Climate Change Basics Quiz

Climate change refers to long-term shifts in Earth's climate, primarily driven by increased greenhouse gases from human activities. Since the Industrial Revolution, burning fossil fuels such as coal, oil, and natural gas, along with deforestation and certain agricultural practices, has raised atmospheric carbon dioxide (CO2) concentrations by roughly 50%. These greenhouse gases trap heat in the lower atmosphere, causing the planet's average surface temperature to increase by about 1.26 °C above pre-industrial levels.

This warming has led to serious environmental changes, including rising sea levels, melting glaciers and permafrost, more frequent extreme weather events like heatwaves, storms, and droughts, and disruptions to ecosystems. The Northern Hemisphere and Arctic regions have experienced especially rapid warming. These impacts pose significant risks to human societies, including increased flooding, heat stress, resource scarcity, and economic losses.

Mitigation efforts focus on reducing emissions from fossil fuels through the adoption of cleaner energy sources such as wind, solar, hydro, and nuclear power. Additionally, enhancing carbon sinks through reforestation and improved land management practices helps remove CO2 from the atmosphere. This free quiz covers fundamental facts about the greenhouse effect, greenhouse gases, observed warming, its impacts, and strategies to mitigate climate change.

No signup needed. Facts checked against Wikipedia: Climate change.

What the quiz asks

1. What is the primary cause of modern-day global warming?
2. Which gas is the main driver of global warming?
3. How much has Earth's average surface temperature increased since pre-industrial times?
4. Why does the Northern Hemisphere warm faster than the Southern Hemisphere?
5. What effect do greenhouse gases have on Earth's heat?
6. Which of the following is considered a feedback rather than a direct forcing in climate change?
7. What human activity besides fossil fuel burning releases significant CO2?
8. What percentage of extra heat energy is stored in oceans since 1970?
9. Which energy sources are promoted to replace fossil fuels for climate mitigation?
10. How long does methane typically remain in the atmosphere?

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