CO₂ & CH₄ as Greenhouse Gases (AQA GCSE Chemistry): Quizzes

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Greenhouse gases
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What is the main function of greenhouse gases in Earth's atmosphere?

They absorb and re-emit heat energy

What would Earth's average temperature be without greenhouse gases?

About 18°C-18°C

Which three gases are the main greenhouse gases?

CO2CO_2, CH4CH_4, and H2OH_2O

What type of radiation arrives at Earth from the Sun?

Short-wavelength radiation

What type of radiation does Earth's warmed surface release?

Long-wavelength radiation

What type of radiation do greenhouse gases absorb?

Long-wavelength from Earth

Which human activity increases CO2CO_2 by burning coal, oil, and gas?

Burning fossil fuels

Why does deforestation increase CO2CO_2 in the atmosphere?

Fewer trees to absorb CO2CO_2

How do farm animals like cows produce methane?

When they digest grass

How much more powerful is CH4CH_4 at trapping heat compared to CO2CO_2 over 100 years?

25 times more powerful

What is the main consequence of more greenhouse gases in the atmosphere?

More heat gets trapped

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