What is the main component of Earth's atmosphere?
Atmosphere and Global Warming

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Chemistry
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8th - 9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Nitrogen, which makes up about 78% of the atmosphere.
2.
FLASHCARD QUESTION
Front
What is the percentage of oxygen in Earth's atmosphere?
Back
Approximately 21%.
3.
FLASHCARD QUESTION
Front
What is the role of carbon dioxide in the atmosphere?
Back
Carbon dioxide is a greenhouse gas that traps heat in the atmosphere, contributing to the greenhouse effect.
4.
FLASHCARD QUESTION
Front
What is the greenhouse effect?
Back
The greenhouse effect is the process by which certain gases in the Earth's atmosphere trap heat, keeping the planet warm.
5.
FLASHCARD QUESTION
Front
What are greenhouse gases?
Back
Greenhouse gases include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and water vapor.
6.
FLASHCARD QUESTION
Front
What is global warming?
Back
Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases.
7.
FLASHCARD QUESTION
Front
What evidence supports the occurrence of global warming?
Back
Rising CO2 levels, increasing sea levels, and decreasing glacier mass.
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