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## How to Get 2019 NECO 2019 JUNE/JULY GEOGRAPHY Question Paper.

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GEOGRAPHY OBJ
1BBABCBDDCA
21BEAEEBDAEC
31BAEABEBCEE

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(1a)Old side = 1:50,000
New side = 1:150,000

Old scale/New scale = 50,000/150,000 = 1/3

This implies that the map will be reduced by 3

Old length = 27cm
New length = 27/3= 9.0cm

New breath = 29/3= 9.6cm

(1b)

(1c) RELIEF AND DRAINAGE OF THE MAPPED AREA
The drainage pattern of the mapped area is dendritic. There is an irregular branching of the tributaries in many directions like the branches of a tree. The south western part of the mapped area is marshy, poorly drained and liable to flooding.
The highest point on the map is on 900ft while the lowest point is on 600ft. There is a pressure of the conical hill on the south western part of the mapped area.

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• 3a)
Outwash Plain
Also called a sandur, an outwash plain is formed by glaciers. Such a plain is formed when a glacier deposits sediments at its terminus. As a glacier moves, it erodes the bedrock and carries the eroded sediments downstream. These sediments are deposited by the meltwater of the glacier at the snout. Outwash plains are a common landform in Iceland. The Skeiðarársandur in Iceland is the world’s largest outwash plain with an area of 1,300 square km.Till Plain
A till plain is also a plain formed by glacial action. Such plains are formed by the deposition of glacial till (unsorted glacial sediment). When a sheet of glacial ice gets detached from the main glacier and melts in place, the sediments are deposited on the ground to result in the formation of a till plain. Such plains can be seen in northern Ohio where they were created by the Wisconsin glaciation.Scroll Plain
Scroll plains are formed in areas where a river meanders across a low gradient. Deposition of sediments at such locations results in the formation of a plain. Oxbow lakes are common occurrences in such areas. The Taieri River forms a spectacular scroll plain near Paerau in New Zealand.
• =================

(5ai)
-Unloading; This is the release of stress in a rock that produces expansion joints can cause exfoliation. In other words reduction in stress occurs when rocks previously buried deeply are exposed due to erosion of overlying rocks, or when ice sheets that bury rocks melt.

-Exfoliation: This is the term used to describe the peeling away of sheets of rock millimeters to meters in thickness from a rock’s surface due a range of physical and chemical processes during exhumation and weathering.

(5aii)
Action of Plants and animals; can be agents of mechanical weathering. In other words the seed of a tree may sprout in soil that has collected in a cracked rock. As the roots grow, they widen the cracks, eventually breaking the rock into pieces.

(5b)
(i) Climatic factors
(ii) Earthquake
(iii) Erosion
(iv) Volcanoes

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No 6.

(Choose 3)

-Abrasion or corrasion – This is when large pieces of bedload material wear away the river banks and bed.

-Attrition – This is when the bed load itself is eroded when sediment particles knock against the bed or each other and break, becoming more rounded and smaller.

-Hydraulic Action – This is when the force of water erodes softer rock.

-Solution or corrosion – This is when acidic water erodes rock.

6b

-wider valleys
-shallower valleys
-meanders
– oxbow lakes.

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*Number 8*

(8a)

Map digitization involves the extraction of data values from graph. It involves importing the graph from a file, defining the axis system and digitizing it automatically or manually

(8b)

(i) Land surveying: This is the process by which measurement of the land is made and then represent such measurement by tables,places or layout for specific purposes.

(ii) Map scanning: Exiting maps of various scales containing different types of information about the area of interest are scanned. The information of these maps can be fed into a G I S

(iii) Tabular data: This involves the use of speed data arranged in tables and such data are analyzed and processed by computer in order to generate useful information

(iv) Field investigation: Computerized information systems for data management may be needed during emergencies.
A data base is operational in this case.

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(Number 7)
*(7a)*
Environmental hazard simply refers to disasters which affect lives and properties within environment as a result of the action of man and other natural phenomena

*(7b)*
*(Pick two)*
(i)Deforestation exposes the land surface to erosion

(ii)It leads to deterioration of environment

(iii)It increase evaporation and lowers the water table

(iv)It leads to reduction of soil nutrient

*(7c)*
*(Pick three)*
(i)Drought threats plant life which leads to crop failure

(ii)It leads to high loss of crops and livestock

(iii)it causes reduction in agricultural productivity

(iv)it causes conflicts between farmers and pastoralists

(v)It can lead to scarcity of food and also lead to desertification

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