Practical - Geography 2015 Neco Answers Available NowBy BOBRICKY 07:06 Tue, 09 Jun 2015 Comments
Wednesday 10th June Paper III & I:
Objective & Practical /
Physical â€“ Geography â€“ 10:00am â€“
Twilight: this is a period between
sunset and complete darkness while
dawn is refers to the brief period
between sunrise and full daylight
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.
The sun's rays are directly overhead
along the Tropic of Cancer (the latitude line at 23.5Â° north)
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.
it causes seasons:in temperature
countries of the world,the revolution of the earth causes four seasons
whereas in tropical region like west africa there are two seasons
-rainy season and the dry season.
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.
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.
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.
they carve out channels as they flow
and they transport and deposit
materials for very great distance often hundreds or thousands of kilometre.
(i)the shape of of the river channel or
valley:this factor affects the amount of energy a river has for erosion and
the volume of water released:the
higher the volume of water released by a river,the higher the velocity
the amount and size of materials:the
great the speed of a river,the greater
the materials or load it can move
the slope of the river valley:the
steeper the slope or gradients,the
higher the speed or velocity of the
water in the river
(ii) V-shaped valley
(ii) River cliff and slip-off slopes LOWER
(i) Ox-bow lakes
(ii) the flood plain
environmental hazards simply refers
to disasters which affect lives and
properties within environment as a
result of the action of man and other
excessive bush-burning may result in
over-grazing leaves the soil bare and
makes wind erosion very effective
over cultivation of the soil,most
especially in the sahel region
deforestation i.e cutting down of
trees can also encourage desert
changes in climate from wet to dry
may result in desert encroachment
afforestation i.e the planting of trees
to reduce the hardship
irrigation scheme could be introduced
to encourage the growth of vegetations
conservation of trees,surface and
creation of shelter belts.
THIS YOUR TIME MY BROTHERS AND SISTERS
Geography type C.
VERIFY GEOGRAPHY OBJ TYPE B
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