Water and Carbon Cycles (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the unit used to measure radiative forcing?
What is the unit used to measure radiative forcing?
Watts per square metre (watts/m²)
According to IPCC AR5, what is the current level of radiative forcing?
According to IPCC AR5, what is the current level of radiative forcing?
2.8 watts/m²
What was the state of radiative forcing before 1750?
What was the state of radiative forcing before 1750?
Virtually negligible
What percentage of the total greenhouse effect does carbon dioxide contribute?
What percentage of the total greenhouse effect does carbon dioxide contribute?
Approximately 20%
What percentage of the total greenhouse effect does water vapour contribute?
What percentage of the total greenhouse effect does water vapour contribute?
Roughly 50%
What percentage of the greenhouse effect do clouds contribute?
What percentage of the greenhouse effect do clouds contribute?
About 25%
Which gas fundamentally controls atmospheric temperature?
Which gas fundamentally controls atmospheric temperature?
Carbon dioxide
What type of feedback loop occurs when warming increases evaporation and water vapour levels?
What type of feedback loop occurs when warming increases evaporation and water vapour levels?
Positive feedback loop
What percentage of Earth's water is accessible to support life on land?
What percentage of Earth's water is accessible to support life on land?
Approximately 1%
By how much will Earth's temperature rise due to existing CO₂, even without further emissions?
By how much will Earth's temperature rise due to existing CO₂, even without further emissions?
At least 0.6°C