'Ireland is facing significant challenges in meeting its EU future emissions targets for greenhouse gases under the EU Climate and Energy package for 2020.'
(www.epa.ie)
(i) Explain the underlined term - Leaving Cert Chemistry - Question A - 2015
Question A
'Ireland is facing significant challenges in meeting its EU future emissions targets for greenhouse gases under the EU Climate and Energy package for 2020.'
(www.e... show full transcript
Worked Solution & Example Answer:'Ireland is facing significant challenges in meeting its EU future emissions targets for greenhouse gases under the EU Climate and Energy package for 2020.'
(www.epa.ie)
(i) Explain the underlined term - Leaving Cert Chemistry - Question A - 2015
Step 1
Explain the underlined term.
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Answer
The underlined term refers to 'greenhouse gases,' which are gases that absorb heat in the atmosphere, specifically energy and infra-red radiation. These gases, such as carbon dioxide, methane, and chlorofluorocarbons, trap heat and prevent it from escaping into outer space, thereby contributing to the greenhouse effect and global warming.
Step 2
State one global climate change implication of failure to control greenhouse gas emissions.
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Answer
One significant implication is global warming, which can lead to rising sea levels, increased flooding, and the endangerment of wildlife and natural habitats.
Step 3
Arrange water vapour, methane, carbon dioxide and a typical chlorofluorocarbon, in order of their increasing greenhouse factors.
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Answer
The correct order from lowest to highest greenhouse factors is: carbon dioxide, methane, water vapour, and a typical chlorofluorocarbon.
Step 4
Which of these gases contributes most to the greenhouse effect?
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Answer
Among the mentioned gases, chlorofluorocarbons contribute most to the greenhouse effect due to their potent heat-trapping ability.
Step 5
Describe one way that chlorofluorocarbons are broken down in the stratosphere.
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Answer
Chlorofluorocarbons are broken down in the stratosphere by ultraviolet (UV) radiation. This process leads to the release of chlorine atoms, which can then react with ozone (O3), resulting in ozone depletion.
Step 6
Suggest two ways by which Ireland could reduce its emissions of greenhouse gases.
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Answer
Ireland could ban the use of chlorofluorocarbons (CFCs) and transition to using CFC substitutes or recycle products that contain CFCs appropriately.
Implementing stricter regulations on livestock farming practices to mitigate methane emissions, such as improving waste management systems to capture methane gas.
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