Atmospheric warming driven by gases permeable to sunlight yet absorptive of terrestrial thermal radiation is termed________________?
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Answer: A. Green house effect
Explanation
The greenhouse effect occurs when atmospheric gases allow incoming shortwave sunlight to pass through. Simultaneously, these same gases absorb and trap outgoing longwave thermal radiation emitted by the earth. This physical mechanism warms the lower atmosphere. Water vapor, carbon dioxide, methane, and nitrous oxide act as the primary greenhouse gases. They are transparent to visible solar radiation but opaque to infrared energy. This natural blanket maintains earth's surface temperatures within habitable ranges.
Understanding the greenhouse effect is crucial for studying global climate change and atmospheric science. Human activities have intensified this effect by burning fossil fuels and clearing forests. Such actions increase atmospheric gas concentrations and drive global warming. Pollution encompasses a broad spectrum of environmental contaminants beyond thermal radiation trapping. Warming is a general descriptor rather than the specific physical mechanism of radiation absorption. Solar radiation refers solely to incoming energy from the sun.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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