Across
- 3. A _____________ front is preceded by a march of heavy clouds with brief but heavy rain
- 4. Five most important properties of air are temperature, pressure, humidity, ________________ and wind speed
- 5. Grouping of numbers and symbols on a weather map that is used to present conditions at each weather station
- 8. Acronym that stands for radio detection and ranging
- 10. Lines of equal heat
- 11. Instrument used to measure relative humidity
- 12. ___________________________ atmospheric pressure usually indicates bad weather
- 14. Measures wind speeds near the earth's surface
- 15. Phenomenon in which the observed frequency of a wave changes due to motion of the wave's producer or observer
Down
- 1. Maps that give a summary of the weather conditions throughout the entire country at a single point in time
- 2. A __________________ is a good indicator that a tornado will form or is already occurring
- 6. Type of thermometer that measures changes in temperature over time
- 7. Device that measures visibility
- 9. Lines of equal pressure
- 13. Oldest type of barometer