Across
- 2. the channel of partially charged air
- 4. ranks tornadoes according to their destruction and wind speed
- 8. a branched channel of positively charged particles
Down
- 1. the heat required to convert a solid into a liquid or a vapor
- 3. a body of air with horizontally uniform temperature
- 5. violent downdrafts that are concentrated in a local area
- 6. extremely powerful storms
- 7. violent, whirling column of air in contact with the ground
- 9. the sound waves that follow after thunder