How many questions are in this quiz?

This quiz has 110 questions on greenhouse gas sources, properties, and impacts.

What is the quiz format?

Every question is multiple-choice with 4 options, and there’s no timer.

Can I choose the number of questions and difficulty?

Yes. You can select your preferred question count and set difficulty before starting.

Which greenhouse gases are covered?

You’ll see CO₂, methane, nitrous oxide, water vapor concepts, and fluorinated gases, plus their sources and effects.

What are common mistakes this quiz targets?

Mixing up ozone depletion with global warming, confusing emissions with concentrations, and misjudging short-lived vs long-lived gases are common pitfalls.

Online Quiz: Greenhouse gases: sources

About this quiz

What you’ll learn in this quiz

Greenhouse gases shape Earth’s energy balance, but it’s easy to mix up sources, lifetimes, and warming effects. This quiz helps you connect everyday activities and natural processes to specific gases and climate outcomes.

Each question has 4 options and there’s no timer, so you can think through cause-and-effect rather than rushing. Choose the question count you want before you start, and set the difficulty to match your goal (quick review, steady practice, or a tougher challenge).

Skills you’ll practice

You’ll practice identifying major greenhouse gases, matching them to emission sources, and explaining their impacts on warming, feedback loops, and climate policy choices. Expect a mixed difficulty balance: straightforward definitions are blended with scenario questions that require careful reading.

Distinguishing CO₂, CH₄, N₂O, water vapor, and fluorinated gases by source and impact
Linking sectors (energy, transport, agriculture, industry) to typical emissions
Comparing short-lived vs long-lived gases and why that matters for mitigation
Interpreting terms like radiative forcing, GWP, carbon sinks, and feedbacks
Spotting common misconceptions in charts, headlines, and simplified claims

Common pitfalls (and how to avoid them)

Many players overgeneralize “all emissions are CO₂” or assume the strongest gas is always the most important overall; watch for scale, concentration, and lifetime. Another frequent trap is confusing ozone depletion with greenhouse warming, or mixing up emissions with atmospheric concentration.

How difficulty is balanced

Mixed difficulty means you’ll see an even spread of basics, applied questions, and a few deeper items that test nuance (like indirect effects and sector-specific details). If you miss a tougher question, use the options to eliminate distractors and focus on what the question is really asking.