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What do some human activities do?
release polluting gases into the atmosphere.They contribute to atmospheric pollution.
Do the polluting gases have an impact on the environment
yes These gases can have immediate impacts on the environment and human health, and long-term effects on the planet.
what’s the atmosphere?
the place Above the Earth’s surface where there is a layer of gases
What does the atmosphere do?
-provides us with air we need to survive
Acts like a blanket trapping sun's heat for life on earth
Give examples of greenhouse gases
Carbon dioxide , methane
What do greenhouse gases do
They trap heat, so more of these gases that are in the atmosphere, the hotter the Earth gets.
What is global warming?
Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, especially the release of greenhouse gases.
How is methane released
From livestock and rice farming
How is co2 released
is released through burning wood and fossil fuels like coal, oil and natural gas. . Since trees absorb carbon dioxide, deforestation can also increase carbon dioxide in the atmosphere.
What is global warming causing
drastic changes in weather patterns and sea levels, resulting in increased floods, fires and droughts.
Which gas makes up the majority of the atmosphere?
Nitrogen
Greenhouse gases trap heat in the surface of the earth preventing it from escaping back—————-
Out of space
What is the greenhouse effect?
The greenhouse effect is the process by which certain gases in the Earth's atmosphere trap heat, keeping the planet warm enough to support life.
What would happen without greenhouse gases
the Earth would be too cold at night for plants to grow or for animals to survive.
What are the 3 main greenhouse gases
carbon dioxide (CO₂)
methane (CH₄)
water vapour (H₂
How does a greenhouse shelter for plants work
Greenhouses work by trapping heat that has come from the Sun, helping the plants inside the greenhouse to grow.
Say the 3 stages of the greenhouse effect
Are we using more greenhouse gases?
Yes A certain amount of greenhouse gases are needed to keep our atmosphere warm, but human beings have been producing increasing amounts of greenhouse gases over the last two centuries.
The Earth’s layer of greenhouse gases is now too effective at trapping heat and the planet is heating up.
6lthere was no greenhouse effect at all. As a result the Earth was so cold that it was covered with ice
How is co2 produced
volcanoes
Burning fossil fuel
Deforestation
What can burning fossil fuels be used for and what can fossil fuels be used in
release energy,
which can be used to
generate electricity
power engines
Fossil fuels are used in factories and in transport, such as cars, lorries, planes and large ships.
How is methane produced
Rotting plants and animals
microbes that grow in flooded paddy fields (rice)
the digestive processes of livestock in farming
Explain how livestock release methane
Livestock such as cows and sheep produce large quantities of methane in their gut when they digest their food, which their bodies then release as gas
How is more and more methane coming into the atmosphere
Humans continue to consume more and more animal products, such as milk and meat. The increased demand for these products has led to a larger number of livestock being farmed so greater amount of methane
What do greenhouse gases cause
These greenhouse gases are causing a lot more heat energy to be trapped in the atmosphere
What is global warming
The increase in Earth’s average temperature, caused mainly by the build-up of greenhouse gases in the atmosphere.
What is climate change?
Climate change refers to significant long-term changes in global temperatures and weather patterns.
Ways to reduce climate change and why its helpful 6 mark
Choosing to walk or cycle, or to take the bus or train, instead of driving a car - less petrol/diesel used reduces co2 emmions
Buying fewer products like clothing or electronic goods
— less fossil fuels needed to transport to restockless deforestation and mining for raw materials for electronics
Consuming more plant-based products instead of animal products —-decreases the overall emissions from farming livestock
