EPA 608 Core · Ozone Depletion · Easy
Where is stratospheric ozone located?
Answer: B. Between 6 and 30 miles above the Earth's surface.
- AFrom the surface up to 6 miles.
- BBetween 6 and 30 miles above the Earth's surface.✓ Correct
- CBetween 50 and 100 miles above the Earth.
- DBelow the troposphere.
Why B is right
The stratosphere, home of the protective ozone layer, extends roughly 6 to 30 miles above the surface; most of the ozone sits about 10 to 25 miles up.
More Core questions
- Why is stratospheric ozone vital for life on Earth?
- Which element in CFCs and HCFCs is responsible for ozone depletion?
- How does chlorine destroy ozone?
- What makes HFC refrigerants harmful to the environment?
- Which metric compares a gas's global warming impact to carbon dioxide?
Go deeper with the study guide EPA 608 Core Exam: Study Guide for 2026, try the free 10-question test or browse all EPA 608 practice questions.
A practice question written for study, checked against 40 CFR Part 82, Subpart F. It is not an official EPA exam question, and this site is not affiliated with the U.S. EPA.