ZIMSEC O Level Geography Notes: Natural Resources:Energy: Classification of energy sources
- One way of classification is by grouping energy sources into traditional and modern sources.
|Wood fuel||Water (HEP)|
|Crop residues (stalks)||Thermal power from coal, oil and natural gas or wood|
|Cow dung||Tidal power|
- Some sources and types belong to both groups.
- For example canoeing down a river uses the force of the moving water, a very ancient exercise indeed while a hydro-electric power station utilizes water to generate electricity.
- Another method of classification energy resources is to divide them into two groups, renewable and non-renewable.
- Renewable energy sources are those which are infinite and replenish or regenerate themselves naturally as long as they are not over exploited.
- Non-renewable energy resources are exhaustible, getting used up and running out with more exploitation and use.
|Grass/straws||Nuclear (uranium, platinum, strontium, iridium)|
- Energy sources like wood, though renewable, may be exhausted through over-exploitation and overuse.
To access more topics go to the O Level Geography Notes page
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