Composition and Properties of Earth's Atmosphere

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•
Science
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the composition of Earth's atmosphere?
Back
Earth's atmosphere is composed of 78% nitrogen, 21% oxygen, and trace amounts of other gases such as argon, carbon dioxide, and water vapor.
2.
FLASHCARD QUESTION
Front
What happens to air pressure as altitude increases?
Back
Air pressure decreases as altitude increases.
3.
FLASHCARD QUESTION
Front
What is the troposphere?
Back
The troposphere is the lowest layer of Earth's atmosphere where most weather phenomena occur.
4.
FLASHCARD QUESTION
Front
What causes winds on Earth?
Back
Winds are caused by differences in air pressure.
5.
FLASHCARD QUESTION
Front
What is the difference between local winds and global winds?
Back
Local winds are caused by temperature differences in small areas, while global winds are caused by large-scale atmospheric circulation.
6.
FLASHCARD QUESTION
Front
How does energy from the Sun reach Earth?
Back
Energy from the Sun travels to Earth through radiation.
7.
FLASHCARD QUESTION
Front
What is the role of the ozone layer in the atmosphere?
Back
The ozone layer protects Earth from harmful ultraviolet (UV) radiation from the Sun.
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