energy&power resources

Energy:

Energy is the ability to do work I.e the more energy a device has the more work it can do. When we say that something has energy, we mean that it is capable of producing heat or exerting a force one something else and doing work on it.

Power:

Power is work over time. The power is how much work can be done in a unit time. Or

Power is how much energy is used in a unit of time e.g Kilowatts per Hour.

There are two types of resources of energy in the world renewable energy resources and non renewable energy resources.

Suitability and availability of the resources:

There are pros and cons in using both renewable energy resources and non renewable energy resources. First let s look at renewable energy. The obvious advantage of it is that wind sun ocean and geothermal energy is in abundance and completely free of charge. Secondly renewable energy  source have very low or zero carbon emissions so they are environment friendly. Thirdly it isn't necessary to rely on any country to supply renewable energy resources unlike its non renewable counterparts.

However things are not all so easy with renewable energy resources. First of all it is quite difficult set up to get any of these resources to generate energy and the starting costs can be a huge amount comparatively. As in the case of solar energy it can only be generated during the day which completely excuses night time and the rainy season. And to utilize wind energy we have to depend on strong winds so choosing the right place for the set up can be challenging.

The obvious advantage of non renewable energy resources is that they are ready cheap and easy to use. It is also cheap to convert one non renewable energy type to another. However a major disadvantages of non renewable energy source is that are finite and will expire sometimes in the future petroleum 40 years , Natural gas 165 years , Coal 416 years.this will make a price of these energy sources increase dramatically. They also cause servers environmental changes and are in a large way responsible for climate change and global warming. Non renewable energy resources can have a serious impact on human health as they are certainly not environmentally friendly.