1. Match each of the following lapse rates with the appropriate condition for which they should be used.Each answer is used only once.

A. Normal/environmental lapse rate (NLR/ELR; 3.5°F/1,000 ft)
B. Dry adiabatic lapse rate (DALR; 5.5°F/1,000 ft)
C. Wet adiabatic lapse rate (WALR; ~3.0-3.2°F/1,000 ft)___An air parcel is unstable and is rising. It is at or below the dew point temperature, meaning itsrelative humidity is 100%.
___The air is stable and not rising or descending.
___An air parcel is unstable and is rising. It is above the dew point temperature, meaning its relativehumidity is less than 100%

2. Using the Grand Canyon as an example from class, and assuming the air is stable and not rising on agiven day, what is the temperature at the following places if it is 84°F at the South Rim Trailhead that is6,800 feet in elevation?
3-mile resthouse at 4,900 feet _____ °F
River resthouse at 2,500 feet _____ °F
How much did the temperature change from the South Rim Trailhead to the River resthouse?_____ °F
3. Fill in the temperatures for the following diagram using the information provided. The air is unstablearound Galveston Island on a warm summer day, leading the air parcel to rise. When the parcel startsat 0 feet of elevation it is 94°F. It reaches the dew point boundary at 4,000 feet of elevation. It reachesa final elevation of 8,000 feet. Hints: Think about when you use the DALR and the WALR; use a WALRof 3.0°F/1,000 ft; is the air parcel warming or cooling as it increases in elevation and expands?

8,000 ft

4,000 ft

0 ft 94__°F