Waec 2017 Geography Practical and Physical QUESTION AND ANSWERS Free Expo
Monday, 10th April, 2017
Geography 3 (Practical and Physical Geography) 2.00pm - 3.50pm
1a)
Scale 1:25,000
1b)
i)it has few social amenities
ii)it is a feature of rural settlements
iii)they are only motivate in primary activities like farming lumbering fisht etc
1bii)
i)water transport
1c)
i)dentritic pattern
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3a )
Erosion is the process of eroding or being eroded by wind ,
water, or other natural agents . While Mass movement is
the movement of surface material caused by gravity .
the movement of surface material caused by gravity .
3b )
i ) runing water
ii) winds
iii) waves
vi ) glaciers
3c )
i ) Water
- rainwater acts as a lubricant to
weathered materials .
ii) Vegetation
- lack of vegetation cover to hold the
loose particles .
iii) Rock structure
- joints dipping downslope usually
assists landslides , rockfalls , rockslide ,
rock creep .
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4a)
i)Rarely has fossils
ii)React with acid
iii)have alternate bands of light
and dark minerals
4b)
i)formed through the action of heat and pressure
ii)formed from clay
iii)formed from limestone
4c)
i)rocks are source of minerals eg gold,silver,petroleum etc
ii)rocks are source of materials for construction
iii)rocks serves as raw materials for industry eg cement industry
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7a )
i ) Agricultural Pollution
ii) Oil Pollution .
iii) Radioactive Substances polution
iv ) River dumping pollution
v ) Marine Dumping pollution
7b )
i ) A regular qualitative and quantitative monitoring of fresh
water resources.
ii) Construct proper sanitary landfill
sites.
iii) Investigate ground water quality .
iv ) Provide government help for waste management by
industries .
v ) Throw refuse into garbage cans . Visitors who throw
garbage into pools , lakes , ponds, and even along the
beaches pollute recreational sites on a daily basis
6a)Soil can be defined as the organic and inorganic materials on the surface of the earth that provide the medium for plant growth.
6bii Clay soils with 25-40% clay
These soils have a good ability to transport water by
capillary action from deep layers but the rate is slow, so plant water requirements are not met through capillary water.
2 These soils are darker in colour and soil aggregation is more distinct.
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8)
a) *Causes of Desert Encroachment*
1. Human activities: such activities such as over-grazing, over-cultivation, bush burning, and excessive cutting of firewood greatly reduce the vegetative cover and expose the land to drought and desertification. Examples of areas with desert encroachment are the Sahelian zones of Nest Africa, Ethiopia, Somalia and Sudan.
2. Change in Weather: The frequent and prolonged dry weather increases the aridity of affected areas.
3. The southward movement of the dry sub-tropical high pressure belt results in severe drought in semi-arid regions.
b) *Effects of Desert Encroachment*
1. Large scale disruption of socio-economic life arising from crop failure and shortage of water