what is meant by the renewable and non renewable sources of energy? Distinguish between them, giving two examples of each
Answers
Answer:
Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. This is usually due to the long time it takes for them to be replenished. Renewable resources are replenished naturally and over relatively short periods of time. sunlight,water
Answer:
Renewable and Nonrenewable Resources
A natural resource is something supplied by nature that helps support life. When you think ofnatural resources, you may think of minerals and fossil fuels. However, ecosystems and the services they provide are also natural resources. Biodiversity is a natural resource as well.
Renewable Resources
Renewable resources can be replenished by natural processes as quickly as humans use them. Examples include sunlight and wind. They are in no danger of being used up (seeFigure below). Metals and other minerals are renewable too. They are not destroyed when they are used and can be recycled.
Wind turbines use a renewable resource
Wind is a renewable resource. Wind turbines like this one harness just a tiny fraction of wind energy.
Living things are considered to be renewable. This is because they can reproduce to replace themselves. However, they can be over-used or misused to the point of extinction. To be truly renewable, they must be used sustainably. Sustainable use is the use of resources in a way that meets the needs of the present and also preserves the resources for future generations.
Nonrenewable Resources
Nonrenewable resources are natural resources that exist in fixed amounts and can be used up. Examples include fossil fuels such as petroleum, coal, and natural gas. These fuels formed from the remains of plants over hundreds of millions of years. We are using them up far faster than they could ever be replaced. At current rates of use, petroleum will be used up in just a few decades and coal in less than 300 years. Nuclear power is also considered to be a nonrenewable resource because it uses up uranium, which will sooner or later run out. It also produces harmful wastes that are difficult to dispose of safely.
Fueling a car using gas
Gasoline is made from crude oil. The crude oil pumped out of the ground is a black liquid called petroleum, which is a nonrenewable resource.
Lumps of coal
Coal is another nonrenewable resource.
Turning Trash Into Treasure
Scientists at the Massachusetts of Technology are turning trash into coal, which can readily be used to heat homes and cook food in developing countries. This coal burns cleaner than that from fossil fuels. It also save a tremendous amount of energy.
Summary
Renewable resources can be replaced by natural processes as quickly as humans use them. Examples include sunlight and wind.
Nonrenewable resources exist in fixed amounts. They can be used up. Examples include fossil fuels such as coal.
Review
Define natural resource. Give an example.
Distinguish between renewable and nonrenewable resources and give examples.
Infer factors that determine whether a natural resource is renewable or nonrenewable.
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