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Quizzes > Science > Earth & Space Science

Test Your Global Warming and Greenhouse Effect Knowledge

Think you know how the greenhouse effect refers to trapping heat? Take the quiz now!

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art climate quiz scene with earth, thermometer, greenhouse effect icons and clouds on teal background

Think you know the answers to global warming questions? Dive into our free Global Warming Questions Quiz and challenge your climate IQ with each thought-provoking item. You'll uncover why the greenhouse effect refers to the process by which heat-trapping gases keep our planet warm, and you'll test your grasp on everything from carbon cycles to rising sea levels. Have you ever searched for greenhouse effect brainpop quiz answers? This climate change quiz will satisfy your curiosity and sharpen your eco-conscious insights. Ready to make an impact? Check out our questions on global warming and jump straight into the global warming quiz - let's get started!

Which greenhouse gas is most abundant in Earth's atmosphere?
Carbon dioxide
Methane
Ozone
Nitrous oxide
Carbon dioxide is the most abundant anthropogenic greenhouse gas, responsible for the largest share of human-caused warming. Its concentration has risen due to fossil fuel combustion and deforestation, trapping more heat in the atmosphere. Other gases like methane and nitrous oxide are more potent per molecule but occur in much lower concentrations. NASA Climate Causes
What is the primary cause of current global warming?
Volcanic eruptions
Human activities
Earth's orbital changes
Solar flares
The overwhelming majority of scientific evidence points to greenhouse gas emissions from human activities - especially burning fossil fuels - as the main driver of recent warming. Natural factors like volcanic eruptions or solar variability have contributed much less to the temperature increase observed since the mid-20th century. The Intergovernmental Panel on Climate Change has concluded that it is extremely likely that human influence has been the dominant cause. IPCC SR15
In which layer of Earth's atmosphere is the ozone layer primarily found?
Mesosphere
Thermosphere
Stratosphere
Troposphere
The ozone layer resides in the lower stratosphere, roughly 10 to 30 kilometers above Earth's surface, where it absorbs and scatters ultraviolet solar radiation. This absorption protects living organisms from harmful UV-B rays. In the troposphere, ozone acts as a pollutant rather than a protective layer. NASA Ozone Layer Facts
Which human activity contributes the most to carbon dioxide emissions?
Deforestation
Burning fossil fuels
Cement production
Livestock farming
Burning coal, oil, and natural gas for energy and transportation produces the largest share of CO2 emissions globally. While deforestation, livestock, and industry also contribute significantly, fossil fuel combustion remains the primary source. Efforts to transition to renewable energy target this sector to reduce emissions. EIA GHG Emissions
Approximately how much has global average surface temperature increased since the pre-industrial era (mid-19th century)?
About 2.3°C
About 0.5°C
About 1.1°C
About 3.8°C
Global average surface temperatures have risen by roughly 1.1°C above pre-industrial levels, driven by greenhouse gas emissions from human activities. This warming is linked to more frequent heatwaves, sea level rise, and changes in precipitation patterns. It is one of the main indicators used by the IPCC to assess climate change progress. NASA Climate Vital Signs
What was the approximate atmospheric CO2 concentration reached in 2020, as measured at Mauna Loa Observatory?
350 ppm
417 ppm
280 ppm
550 ppm
In 2020, atmospheric CO2 concentrations surpassed 417 parts per million (ppm) at Mauna Loa Observatory, the highest level in human history. This rise reflects continued reliance on fossil fuels and land-use changes. Pre-industrial levels were around 280 ppm. NOAA Trends
Which international agreement aims to limit global warming to well below 2°C above pre-industrial levels?
Montreal Protocol
Paris Agreement
Kyoto Protocol
UNFCCC
The Paris Agreement, adopted in 2015 under the UN Framework Convention on Climate Change (UNFCCC), seeks to keep the increase in global average temperature well below 2°C, preferably to 1.5°C, above pre-industrial levels. The Kyoto Protocol was an earlier treaty with binding targets for developed countries but did not include the 1.5°C goal. UNFCCC Paris Agreement
What term describes the process by which greenhouse gases trap heat in the Earth's atmosphere?
Coriolis effect
Ozone depletion
Greenhouse effect
Albedo effect
The greenhouse effect occurs when greenhouse gases like CO2 and methane absorb infrared radiation emitted by Earth's surface, preventing it from escaping into space and thus warming the atmosphere. This natural process is essential for life, but human-enhanced concentrations are increasing global temperatures. NOAA Greenhouse Effect
Which gas has a global warming potential (GWP) roughly 28 - 36 times greater than CO2 over a 100-year period?
Chlorofluorocarbon-11
Methane
Nitrous oxide
Sulfur hexafluoride
Methane has a 100-year global warming potential about 28 - 36 times that of CO2, making it a potent greenhouse gas despite lower atmospheric concentrations. It is released from sources like fossil fuel extraction, livestock, and wetlands. Reducing methane emissions can yield rapid climate benefits. EPA GWP
What feedback mechanism amplifies warming as ice and snow cover decline?
Water vapor feedback
Ice - albedo feedback
Carbon cycle feedback
Cloud feedback
The ice - albedo feedback occurs when warming reduces ice and snow, lowering Earth's reflectivity (albedo) and causing more solar absorption and further warming. This positive feedback is pronounced in polar regions. It accelerates climate change beyond initial greenhouse gas forcing. NASA Ice-Albedo Feedback
Which oceanic phenomenon typically leads to global cooling effects?
Thermohaline circulation slowdown
El Niño
Gulf Stream strengthening
La Niña
La Niña is characterized by cooler-than-average sea surface temperatures in the central and eastern Pacific Ocean, which can lead to temporary global cooling effects and shifts in weather patterns. In contrast, El Niño warms the region and often contributes to global temperature spikes. NOAA ENSO
What term describes natural systems or reservoirs that absorb more carbon than they release?
Carbon footprint
Carbon budget
Carbon source
Carbon sink
A carbon sink refers to natural reservoirs such as forests, soils, and oceans that absorb and store more carbon than they emit, offsetting part of human emissions. Carbon sources, by contrast, release more carbon than they absorb. Maintaining and enhancing sinks is crucial for mitigating climate change. IPCC SRCCL Chapter 1
According to the IPCC Sixth Assessment Report, what is the remaining carbon budget (67% chance) to limit warming to 1.5°C from 2020 onward?
About 1000 GtCO2
About 200 GtCO2
About 500 GtCO2
About 1500 GtCO2
The IPCC AR6 estimates a remaining carbon budget of roughly 500 gigatonnes of CO2 from 2020 onwards for a 67% probability of limiting warming to 1.5°C. Exceeding this budget significantly raises the risk of surpassing the target. Accurate budgeting is key for policy and emission pathways. IPCC AR6 SPM
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Study Outcomes

  1. Understand Key Concepts of Global Warming -

    Grasp the fundamental causes and consequences of global warming and answer common global warming questions with confidence.

  2. Explain the Greenhouse Effect Process -

    Describe what the greenhouse effect refers to and outline the steps in the greenhouse effect process by which heat is trapped in Earth's atmosphere.

  3. Differentiate Major Greenhouse Gases -

    Identify and compare the roles of carbon dioxide, methane, water vapor, and other gases in driving the greenhouse effect.

  4. Analyze Quiz Feedback -

    Review your quiz results to pinpoint strengths and areas for improvement in your understanding of climate change.

  5. Apply Knowledge to Real-World Discussions -

    Use your quiz insights to engage in informed conversations about climate policy, mitigation, and adaptation strategies.

  6. Access Supplemental BrainPOP Quiz Answers -

    Locate and interpret greenhouse effect BrainPOP quiz answers to reinforce your grasp of greenhouse gas dynamics.

Cheat Sheet

  1. Major Greenhouse Gases and Global Warming Questions -

    According to the IPCC, CO₂, CH₄, N₂O, and fluorinated gases are key drivers of anthropogenic warming. Remember "C&M" (CO₂ & Methane) to recall the top two contributors by volume. When tackling global warming questions, note each gas's global warming potential (e.g., CH₄ has a GWP of ~28 - 36 over 100 years).

  2. The Greenhouse Effect Process Explained -

    In climate science, the greenhouse effect refers to the process by which certain atmospheric gases absorb and re-emit infrared radiation, warming the planet's surface and lower atmosphere. Mnemonic: "GAS RISE" for Gases Absorb, Send Re-radiated Infrared Selectively. This core concept is often tested, like in greenhouse effect BrainPOP quiz answers, so picturing IR photons bouncing off gas molecules can help.

  3. The Carbon Cycle: Sources, Sinks, and Equations -

    Photosynthesis (6 CO₂ + 6 H₂O → C₆H₝₂O₆ + 6 O₂) and respiration form the basis of the global carbon cycle, moving carbon between atmosphere, biosphere, and oceans. Institutions like NOAA and NASA emphasize how deforestation shifts this balance, reducing natural sinks. A quick way to remember: "Tree = Carbon Spree," since forests store vast carbon pools.

  4. Radiative Forcing and Climate Sensitivity -

    Radiative forcing (ΔF) quantifies energy imbalance; for CO₂ doubling, ΔF ≈ 3.7 W/m² using ΔF = 5.35·ln(C/C₀). Understanding this formula from peer-reviewed journals helps answer many global warming questions on climate sensitivity. Visualize it as turning up a "heat knob" on Earth's energy budget to see predicted temperature rises.

  5. Climate Feedback Loops: Amplifiers of Change -

    Feedbacks like water-vapour (positive) and ice-albedo (positive when ice melts) can double initial warming impacts, as detailed in NASA research. A handy tip: "Warm Water, More Clouds, More Warmth" outlines why water-vapour feedback accelerates warming. Recognizing these loops is vital for acing any climate quiz and deepening your climate IQ.

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