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Today, we’re going to discuss global warming. Can anyone tell me what global warming is?
Isn't it about how the Earth is getting warmer?
Exactly! Global warming refers to the increase in Earth's average temperature due to various factors, particularly greenhouse gas emissions. Can anyone name some of these greenhouse gases?
I think carbon dioxide is one of them!
Right! Carbon dioxide, methane, and water vapour are major greenhouse gases. Do you know where they come from?
From human activities like burning fossil fuels?
Correct! The burning of fossil fuels releases a lot of CO₂. That brings us to the link between human activities and global warming.
Why is it a problem if the Earth warms up?
Great question, Student_4! Global warming can lead to severe consequences like melting glaciers, rising sea levels, and unpredictable weather patterns.
In summary, global warming is primarily caused by greenhouse gas emissions due to human activity, leading to significant environmental issues.
Now that we know what global warming is, let’s talk about its effects. How do you think global warming affects us?
It probably affects the weather, right?
Absolutely, Student_1! Global warming leads to extreme weather events like hurricanes and droughts. Anyone else?
What about ice melting? I heard it’s melting at a fast rate.
Yes! Melting glaciers contribute to rising sea levels which can flood coastal areas. This is a critical issue as many people live near the coast.
Is it only nature that is affected?
Not at all, Student_3! Global warming also affects agriculture, biodiversity, and can threaten food security.
To summarize, global warming has significant impacts on weather, ice caps, agriculture, and can also endanger species.
Having understood the effects of global warming, what can we do to tackle it?
We could reduce our carbon footprint by using less energy!
Great point, Student_4! Reducing energy consumption is one way. What else can we do?
We should use renewable energy sources like solar or wind!
Exactly! Renewable energy helps reduce reliance on fossil fuels, which are major contributors to global warming.
Planting trees can help too, right?
Yes! Trees absorb CO₂ and produce oxygen. Together we can all help reduce global warming.
In conclusion, tackling global warming requires a concerted effort from everyone, including using renewable energy, conserving energy, and planting trees.
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Global warming, primarily driven by greenhouse gas emissions like CO₂ and CH₄, contributes to rising global temperatures, melting glaciers, and more extreme weather patterns, impacting both the environment and human life.
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Global Warming: ● Increase in Earth’s average temperature
Global warming refers to the ongoing rise in the Earth's average temperature due to increased levels of greenhouse gases in the atmosphere. This rise in temperature is primarily caused by human activities such as burning fossil fuels, deforestation, and industrial activities that release carbon dioxide and other greenhouse gases.
You can think of Earth as a greenhouse for plants. Just as a greenhouse uses glass to keep plants warm by trapping heat from the sun, the Earth's atmosphere traps heat from the sun due to greenhouse gases. When we add more gases like carbon dioxide to the atmosphere, it's like putting more layers on that greenhouse – it keeps getting warmer and warmer.
● Effects: Melting glaciers, rising sea levels, extreme weather patterns
The effects of global warming are widespread and significant. One major effect is the melting of glaciers and polar ice caps, leading to rising sea levels. Higher sea levels can result in flooding of coastal areas. Additionally, global warming contributes to extreme weather patterns, like hurricanes, heatwaves, and heavy rainfall, which can disrupt ecosystems and human lives.
Imagine a giant ice cube melting in a glass of water. As the ice melts, the water level rises. In the same way, the melting of glaciers is causing the oceans to rise, which can flood coastal towns and cities. Furthermore, think of global warming as a fever for the Earth – just as a person with a fever might experience unusual symptoms, the Earth shows its discomfort through extreme weather events.
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Key Concepts
Global Warming: The long-term rise in Earth's average temperature due to human activity.
Greenhouse Gases: Gases that trap heat in the atmosphere, exacerbating global warming.
Consequences of Global Warming: Includes rising sea levels, extreme weather, and effects on biodiversity.
See how the concepts apply in real-world scenarios to understand their practical implications.
One example of a greenhouse gas is carbon dioxide (CO₂), which is emitted from burning fossil fuels and contributes to the greenhouse effect.
The melting of the polar ice caps is a clear example of the physical changes occurring due to global warming.
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When the Earth starts to heat, nature faces defeat, ice caps melt and waters creep, global warming is deep.
Once upon a time, the Earth was a cool and pleasant place. As humans began to burn more fossil fuels, the sun grew warmer and glaciers began to weep. The seas rose, and creatures of every kind could no longer keep.
Remember 'CREAM' for Climate: Carbon emissions, Rising sea levels, Extreme weather, Affects biodiversity, Mitigation strategies.
Review key concepts with flashcards.
Term
What is global warming?
Definition
What are greenhouse gases?
What are two effects of global warming?
Review the Definitions for terms.
Term: Greenhouse Effect
Definition:
The process by which certain gases in the Earth's atmosphere trap heat, keeping the planet warm.
Term: Global Warming
The long-term increase in Earth's average temperature due to human activities and greenhouse gas emissions.
Term: Greenhouse Gases
Gases such as CO₂ and CH₄ that trap heat in the atmosphere and contribute to the greenhouse effect.
Term: Climate Change
Changes in global or regional climate patterns attributed largely to increased levels of atmospheric carbon dioxide produced by the use of fossil fuels.
Term: Renewable Energy
Energy from sources that are naturally replenished, such as solar, wind, and hydropower.
Flash Cards
Glossary of Terms