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 Form 3 Geography Sample Exam Questions and Answers

a) List four conditions necessary for the formation of an artesian well.
b) Explain three ways in which ground water is of significance to human activities.

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Answer Text:
a) Aquifer to be sandwiched between impermeable rocks to prevent evaporation and percolation.
b) Aquifer to be exposed in a region which is a source of water e.g. rainy area or lake. c) Aquifer to dip from the region of water intake. d) Mouth of the well to be at a lower level than the intake area to develop hydraulic pressure which will force water out.
d) - Acts as sources of rivers.
- Acts as source of water- wells, springs, boreholes, oases which provide water used in homes
and industries.
- Used for irrigating agricultural land e.g Sahara desert, where dates grow near oases, Taveta-
cotton and bananas are grown using water from springs.
- Settlement – in dry areas, people tend to settle near the springs due to the availability of fresh water.
- Provision of hot water- water from hot springs may be tapped and pumped into houses through pipes to heat up houses during cold seasons e.g Iceland.
- Tourist attraction – Hot springs e.g Olkaria, Lake Bogoria etc, valuable mineral salt are deposited and people exploit them for economic gain.


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