In blowing from the desert plateaus of Utah and Nevada toward the southwest, the Santa Ana wind undergoes [(expansional cooling) (compressional…

In blowing from the desert plateaus of Utah and Nevada toward the southwest, the Santa Ana wind undergoes [(expansional cooling) (compressional warming)] at a rate of _____ Celsius degrees per 1000 m. If the initial air temperature is 15 °C (59 °F), how much descent is required for the air temperature to reach 35 °C (95 °F)?

Answer: __________ m.