Resources Energy Unit 7 Test - 7th

Wind power creates electricity that is safe for the environment. Unlike fossil fuels, which release harmful pollutants and contribute to climate change, wind power generates clean energy without producing greenhouse gas emissions or other pollutants. This makes it a sustainable and environmentally friendly option for meeting our energy needs.

Biomass is a renewable energy source that uses plant and animal waste. It involves utilizing organic materials such as wood, crops, agricultural residues, and animal waste to generate heat and electricity. These materials are burned or converted into biogas through processes like anaerobic digestion. Biomass energy helps reduce reliance on fossil fuels, decreases greenhouse gas emissions, and promotes sustainable waste management.

Coal is a nonrenewable source of energy because it is formed from the remains of plants that lived and died millions of years ago. It takes millions of years for coal to form, making it a finite resource. Once coal is extracted and burned for energy, it cannot be replenished within a human lifespan. Therefore, coal is considered nonrenewable and its use contributes to environmental issues such as air pollution and greenhouse gas emissions.

Hydroelectricity is generated by harnessing the energy from running water. This process involves the use of dams or other structures to capture the kinetic energy of flowing water and convert it into electrical energy. The force of the water turns turbines, which then spin generators to produce electricity. Therefore, hydroelectricity is the correct answer because it directly relates to the generation of energy from running water.

Nonrenewable resources are natural resources that cannot be replaced or replenished once they are depleted. Unlike renewable resources, which can be naturally restored over time, nonrenewable resources have a finite supply. Once these resources, such as fossil fuels or minerals, are exhausted, they cannot be regenerated within a human lifespan. This makes it crucial to manage and conserve nonrenewable resources wisely to ensure their sustainable use and prevent future scarcity.

The correct answer is "to use over and over." Reusing something refers to the act of using it multiple times instead of discarding it after a single use. This practice helps to reduce waste and conserve resources by extending the lifespan of an item. Reusing can involve various methods such as repairing, repurposing, or sharing an item with others.

Conservation means using natural resources wisely. This implies that resources should be utilized in a responsible and sustainable manner, ensuring their long-term availability for future generations. By using resources wisely, we can minimize waste, reduce environmental impact, and ensure the preservation of ecosystems. Wisely using resources also involves promoting efficiency and adopting practices that prioritize the long-term health of the planet.

The term "reduce" means to use less of something. This implies minimizing the amount or quantity of a particular item or resource. By reducing, one aims to decrease consumption or usage, ultimately leading to conservation and sustainability. This can be applied to various contexts such as reducing waste, energy consumption, or water usage.

Recycling is the process of converting waste materials into reusable materials. By recycling, old objects are transformed into new objects, reducing the need for raw materials and minimizing waste. This helps to conserve resources, protect the environment, and reduce the overall impact of human activities on the planet.

Fossil fuels are formed from the remains of plants and animals that lived millions of years ago. Over time, these remains were subjected to heat and pressure, resulting in the formation of coal, oil, and natural gas. These fuels are non-renewable resources and are widely used for energy production due to their high energy density.

The correct answer is "Reduce, reuse, recycle". These three words represent the principles of sustainable living and environmental conservation. "Reduce" refers to minimizing the consumption of resources and generating less waste. "Reuse" encourages the use of products multiple times instead of disposing of them after a single use. "Recycle" involves the process of converting waste materials into new products, reducing the need for raw materials and energy. Together, these three actions help to minimize the negative impact on the environment and promote a more sustainable future.

Nitrogen and sulfur are the two gases that produce acid rain. When fossil fuels are burned, nitrogen oxides and sulfur dioxide are released into the atmosphere. These gases then react with water, oxygen, and other chemicals to form nitric acid and sulfuric acid, which are the main components of acid rain. Acid rain can have harmful effects on the environment, including damaging forests, lakes, and buildings.

The Arizona desert would be a good area for solar energy because it receives abundant sunlight throughout the year. Solar panels can efficiently convert this sunlight into electricity, making it a viable and sustainable source of energy in the region. Additionally, the availability of open spaces and clear skies in the desert allows for the installation of large-scale solar power plants, further maximizing the potential of solar energy generation.

Renewable resources or energy refers to energy sources that can be replenished or replaced quickly. Unlike non-renewable resources like fossil fuels, renewable energy sources such as solar, wind, and hydroelectric power can be naturally replenished in a relatively short period of time. These sources are considered sustainable and have a lower environmental impact compared to non-renewable energy sources.

The term "inexhaustible" refers to something that cannot run out or be depleted. In this context, it means that the resource in question will never come to an end or be exhausted. It implies that the resource is limitless and can be used continuously without the fear of it running out.

The transformation of energy for hydroelectricity starts with the kinetic energy of flowing water. This kinetic energy is then converted into mechanical energy as the water spins the turbine. Finally, the mechanical energy is transformed into hydroelectricity through the generator, which produces electrical energy. Therefore, the correct sequence is kinetic - mechanical - hydroelectricity.

Alternative energy refers to the energy that is derived from sources other than fossil fuels. This can include renewable energy sources such as solar, wind, hydro, and geothermal power, as well as other non-renewable sources such as nuclear energy. The term "alternative" implies that these energy sources are alternatives to the traditional fossil fuels that are finite and have negative environmental impacts. Therefore, alternative energy is a broad term that encompasses all forms of energy derived from any and all resources other than fossil fuels.

The correct answer includes fossil fuels, oil, and metals like iron, gold, and silver. Fossil fuels are nonrenewable resources because they are formed over millions of years from the remains of plants and animals. Oil is also a nonrenewable resource as it takes millions of years to form from the remains of marine organisms. Metals like iron, gold, and silver are nonrenewable because they are extracted from the earth's crust and their supply is limited. Trees, on the other hand, are renewable resources as they can be replanted and regrown.

Trees are an example of a renewable resource because they can be replanted and regrow over time. They provide us with oxygen, wood for construction and fuel, and are important for maintaining biodiversity. Trees also help in reducing carbon dioxide levels and mitigating climate change. Due to their ability to regenerate, they can be sustainably harvested and used without depleting the resource. Therefore, trees are a valuable and renewable resource.

Smog occurs near large cities because it is primarily caused by air pollution from industrial and vehicular emissions, which are more concentrated in urban areas. Smog is formed from fog and smoke because it is a combination of smoke particles and atmospheric moisture, which can create a hazy and polluted air mixture.