(a) List six sources of farm power [3 marks] (b) Explain how five of the sources of farm power listed in 2(a) are utilised on the farm. [5 marks] (c) Give t...
Question 1 Report
(a) List six sources of farm power [3 marks] (b) Explain how five of the sources of farm power listed in 2(a) are utilised on the farm. [5 marks] (c) Give two disadvantages each, of any four sources of farm power listed in 2(a). [8 marks]
Answer Details
(a) Six sources of farm power
- Human (manual) power
- Animal (draught) power
- Mechanical power (tractors, engines, machines)
- Electrical power
- Wind power
- Solar power (and water power is also acceptable)
(b) How five of the sources are utilised on the farm
- Human power: supplies the muscular energy used for operations such as clearing, hoeing, planting, weeding, harvesting and carrying loads with simple hand tools.
- Animal power: draught animals such as oxen, horses and donkeys are yoked to ploughs, harrows and carts to till the soil and to transport farm produce.
- Mechanical power: tractors and engines drive ploughs, harrows, planters, sprayers, harvesters and pumping machines, doing heavy field work quickly.
- Electrical power: runs pumping machines for irrigation, lighting in poultry houses, incubators, grinding and processing machines and refrigeration for storing produce.
- Solar power: provides heat for drying grains and crops, warms brooding houses and, through solar panels, generates electricity for farm use.
(c) Two disadvantages each of any four sources
| Source | Disadvantages |
|---|---|
| Human power | (i) Generates very little power, so work is slow. (ii) Cannot cover large areas and tires quickly. |
| Animal power | (i) Animals fall sick, tire and cannot work all day. (ii) Cannot work on rocky or heavy soils and need feeding and care. |
| Mechanical power | (i) High cost of purchase, fuel and maintenance. (ii) Requires skilled operators and causes soil compaction. |
| Wind power | (i) Unreliable because it depends on the presence of wind. (ii) Equipment is costly to install and only supplies small power. |
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