Friday 1st June 2018
Paper III & I: Objective & Practical / Physical – Geography – 10:00am – 12:30pm
Confirmed Geo obj
(1)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.
(2)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.
(3)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.
(4)Dissected plateaus : These plateau are highly eroded plateaus cut by rivers and broken by deep narrow valleys.
(1)Plateaus are very good sources of minerals such as Iron, copper, gold, diamonds, Manganese, coal, etc.
(2)Areas that have plateau also have waterfalls as river falls from a great height of the plateau
(3)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.
(4)Plateaus that are formed from the lava of volcanoes have very fertile soil, making them useful for agriculture
(5)Many plateaus have scenic spots and are of great attraction to tourists. (Good examples are the Grand Canyon and many waterfalls).
READ MORE: NECO 2018 GENERAL MATHEMATICS (OBJECTIVE & ESSAY ) ANSWERS NOW AVAILABLE HERE – June/July
i. Accurate Delta e.g Niger
ii. Bird’s foot delta e.g Mississippi delta
i. Deposition of materials
ii. Flow of water into the ocean
iii. The river flow through the distributaries into the sea
i. To Generate H. E. P
ii. Tourist Center
iii. Deposits of natural resources
Environmental problems or hazards are disasters which affects lives and properties as a result of the action of man and other natural phenomenon.
(1) climatic changes: is a change in the statistical distribution
of weather patterns when that change lasts for an extended period of time.
(2) overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods.
(3) bush burning: is the act of setting forests, weeds and grasses on fire.
(3) rotational/controlled grazing
Drawing – UPLOADING
i)Limestone are all used to neutralise excess acidity of soil in agriculture practice.
ii)Limestone is used as a building material.
iii)It is used in industries to purify iron in blast furnaces.
iv)It used in Glass making.
Drawing – UPLOADING
i)A great circle is the shortest path between two points along the surface of a sphere.
ii)great circle is the intersection of the surface with a plane passing through the center of the planet.
iii)They cross successive meridians at different angles.
i)Great circle are of importance to navigation and aviation.
ii)The shortest route between any two places is along the arc of the great circle which passes through them.
iii)Ships crossing the vast oceans and aircrafts follow the Great circle route in order to save fuel and time.
i)Encroachment : More migration lead to
less availability of land which lead to higher economic value of land.
ii)Pollution: Explosive increase in the urban population without
corresponding expansion of civic facilities such as lack of adequate infrastructure for the disposal of waste results in waste clogging the
natural channels and storm water drains.
iii)Illegal mining activities: Illegal mining
for building material such as sand and quartzite both on the catchment and on the bed of the lake have extremely damaging impact on the water body.
iv)Interference in drainage system:
Drainage congestion caused by badly
planned construction of bridges , roads , railway tracts, hampers the
flow of water and the result is flood.
i)Flooding leads to loss of human life
ii)Flooding leads to damage to property
iii)It leads to destruction of crops
i)Improving Drainage Improving water drainage helps control floods by facilitating easy flow of excess water, especially in urban areas during flash floods.
ii)Building Dikes and Levees Dikes and levees are flood-control structures built to fight river flooding and water surges.
iii)Building Canals; Canals are artificial water channels that can be crucial to flood prevention. Canals facilitate control of water levels passing through, and form linear reservoirs and water locks.
iv)Harvesting Rain Water Harvesting rainwater involves collecting and storing rainwater and can not only prevent floods, it can also curb urban water scarcity.