1.
What is one example of Biomass?
Correct Answer
B. Trees
Explanation
Biomass refers to organic matter, such as plants and trees, that can be used as a renewable energy source. Trees are a prime example of biomass because they can be harvested and converted into various forms of bioenergy, such as wood pellets or biofuels. They store energy from the sun through photosynthesis and can be utilized for heating, electricity generation, or as a feedstock for bio-based products.
2.
Which example is NOT a renewable resource?
Correct Answer
D. Uranium (Nuclear)
Explanation
Uranium (Nuclear) is not a renewable resource because it is a finite source of energy that is obtained through mining and extraction processes. Once the uranium is used to generate nuclear energy, it cannot be replenished or reused. In contrast, trees, wind, and solar energy are considered renewable resources because they are naturally replenished and can be used repeatedly without being depleted.
3.
Which of the following is NOT a renewable energy source?
Correct Answer
D. Natural gas
Explanation
Natural gas is a fossil fuel, formed from the remains of ancient organisms over millions of years. It is a finite resource that cannot be replenished at a rate comparable to its consumption, making it a nonrenewable energy source. Solar, wind, and hydroelectric power, on the other hand, are renewable sources that can be replenished naturally.
4.
All are examples of Nonrenewable energy sources EXCEPT...
Correct Answer
C. Hydropower
Explanation
Hydropower is the exception among the given options because it is a renewable energy source, unlike coal, petroleum, and uranium. Hydropower harnesses the energy from flowing or falling water to generate electricity, and this process can be repeated indefinitely as long as there is a constant supply of water. In contrast, coal, petroleum, and uranium are nonrenewable energy sources that are finite in quantity and take millions of years to form. Once these resources are depleted, they cannot be replenished within a human lifespan.
5.
What is one disadvantage of renewable energy?
Correct Answer
D. Most sources are expensive to get started.
Explanation
Renewable energy sources, such as solar or wind power, often require a significant initial investment for installation and setup. This cost can be a major disadvantage, particularly for individuals or businesses with limited financial resources. The high upfront expenses may deter some people from adopting renewable energy, especially when compared to traditional fossil fuel sources that have already established infrastructure. Therefore, the statement "Most sources are expensive to get started" accurately reflects one of the disadvantages of renewable energy.
6.
Electricity is found in which part of an atom?
Correct Answer
B. Electron
Explanation
Electricity is found in the electron of an atom. Electrons are negatively charged particles that orbit around the nucleus of an atom. When electrons move from one atom to another, it creates an electric current, which is the flow of electricity. Therefore, the presence and movement of electrons are responsible for the existence of electricity.
7.
What is one use of hydrogen?
Correct Answer
C. Rocket power
Explanation
Hydrogen is commonly used as a fuel in rockets due to its high energy content and the fact that it can easily combine with oxygen to produce water vapor, which is a clean byproduct. Rockets use hydrogen as a propellant in their engines to generate thrust and propel the spacecraft into space. This makes it an important and widely recognized use of hydrogen.
8.
How is geothermal energy harvested? (How do we get it?)
Correct Answer
B. The heat from the earth boils water to create steam.
Explanation
Geothermal energy is harvested by utilizing the heat from the earth to boil water and create steam. This steam is then used to drive turbines and generate electricity. Unlike solar panels that collect sunlight or drilling for and burning it like coal or wood, geothermal energy relies on the natural heat from the earth's core to produce power.
9.
Over the years, oil and gas companies have made us believe we are running out of oil. What could be one reason why they are telling us this?
Correct Answer
D. So government will allow them to drill in more areas.
Explanation
The reason why oil and gas companies would tell us that we are running out of oil is so that the government will allow them to drill in more areas. By creating a perception of scarcity, these companies can justify the need for expanding their operations and accessing new oil reserves. This would ultimately benefit their business interests and ensure a continued supply of oil for their operations.
10.
Nuclear energy is the splitting of uranium atoms in order to create heat.
Correct Answer
A. True
Explanation
Nuclear energy is generated through a process called nuclear fission, which involves splitting uranium atoms. This splitting releases a tremendous amount of heat energy, which is then used to generate electricity. Therefore, the statement that nuclear energy is the splitting of uranium atoms to create heat is true.
11.
A windmill is an example of a turbine.
Correct Answer
A. True
Explanation
A windmill is an example of a turbine because it converts the kinetic energy of the wind into mechanical energy, which can be used to generate electricity or perform other tasks. Turbines are devices that extract energy from a fluid flow and convert it into useful work, and windmills do exactly that by harnessing the power of the wind. Therefore, it is correct to say that a windmill is an example of a turbine.
12.
A generator needs a magnet in order to produce electricity.
Correct Answer
B. False
Explanation
A generator does not require a permanent magnet to produce electricity. Generators work on the principle of electromagnetic induction, where a magnetic field is used to generate an electrical current in a wire or conductor. This magnetic field can be produced in various ways, such as by using an electromagnet (a coil of wire with an electric current running through it) or by other means like moving a conductor through a magnetic field.
While some generators may use permanent magnets or electromagnets in their design, they can also generate electricity without a permanent magnet. The key is the relative motion between the magnetic field and the conductor, which induces an electric current according to Faraday's law of electromagnetic induction.
13.
Everything that has mass in the universe has matter.
Correct Answer
A. True
Explanation
This statement is true because matter is defined as anything that has mass and takes up space. Therefore, everything that has mass in the universe is considered to be matter.
14.
A geologist is a scientist who studies plants.
Correct Answer
B. False
Explanation
The statement is false because a geologist is a scientist who studies rocks, minerals, and the Earth's structure, not plants.
15.
What is one disadvantage of using hydropower?
Correct Answer
C. Building dams can damage natural wildlife and water systems like lakes and rivers.
Explanation
Building dams can damage natural wildlife and water systems like lakes and rivers. When a dam is constructed, it can lead to the displacement of various animal species and disrupt their habitats. The creation of reservoirs can also alter the natural flow of rivers, affecting the ecosystems and potentially causing harm to aquatic life. Additionally, the construction of dams can result in the loss of scenic landscapes and recreational areas.
16.
Which product is petroleum NOT used for...
Correct Answer
A. Aluminum Cans
Explanation
Petroleum is not used for the production of Aluminum Cans. Aluminum is derived from bauxite ore through a process called smelting, which does not involve the use of petroleum. Aluminum cans are widely used for packaging beverages and other products due to their lightweight, durability, and recyclability. The production of aluminum cans involves mining bauxite, refining it into alumina, and then smelting it to obtain aluminum. Petroleum, on the other hand, is commonly used in the production of plastic bags, gasoline, and wax.
17.
Why is biomass still an important energy resource today?
Correct Answer
B. Many people don't have access to other energy resources.
Explanation
Biomass is still an important energy resource today because many people don't have access to other energy resources. This means that biomass provides a reliable and accessible source of energy for those who cannot rely on other forms of energy. Additionally, biomass is easy to replant and grow, making it a sustainable and renewable energy option. The fact that it keeps lumberjacks employed is not a valid reason for biomass being an important energy resource.
18.
When compared to gasoline and coal, natural gas is the cleanest fuel we can burn.
Correct Answer
A. True
Explanation
Natural gas is considered the cleanest fuel when compared to gasoline and coal due to its lower carbon emissions. When burned, natural gas releases fewer greenhouse gases, such as carbon dioxide and methane, which contribute to climate change. Additionally, natural gas combustion produces less air pollutants, such as sulfur dioxide and particulate matter, that are harmful to human health and the environment. Therefore, it is true that natural gas is the cleanest fuel among these options.
19.
Nuclear power is the energy created from which element?
Correct Answer
D. Uranium
Explanation
Nuclear power is the energy created from uranium. Uranium is a radioactive element that undergoes nuclear fission, releasing a large amount of energy in the process. This energy is harnessed in nuclear power plants to generate electricity. Other elements like helium, hydrogen, and iron do not possess the necessary properties for nuclear power generation.
20.
Even though it is not the main reason, people against solar and wind energy argue that wind mills and solar panels are ugly and an eye sore.
Correct Answer
A. True
Explanation
One possible explanation for the answer being true is that aesthetics can be a subjective matter, and some people may find wind mills and solar panels visually unappealing. While this may not be the main reason for opposing solar and wind energy, it can still be a factor that some individuals consider when forming their opinions.