1.
What is global warming?
Correct Answer
A. The earth is getting warmer.
Explanation
Global warming refers to the long-term increase in the average temperature of the Earth's climate system. The correct answer states that the Earth is getting warmer, which aligns with the concept of global warming. This indicates that there is a gradual rise in the Earth's temperature due to various factors, including greenhouse gas emissions and human activities.
2.
What is the Greenhouse Effect?
Correct Answer
C. A barrier in the atmosphere, letting sun rays in, but not out.
Explanation
The correct answer is "A barrier in the atmosphere, letting sun rays in, but not out." This explanation accurately describes the greenhouse effect, which is the process by which certain gases in the Earth's atmosphere trap heat from the sun and prevent it from escaping back into space. These gases act as a barrier, allowing sunlight to enter the atmosphere but trapping the heat energy that is radiated back from the Earth's surface. This phenomenon is responsible for the warming of the Earth's surface and is essential for supporting life on our planet.
3.
Why do scientists believe global warming is happening?
Correct Answer
B. Because the planet's temperature is rising.
Explanation
Scientists believe global warming is happening because the planet's temperature is rising. This conclusion is based on extensive research and data analysis that shows a consistent increase in global temperatures over the past century. Various indicators such as melting ice caps, rising sea levels, and changes in weather patterns further support this belief. The correlation between greenhouse gas emissions and the observed temperature rise also strengthens the scientific consensus on global warming.
4.
What may happen if the earth's temperature keeps rising?
Correct Answer
C. Ice sheets melt.
Explanation
If the earth's temperature keeps rising, one of the potential consequences is the melting of ice sheets. As temperatures rise, the ice sheets in polar regions, such as Antarctica and Greenland, can start to melt at a faster rate. This can lead to a rise in sea levels, which can have severe impacts on coastal areas, including flooding and erosion. The melting of ice sheets also contributes to the overall warming of the planet, as ice reflects sunlight back into space, but when it melts, it exposes darker surfaces that absorb more heat.
5.
Which is the safest and least harmful way of making electricity?
Correct Answer
A. Solar Panels.
Explanation
Solar panels are the safest and least harmful way of making electricity because they harness energy from the sun without producing any harmful emissions or waste. Unlike burning coal, which releases pollutants such as carbon dioxide and sulfur dioxide, and nuclear power, which poses risks of accidents and radioactive waste, solar panels provide a clean and renewable source of energy. They are also a sustainable option as they do not deplete natural resources and have minimal impact on the environment.
6.
Which is the most polluting form of transport?
Correct Answer
C. Planes.
Explanation
Planes are the most polluting form of transport due to their high fuel consumption and emissions. They release significant amounts of greenhouse gases, such as carbon dioxide and nitrogen oxides, into the atmosphere. Additionally, planes emit other harmful pollutants, including particulate matter and sulfur dioxide. The large number of flights and the long distances traveled by planes further contribute to their environmental impact. Buses and trains, on the other hand, are generally considered more environmentally friendly options as they can carry more passengers and have lower emissions per person transported.
7.
Which is the most environmentally-friendly form of transport?
Correct Answer
B. Bicyles.
Explanation
Bicycles are the most environmentally-friendly form of transport because they do not produce any emissions or contribute to air pollution. They are powered by human energy and do not require any fuel consumption. Additionally, bicycles take up less space on the road and do not contribute to traffic congestion. They also have a minimal impact on the environment in terms of noise pollution and road infrastructure. Overall, bicycles are a sustainable and eco-friendly mode of transport.
8.
How will the weather change?
Correct Answer
C. More extreme weather conditions like floods, storms and heat waves.
Explanation
The correct answer is "More extreme weather conditions like floods, storms and heat waves." This answer suggests that the weather will become more intense and unpredictable, with an increase in occurrences of floods, storms, and heat waves. This implies that there will be a higher frequency and severity of extreme weather events, which can have significant impacts on the environment and human populations.
9.
If humans are to avoid catastrophic climate change, they need to...
Correct Answer
C. Decrease global greenhouse gas emissions.
Explanation
In order to avoid catastrophic climate change, humans need to decrease global greenhouse gas emissions. This is because greenhouse gases, such as carbon dioxide, trap heat in the Earth's atmosphere and contribute to global warming. By reducing these emissions, such as through transitioning to renewable energy sources and implementing energy-efficient practices, we can mitigate the effects of climate change and work towards a more sustainable future.
10.
One possible way of reducing carbon dioxide emissions is by...
Correct Answer
A. De-carbonizing energy production.
Explanation
De-carbonizing energy production refers to the process of shifting from carbon-intensive energy sources, such as fossil fuels, to cleaner and renewable energy sources, such as solar, wind, and hydroelectric power. By doing so, the amount of carbon dioxide emissions released into the atmosphere is significantly reduced. This is an effective way to combat climate change and mitigate the harmful effects of greenhouse gas emissions. Stopping energy consumption entirely or relying solely on nuclear energy would not address the issue of carbon dioxide emissions.