Ozone

High school (ages 12+)
Environment & Earth

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/ozone

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the chemical formula?O3
2. What is the stratospheric concentration peak?Approximately 15-35 kilometers (9-22 miles) above Earth's surface
3. What is ozone and why is it important in the sky?Ozone is a gas made of three oxygen atoms. It sits high in the stratosphere and blocks harmful UV rays from the sun.
4. Where can we find the most ozone in the atmosphere?The highest concentration of ozone is in the stratosphere, about 15 to 35 kilometers (9 to 22 miles) above the Earth's surface.

Allotrope: Distinct structural forms of the same element in the same physical state, such as O2 and O3.
Stratospheric Ozone Depletion: The thinning of the ozone layer caused by human-made chemicals like CFCs.
Montreal Protocol: An international treaty designed to protect the ozone layer by phasing out ozone-depleting substances.
Photochemical Reaction: A chemical reaction initiated by the absorption of light energy.