♻️ap environmental science review

Troposphere

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

The troposphere is the lowest layer of Earth's atmosphere where weather occurs. It extends from the Earth's surface up to about 8-15 kilometers (5-9 miles) in altitude.