Neco geography exam 2015
Geo. Obj
1-to-10 BEEEEAEDEC
11-to-20 BDDEDDBBEC
21-to-30 AAACECBDAD
31-to-40 BECAABEADE
41-to-50 BDCACBDBEE
51-to-60 AACEEAADEA
GEO TYPE C OBJ:
1-10 CCBADCECBC
11-20 EBEEDDBBCD
31-40 DBADBDBBED
41-50 ECADDCEDEA
51-60 DAEECCCAEC
GEO TYPE B OBJ:
1-10 BBEACDAAAB
11-20 ACDCCEDCCB
21-30 CBBCCDDCCC
31-40 CEEDEEACBA
41-50 DBEDADDBAB
51-60 EDEDCAAADE
GEO TYPE A OBJ:
1 BACEEBDBEC
11 BDDEADBBEC
21 AADAAAACAA
31 BECCBAECBE
41 BDDBDEBCBE
51 EACBDCADBD
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(2a)
Down refers to the brief period between
sunrise full daylight while twighlight refers to
the brief period between the sunlight and
complete darkness
(5bi) Flows and Slumps.
(5bii)
(i) The topography of the earth's surface,
particularly the morphologies of mountain &
valley systems, both on the continents & on
the ocean floors.
(ii) The character/quality of rivers and
streams and groundwater flow
(iii) The forests that cover much of the earth's
subaerial surface
(iv) The habitats of natural wildlife that exist
on the earth's surface, including its rivers,
lakes, and oceans.
(5c) Factors affecting mass movement
(i) Slope:
- Gravity provides the energy to move the
materials.
- Rapid movements (e.g. landslide, slumping)
are commonly found on steep slopes while
slow movements (e.g. soil creep) are found on
gentle slopes.
(ii) Water:
- Rainwater acts as a lubricant to weathered
materials.
- Rainwater adds weight to weathered
materials.
(iii) Rock structure:
- Joints dipping downslope usually assists
landslides, rockfalls, rockslide, rock
creep,etc.
(iv) Vegetation:
- Lack of vegetation cover to hold the loose
particles.
6a) They carve out channels as they flow and
they transport and deposit materials for very
great distance often hundreds or thousands of
kilometre.
6b)
(i) The shape of of the river channel or valley:
This factor affects the amount of energy a
river has for erosion and transportation
(ii) The volume of water released: The higher
the volume of water released by a river,the
higher the velocity
(iii) The amount and size of materials: The
great the speed of a river,the greater the
materials or load it can move
(iv) The slope of the river valley: The steeper
the slope or gradients, the higher the speed or
velocity of the water in the river
==
7a)
Environmental hazards simply refers
to disasters which affect lives and properties
within environment as a result of the action of
man and other natural phenomena.
7b)
(i)
Excessive bush-burning may result in desert
encroachment
(ii)
Over-grazing leaves the soil bare and makes
wind erosion very effective
(iii)
Over cultivation of the soil,most especially in
the sahel region
(iv)
Deforestation i.e cutting down of trees can
also encourage desert encroachment
(v)
Changes in climate from wet to dry may result
in desert encroachment
(7c)
(i)
Afforestation i.e the planting of trees to
reduce the hardship
(ii)
Irrigation scheme could be introduced to
encourage the growth of vegetations
(iii)
Conservation of trees,surface and underground
water
(iv)
Creation of shelter belts.
3a)
Twilight: this is a period between
sunset and complete darkness while
dawn is refers to the brief period
between sunrise and full daylight
3b)
(i)
Because the north pole is titled to ward the
sun at this time, the sun just skims
the horizon but never completely sets.
The Arctic Circle marks the southern
extremity of the polar day which is a day of 24
hours of sunlight.
(ii)
The sun's rays are directly overhead
along the Tropic of Cancer (the latitude line at
23.5° north)
(iii)
it is due to that hemisphere
receiving more direct rays of the sun
than the opposite hemisphere where it
is winter. In winter, the sun's energy
hits the earth at oblique angles and is thus
less concentrated.
3c)
(i) It causes seasons:in temperature countries
of the world,the revolution of the earth causes
four seasons
- autumns,spring,summer,and winter
whereas in tropical region like west africa
there are two seasons
- rainy season and the dry season.
(ii) It determines year:the average time taken
by the earth to move round the sun or having
completed its revolution on its orbit is fixed at
365 1/4days.
(iii) It causes varying length of the day and
night at different time of the year,the actual
length of day and night varies because of the
position of the earth in relation the sun.
(iv) It brings about changes in the altitude of
the midday sun at different times of the
year.as a result of the earth's revolution,the
altitude of the
midday sun changes resulting in Equinoxes
and Solstices.
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