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100% Real Waec Gce 2015 Geography Practical Answers.




(1)
Diagram
(a)
old scale= 1:50,000
reduction= 1/3
new scale= 1:150,000

(b)
the relief area is characterised by highlands
which
have contour lines of equal intervals of 50m.
the
settlements are located along minor roads and
rivers along the low land

(c)
land use types identified in the mapped area
(i) land for agriculture
(ii)land for settlement
(iii)lland for mining

4) Landforms associated with extrusive.
Volcanicity
1)Composite cones
Ii) Lava domes
Iii) Ash and cinder cones

4b) xteristes and mode of formation of a sill
Sill result when an intrusion of magma is made
horizontally along the bedding planes of
sedimentary rocks
(5a)
mass wasting is defined as the movement of
rock
materials from one place to another under the
influence of gravity.

(5b)
(i) Gradient of the slope: with a steep slope,
rock
materials move faster than on gentle slopes
(ii) Human activities: the activities of man on
the
slope of mountains could promote or reduce
the
movement of rock materials.
(iii) Nature & weight of materials: loose rock
materials tend to move faster than tightly held
materials. the heavier , the weight of
materials, the
slower the movement

(5c)
(i)it lead to loss of farmlands
(ii)it can also result to displacement of
settlement
(iii)it can cause distruption of transportation
network
(iv)it can lead to titting of electric poles.

(6a) Igneous rocks are formed by the cooling
and
solidification of molten rocks called magma.

(6b)
i. Igneous rocks are crystalline in structure ie
they
contain crystals.
ii. They do not occur in layers ie they are non
stratified rocks.
iii. They do not contain fossils.
Iiv. They are usually hard and impervious.

(6c)
(i) Sources of Mineral: Some rocks are
sources of
minerals such as gold, diamond, limestone,
petroleum, etc which can be exported to
provide
foreign exchange to a country.
(ii) Sources of fuel: Sedimentary rocks like
petroleum
and coal are sources of fuel for domestic and
industrial uses.

7a)
i)Sahara (North Africa)
ii)Great australian desert(Australia)
iii)High rate of evaporation
iv)Relative humidity is very low

7c)
i)Possession of long roots to search for water
in the
soil
ii)Presence of few or no leaves at all to prevent
transpiration
iii)Possession of thick succulent stems
iv)Some shed their leaves during drought
8a)
Atmospheric resources are those are those
elements such as wind, water, sunlight, and
gases,
which are of benefit to man , animals, and
plants

8b)
Atmospheric gases ( nitrogen, oxygen, co2,
water
vapour , ozone layer
(i) wind
(ii) rainfall
(iii) solar energy

(8c)
i)oxygen supports animals life
ii) used by plants and animals for respiration
iii) Co2 required by plants for photosynthesis
iv): ozone layer acts as a blanket to the earth
v) rain provides water for human consumption
and
agriculture..


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