What is the standard (average) ozone thickness in an area?
Answer:
C. 300 Dobson unit
Read Explanation:
Dobson Unit (DU).
- Ozone thickness is measured in Dobson Units (DU).
- One Dobson Unit represents a layer of ozone that is 0.01 millimeters thick under standard temperature and pressure.
- Average ozone layer thickness ranges from 300 to 500 Dobson Units.
- Thickness varies based on geographic location and time of year.
- Higher values are generally found at mid-latitudes.
- Lower values are typically found near the equator and poles.
- The Dobson unit is named after Gordon Dobson who built the first instrument to measure total ozone from the ground.
