Which layer is the closest to Earth's surface in the atmosphere?

Which layer is the closest to Earth's surface in the atmosphere?

• A. Stratosphere
• B. Thermosphere
• C. Troposphere
• D. Mesosphere

Answer: (C)

The layer closest to Earth's surface is the troposphere. This is where most of the atmosphere’s mass sits, and it’s the home of weather, clouds, and storms, which ties it directly to the ground. In the troposphere, temperature generally falls with altitude, and it ends at the boundary called the tropopause, where the next layer—the stratosphere—begins. Beyond the troposphere lie the stratosphere, mesosphere, and thermosphere, each higher up with different temperature patterns and characteristics. Since weather and the bulk of atmospheric mass inhabit the lowest layer, the troposphere is the one nearest the surface.

The layer closest to Earth's surface is the troposphere. This is where most of the atmosphere’s mass sits, and it’s the home of weather, clouds, and storms, which ties it directly to the ground. In the troposphere, temperature generally falls with altitude, and it ends at the boundary called the tropopause, where the next layer—the stratosphere—begins. Beyond the troposphere lie the stratosphere, mesosphere, and thermosphere, each higher up with different temperature patterns and characteristics. Since weather and the bulk of atmospheric mass inhabit the lowest layer, the troposphere is the one nearest the surface.