What is the average height of troposphere?

The correct answer is Option 1. 

Key Points

•  The troposphere is the lowest layer of the Earth's atmosphere, extending from the surface up to an average altitude of about 7 to 12 kilometers (4.3 to 7.5 miles).
• The height of the troposphere varies depending on the location, season, and weather conditions. However, the average height of the troposphere is about 11 kilometers (6.8 miles) above sea level.

Additional Information

• Earth's atmosphere can be divided into five primary layers based on their temperature and altitude:
  • Troposphere: This is the lowest layer of the Earth's atmosphere, extending from the surface up to an average altitude of 12 kilometers (7.5 miles) at the equator. The majority of Earth's weather occurs in this layer, and it is where most of the Earth's greenhouse gases are concentrated.
  • Stratosphere: This layer lies above the troposphere, extending from about 12 to 50 kilometers (7.5 to 31 miles) in altitude. The ozone layer is located in this layer, which absorbs harmful ultraviolet radiation from the sun.
  • Mesosphere: Above the stratosphere, the mesosphere extends from about 50 to 85 kilometers (31 to 53 miles) in altitude. This layer is known for its extremely low temperatures, as low as -100°C (-148°F) at the top.
  • Thermosphere: This layer extends from about 85 kilometers (53 miles) to the edge of space, around 600 kilometers (372 miles) above the Earth's surface. The temperature increases with altitude in this layer, reaching up to 2,000°C (3,632°F) due to the absorption of solar radiation.
  • Exosphere: The outermost layer of Earth's atmosphere, the exosphere, begins at an altitude of about 600 kilometers (372 miles) and extends into space. This layer is where the Earth's atmosphere gradually thins out and merges with the vacuum of space.