Question

Students write two short paragraphs:

Paragraph 1 — How the Layers Are Alike

Explain two similarities among Earth’s atmospheric layers.
(Example: They are all part of Earth’s atmosphere; each has a specific altitude and function.)





Paragraph 2 — How the Layers Differ

Explain two differences between any two layers.
(Example: Different temperatures, different altitudes, different events like weather vs. auroras.)

Answer 1

Paragraph 1 — How the Layers Are Alike
All atmospheric layers are part of Earth’s atmosphere and are made mostly of the same gases (mainly nitrogen and oxygen), so they together surround and protect the planet. Also, each layer has a defined range of altitude and a particular role or characteristic (for example, where most weather happens, where the ozone absorbs UV, or where satellites orbit).

Paragraph 2 — How the Layers Differ
Compare the troposphere and the stratosphere: in the troposphere temperature generally decreases with altitude, while in the stratosphere temperature increases with altitude because the ozone layer absorbs ultraviolet light. The troposphere contains most of the air mass, water vapor, and all weather, whereas the stratosphere is drier, more stable, and contains the ozone layer and jet streams.