1.
Ireland accounts for 0.007% of the global population yet produces ___ of all CO2 emissions released into the atmosphere (global emissions).
Correct Answer
E. 0.15%
Explanation
Ireland accounts for a very small percentage of the global population, yet it produces a relatively high percentage of all CO2 emissions released into the atmosphere. The correct answer of 0.15% reflects this disproportionate contribution to global emissions.
2.
Which sector produces the most CO2?
Correct Answer
C. Electricity and Heat
Production
Explanation
The sector that produces the most CO2 is electricity and heat production. This sector includes power plants and other facilities that generate electricity and produce heat. These activities often involve burning fossil fuels such as coal, oil, and natural gas, which release large amounts of CO2 into the atmosphere. The transportation sector also contributes significantly to CO2 emissions, but it is not the sector that produces the most CO2. Manufacturing and construction, as well as residences, also contribute to CO2 emissions, but their impact is generally lower compared to electricity and heat production.
3.
Considering our energy usage, which of the following is true? (You may tick more than one)
Correct Answer(s)
A. New more reliable energy sources must be developed to meet our energy needs.
C. New energy sources must consider more than just how much power or energy can be produced.
D. The use of fossil fuels is damaging to the environment.
Explanation
The current consumption of energy is depleting the earth of its natural resources, this accompanied by the fact that we are damaging the environment in a way that could potential change life as we know it means that we must create and use more energy sources that will not only meet our energy need but also consider other implication such as the environment.
4.
Which of the following is not considered as a renewable energy source?
Correct Answer(s)
A. Coal
D. Oil
Explanation
A non-renewable energy source is something that once used up it is gone and cannot be reproduced. Fossil fuels such as Oil, coal, turf are all non renewable as they take millions of years to form
5.
Coal, oil, natural gas, and propane are fossil fuels. They are called fossil fuels because:
Correct Answer
C. They were formed from the buried remains of plants and tiny animals that lived hundred of millions of years ago
Explanation
Coal, oil, natural gas, and propane are referred to as fossil fuels because they were formed from the buried remains of plants and tiny animals that lived hundreds of millions of years ago. Over time, these organic materials underwent heat and pressure, transforming into the energy-rich substances we extract and use today. This process took place over an extensive period, making them non-renewable resources. The other options, such as being nonrenewable and causing air pollution when burned, are true statements about fossil fuels, but they do not directly explain why they are called fossil fuels.
6.
The burning of fossil fuels produces_________.
Correct Answer
D. All of the above
Explanation
The burning of fossil fuels releases various pollutants into the atmosphere. Sulphur and nitrates are emitted as byproducts of burning fossil fuels, contributing to air pollution. Carbon dioxide (CO2) is also released during the combustion process, which is a major greenhouse gas responsible for climate change. Additionally, the release of these pollutants can lead to the formation of acid rain, which has harmful effects on the environment and ecosystems. Therefore, all of the options mentioned, sulphur and nitrates in the atmosphere, CO2, and acid rain, are produced as a result of burning fossil fuels.
7.
What is Geothermal Energy?
Correct Answer
B. Geothermal Energy is heat from within the earth which can be used to heat buildings or generate electricity
Explanation
Geothermal energy refers to the heat that is generated from within the earth's core. This heat can be harnessed and utilized to heat buildings or generate electricity. Unlike other forms of energy, geothermal energy is renewable and sustainable, as it relies on the natural heat produced by the earth. By tapping into this heat source, we can reduce our dependence on fossil fuels and contribute to a cleaner and more sustainable energy future.
8.
Reports on renewable energy have led to doubts on the efficiency of our current renewable energy sources.
Correct Answer
A. True
Explanation
Some reports on renewable energy sources, such as wind turbine, have shown that current systems are not sufficient to replace traditional energy sources. Reports are often giving mixed results and more research need to be done to
1) Access the efficiency of current renewable energies
2) Develop these to make them more efficient
3) Continue to develop and create more renewable energy sources
9.
How much energy will a DVD player use while on standby?
Correct Answer
E. Up to 85%
10.
The energy saved by recycling one aluminium drink can is enough to run a TV for how long?
Correct Answer
C. 3hours
Explanation
Recycling one aluminium drink can saves enough energy to run a TV for 3 hours. Aluminium is a highly recyclable material, and recycling it requires significantly less energy compared to producing new aluminium from raw materials. By recycling one can, the energy saved can be used to power a TV for 3 hours, contributing to energy conservation and reducing the environmental impact of manufacturing new aluminium.
11.
The amount of energy poured onto the Earth by the Sun every 15 minutes equivalent to what?
Correct Answer
E. World’s energy for a year
Explanation
The correct answer is "World's energy for a year." This means that the amount of energy poured onto the Earth by the Sun every 15 minutes is equivalent to the total energy consumption of the entire world for a whole year. This highlights the immense amount of energy that the Sun provides to sustain life on Earth.