Question

name any four non-renewable sources of energy and write down the benifits​

Answer 1

Answer:

Explanation:

The most popular renewable energy sources currently are:

1. Solar energy.
2. Wind energy.
3. Hydro energy.
4. Tidal energy.
5. Geothermal energy.

Its Benefits are:-

1. Solar Energy

Sunlight is one of our planet’s most abundant and freely available energy resources. The amount of solar energy that reaches the earth’s surface in one hour is more than the planet’s total energy requirements for a whole year. Although it sounds like a perfect renewable energy source, the amount of solar energy we can use varies according to the time of day and the season of the year as well as geographical location. In the UK, solar energy is an increasingly popular way to supplement your energy usage.

2. Wind Energy

Wind is a plentiful source of clean energy. Wind farms are an increasingly familiar sight in the UK with wind power making an ever-increasing contribution to the National Grid. To harness electricity from wind energy, turbines are used to drive generators which then feed electricity into the National Grid. Although domestic or ‘off-grid’ generation systems are available, not every property is suitable for a domestic wind turbine.

3.Hydro Energy

As a renewable energy resource, hydro power is one of the most commercially developed. By building a dam or barrier, a large reservoir can be used to create a controlled flow of water that will drive a turbine, generating electricity. This energy source can often be more reliable than solar or wind power (especially if it's tidal rather than river) and also allows electricity to be stored for use when demand reaches a peak. Like wind energy, in certain situations hydro can be more viable as a commercial energy source (dependant on type and compared to other sources of energy) but depending very much on the type of property, it can be used for domestic, ‘off-grid’ generation.

4. Tidal Energy

This is another form of hydro energy that uses twice-daily tidal currents to drive turbine generators. Although tidal flow unlike some other hydro energy sources isn’t constant, it is highly predictable and can therefore compensate for the periods when the tide current is low.

5. Geothermal Energy

By harnessing the natural heat below the earth’s surface, geothermal energy can be used to heat homes directly or to generate electricity. Although it harnesses a power directly below our feet, geothermal energy is of negligible importance in the UK compared to countries such as Iceland, where geothermal heat is much more freely available.

Hope it helps you!

Answer 2

Answer:

(i) Coal : It is cheaper and easily accessible. (ii) Oil : It is excellent sources of energy for our transportation.

(iii) Natural Gas : It is cleaner burning than gasoline, but does produce Carbon dioxide, the main greenhouse gas and it has high calorific   value.  

(iv) Nuclear Fuel : Nuclear fuel used in nuclear power stations does not burn and hence no waste gases are produced.

Explanation: