To find the difference in altitude between a location that is 500 meters above sea level and one that is 200 meters below sea level, you can add their absolute altitudes.
- The altitude of the first location is +500 meters (above sea level).
- The altitude of the second location is -200 meters (below sea level).
To find the difference:
\[ 500 \text{ meters} - (-200 \text{ meters}) = 500 + 200 = 700 \text{ meters} \]
Thus, the difference in altitude between the two locations is 700 meters.