Q1
What do greenhouse gases do?
ATrap heat in the atmosphere
BRelease heat into space
CCool the atmosphere
DNothing
ICSEClass 7 (ICSE)GeographyCh 4 · Topic 1
Greenhouse Effect and Global Warming
The greenhouse effect traps heat in Earth's atmosphere, keeping it warm enough for life, but excessive greenhouse gases cause global warming
Core concept
Greenhouse gases, like carbon dioxide and methane, trap heat from the Sun, similar to how a greenhouse keeps plants warm.
How it works
This natural greenhouse effect is essential for life, keeping Earth's average temperature suitable for living things.
Why it matters
Human activities, like burning fossil fuels and deforestation, have increased greenhouse gas levels, intensifying the greenhouse effect.
Key detail
This intensified effect causes global warming, leading to rising temperatures, melting ice caps, and changing weather patterns worldwide.
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• Greenhouse gases trap heat in the atmosphere.
• Examples: carbon dioxide, methane.
• This is similar to how a greenhouse works.
• The natural greenhouse effect is essential for life.
• Human activities increase greenhouse gas levels.
• Burning fossil fuels and deforestation contribute.
• This intensifies the greenhouse effect.
• It causes global warming and climate change.