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Wednesday, June 12, 2019

NECO 2018 GEOGRAPHY OBJ/PHYSICAL/PRACTICAL AND ANSWERS DUBZ JUNE/JULY

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GEOGRAPHY OBJ:
1-10: BBDEADACAA
11-20: DCDDCEBCAC
21-30: AEECADBBAD
31-40: BADDDCEECE
41-50: DBACACACCB
51-60: EDADACACCC

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GEOGRAPHY THEORY
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1a)
CLICK HERE FOR THE DIAGRAM
1b)
Length of the main road
=22/1*50,000/100,000
=22/1 * 5/10 =2
=22*1/2
=11km

1b)
the drainage pattern of the mapped area is the south east direction of the rivers
1c)
i)lumbering- because of high trees
ii)fishing- because of rivers

(2a)
An equinox is a day when the sun is in its zenith over the Equator, and the Earth experiences days and nights of generally equal length. 

(2b)
(i) An equinox is the time when the sun is nearest or spends the same amount of time at the horizon or the equatorial plane giving equal lengths to day and night while a solstice is the time when the sun is farthest from the equatorial plane causing longer nights and days.

(ii) An equinox happens at the start of spring and fall while a solstice happens during summer and winter.

(iii) Both happen twice every year; an equinox occurs at specific periods of time rather than days while a solstice occurs for several days.

(iv) They are both connected with the seasons oftentimes marking the separation between them. “Equinox” comes from the Latin words that mean “equal” and “night” while “solstice” means “sun” and “to stand still.”

(3a)
(i) The Intermontane plateau: is when a plateau is surrounded by mountains on all sides, it is refers to an Intermontane plateau. Some examples of the Intermontane plateau include the Tibetan plateau and the Bolivian plateaus.

(ii) The Piedmont plateau: a Piedmont plateau is located close to a mountain on one side. Some good examples of
Piedmont plateaus are the Malwa plateau in India, the Patagonian plateau in Argentina and the Piedmont plateau in America.

(iii) The Continental plateaus- when a plateau is surrounded by oceans or plains, it is refers to as continental plateau. Examples of continental plateaus include the plateaus of Western Australia and Africa.

(iv) Dissected plateaus : These plateau are highly eroded plateaus cut by rivers and broken by deep narrow valleys.

(3b)
(i) Plateaus are very important to man because they are rich in mineral deposits as a result of these mineral deposits, many of the mining areas in the world are located where there are plateaus.

(ii) Plateaus are very good sources of minerals such as Iron, copper, gold, diamonds, Manganese, coal, etc.

(iii) Areas that have plateau also have waterfalls as river falls from a great height of the plateau

(iv) Although plateaus are not very good for agricultural activities due to hard rock formation, hence, agricultural activities can be carried out at the base of the plateau where lava soils have deposited.

(4a)  Watershed can be defined as a ridge formed by a chain of mountains, which sends water to two different rivers on either side.

(6a)
(i) Cuspate - the land around the mouth of the river juts out arrow-like into the sea.
Example:
The Ebro Delta


(ii) Bird's foot - the river splits on the way to the sea, each part of the river juts out into the sea, rather like a bird's foot.
Example:
The Mississippi Delta


(6b)
(i) The river must have large load. This will be possible if there is active erosion in the upper and middle stages.

(ii) There should not be extensive deposition in the middle stage eg presence of lake in between or high evaporation rate

(iii) The river’s load must be deposited faster than it can be removed by the action of currents and tides.


(6c)
(i) It provides migratory waterfowl an important stop on the Pacific Flyway.

(ii) It is  recreational destination that attracts tourist

(iii) It is a unique natural resource of local, state and national significance

(7a)
An environmental hazard is a substance, a state or an event which has the potential to threaten the surrounding natural environment or adversely affect people's health, including pollution and natural disasters such as storms and earthquakes.

(7b)
Physical hazards 
Chemical hazards 
Biological hazards 
Cultural hazards

(7c)
(i) Climatic Changes: is a change in the statistical distribution
of weather patterns when that change lasts for an extended period of time.

(ii) Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods.

(iii) Bush Burning: is the act of setting forests, weeds and grasses on fire.

(7d)
(i) Afforestation
(ii) Irrigation

(iii) Rotational/Controlled grazing


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