The air we breathe is a mixture of gases that surrounds the Earth. The given pie chart shows the composition of air. What does 78% represent in terms of the gases in the air?
Understand the Problem
The question is prompting the user to complete a sentence regarding the composition of air using information from a pie chart. Specifically, it asks what 78% represents in terms of gas composition.
Answer
Nitrogen gas.
The 78% represents the percentage of nitrogen gas in the air.
Answer for screen readers
The 78% represents the percentage of nitrogen gas in the air.
More Information
78% of the Earth's atmosphere is composed of nitrogen, which is the most abundant gas in the air we breathe.
Tips
A common mistake is to think oxygen is the most abundant gas because it's often discussed in relation to breathing.
Sources
- What's in the Air? - UCAR Center for Science Education - scied.ucar.edu
- Components of Air - Oxygen, Nitrogen, Carbon dioxide, Water Vapour - byjus.com
- Atmosphere of Earth - Wikipedia - en.wikipedia.org
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