Across
- 3. this is made out of water vapor, unstable air, and lift (nudge)
- 5. divides the Earth into four quadrants with the equator and prime meridian
- 7. giant flash of electricity in the sky caused by a charge buildup in storm clouds
- 10. measures air temperature
- 11. an imaginary line passing through the North Pole and the South Pole around which the planet spins once every 24 hours
- 16. happen when one pole is tilted closest to or farthest from the sun, giving us the longest or shortest days of the year
- 17. measures how much rain or precipitation falls over a specific time
- 18. people who use a combination of physical instruments, digital technology, and supercomputers to check and forecast the weather
- 19. approaching low-pressure system, bringing clouds, rain, wind, or storms
Down
- 1. rotates to shows the direction the wind is blowing
- 2. loud sound wave you hear caused by lightning superheating the surrounding air and making it expand explosively
- 4. a high-pressure system, bringing cool, dry air and clear skies
- 6. (nudge)force pushes the warm air upward
- 8. a very violent and powerful windstorm, often accompanied by rain, hail, snow, or thunder
- 9. measures wind speed using rotating cups
- 12. warm, moist air sits near the ground with colder, drier air positioned high above it
- 13. happens twice a year when the sun shines directly above the equator and Earth's axis tilts neither toward nor away from the sun
- 14. measures atmospheric pressure to track high- or low-pressure systems and predict storms
- 15. measures the amount of moisture or relative humidity in the air