuel tankers are this when they are fueling something
- 4. generated by friction
- 6. voltmeter measures these
- 7. gamma radiation is used for this in hospitals
- 8. the colour of the netural wire
- 12. this is called an object that is within the earths gravitational field
- 15. middle strenght radiation