Science Grade 8 Climate

What is the greenhouse effect?

• The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere.

• The greenhouse effect is the process by which plants absorb sunlight and convert it into energy.

• The greenhouse effect is the process by which the Earth's atmosphere traps heat and causes global warming.

• The greenhouse effect is the process by which greenhouse gases are released into the atmosphere.

How does the greenhouse effect contribute to global warming?

• The greenhouse effect has no impact on global warming.

• The greenhouse effect cools the Earth's atmosphere, preventing global warming.

• The greenhouse effect traps heat in the Earth's atmosphere, leading to global warming.

• The greenhouse effect only affects local climates, not global temperatures.

Explain the difference between climate change and global warming.

• Climate change and global warming are interchangeable terms with the same meaning.

• Climate change is a broader term encompassing various changes in climate patterns, while global warming specifically refers to the increase in Earth's average surface temperature.

• Climate change is a short-term phenomenon, while global warming is a long-term trend.

• Climate change refers to changes in weather patterns, while global warming refers to changes in the Earth's atmosphere.

What are greenhouse gases and how do they affect the Earth's climate?

• Greenhouse gases trap heat in the Earth's atmosphere, leading to the greenhouse effect and causing climate change.

• Greenhouse gases are only emitted by natural sources and do not affect climate change.

• Greenhouse gases cool the Earth's atmosphere, leading to global cooling.

• Greenhouse gases have no impact on the Earth's climate.

What are some examples of greenhouse gases?

• Helium (He)

• Water vapor (H2O)

• Oxygen (O2)

• Carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), fluorinated gases

How do human activities contribute to the increase in greenhouse gases?

• Human activities contribute to the increase in greenhouse gases by promoting renewable energy sources

• Human activities contribute to the increase in greenhouse gases by releasing carbon dioxide and methane through processes like burning fossil fuels and deforestation.

• Human activities contribute to the increase in greenhouse gases by reducing waste production

• Human activities contribute to the increase in greenhouse gases by planting more trees

What are the potential consequences of climate change?

• Rising sea levels, extreme weather events, loss of biodiversity, food and water scarcity, health risks

• Increased crop yields, improved air quality, enhanced biodiversity conservation

How can individuals help reduce their carbon footprint?

• Ignore energy-saving practices

• Use public transportation, bike or walk instead of driving, reduce energy consumption, recycle, and support sustainable products.

• Drive more frequently

• Use single-use plastic products

What is the role of deforestation in climate change?

• Deforestation increases greenhouse gas emissions by reducing the number of trees that can absorb carbon dioxide.

• Deforestation leads to an increase in oxygen levels

• Deforestation helps reduce greenhouse gas emissions

• Deforestation has no impact on climate change

Explain the concept of climate mitigation and adaptation.

• Climate mitigation focuses on prevention, while adaptation focuses on resilience.

• Climate mitigation focuses on prevention, while adaptation focuses on mitigation.

• Climate mitigation focuses on adaptation, while adaptation focuses on prevention.

• Climate mitigation focuses on resilience, while adaptation focuses on prevention.