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The Ozone Layer

Assessment Model Print

Okay Explanatory Essay

In this explanatory essay, a student provides details about the ozone layer.

Title: The Ozone Layer

Level: Grade 9, Grade 10

Mode: Explanatory Writing

Form: Explanatory Essay

Completed Rubric: The Ozone Layer Rubric

Blank Rubric: Explanatory Assessment Rubric

View related assessment models:

The Ozone Layer

Student Model

The Ozone Layer

On the National Aeronautics and Space Administration (NASA) Web site ( there are some incredible pictures of the earth. Some of these pictures focus on the hole in the ozone layer that has been created over the continent of Antarctica. These images are beautiful and scary at the same time.

Some people would say that there’s no need to worry about the hole in the ozone layer, but that just shows how little most people know. Ozone blocks ultraviolet rays. When the ozone disappears more ultraviolet rays can reach the earth. Ultraviolet light is one of the dangerus forms of light that can lead to skin cancer and create heat.

Everyone knows that cancer is real bad. Now, with the hole in the ozone layer above Antarctica, more and more heat is being allowed in and its making the icecaps melt. Sure, that’s far from most of us, but think about what will happen if even more heat gets in and even more of the icecaps melt, they’ll melt much farther and the level of the oceans will rise and swallow up coastland all over the world! Just think, most of the state of Florida could be covered by water. Also many of the world’s largest cities—like new York and Los Angeles are near the ocean. And cities in other parts of the world like Bombay, India and Hong Kong would also be flooded.

And that’s just what will happen with the water. How much hotter will the planet become? Think about all the plants and animals that couldn’t live if it were hotter. There are all ready days that kill people, plants, and animals because it’s too hot, try adding a few degrees and see how many more can’t deal with it.

The ozone layer is an important part of the earth’s natural defenses. It helps to keep the planet at a normal temperture. People are doing a real bad thing by releasing damaging chemicals into the air. Everyone needs to watch the ozone layer.


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