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NECO GEOGRAPHY THEORY AND OBJECTIVES 2020

Discussion in 'School Updates' started by Andy, Nov 14, 2020.

  1. Andy

    Andy Drug Lord Jr.Vip

    NECO GEOGRAPHY THEORY AND
    OBJECTIVES 2020


    Neco Geography Questions and Answers for 2020 will be posted here


    Geo-Obj!
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    21ECBECAECDD
    31BAAEECBCDD
    41CCBDBAADDB
    51EEBCEDBBBD

    THEORY-ANSWERS
    (1ai)
    Relief; the relief of the mapped area
    (kashimbila N.W) can be described as
    follows
    (i)A dissected plateaus is found of the
    north central area of the map which
    extended to the Central area.
    (ii)The eastern , western and southern areas
    of the mapped area are mainly lowlands
    with the lowest height of 500m above see
    level
    (1aii)
    Drainage pattern; this can be described in
    the the following ways
    (i)the main river is the katsina ala given and
    other minor ones that empty their water
    into it e;g mku,agbadi,apipo,abagu,kangi,
    etc . The direction of flow of river katsina -
    Ala is from north-west to south - east on
    the map .
    (ii)the drainage pattern of the mapped area
    is dendritic.
    (1aiii)
    Settlement; the settlement pattern of the
    mapped area is displeased on scalloped
    settlement. That is the building are far from
    each other with few social amenities.
    (1b)
    The development of given katsina - ala in
    these stages there are the youthful and
    matured and old age stages.
    The youthful stage mark the source of river
    katsina - ala at bamenda highlands with a
    V-shape valley. The matured stage of the
    rivers is characterized by meanders and U-
    shape valley. The old stage leads to the
    mouth of given katsina - ala (I;e when it
    empties its water to river benue)
    The reasons for the above cycles of
    development of given katsina - ala are;
    (i)Vertical erosion at the youthful stage
    (ii)Lateral erosion and transportation at the
    matured stage
    (iii)Deposition of materials at the old age
    stage.
    =====================================
    (2a)
    (i)changing of the seasons not same
    temperature in different parts of the Earth
    (ii)change of the length of the Day and
    Night during the year
    (iii)change of the position of the midday
    sun and night during the year and in the
    different parts of the Earth
    (iv)Change of the lunar eclipse and marking
    of the year.
    (2bi)
    (i)Equinox refers to a day with an equal
    duration of day and night. We have two
    equinoxes in a year which are:
    -Spring equinox on March 20
    -Autumnal equinox on September 22
    -Examples-
    (i)It could be spring or autumnal.
    (ii)It is equal lengths of day and night
    (iii)the days and nights are equal
    (2bii)
    Solstice is refers to a day with either the
    longest day or the shortest. The two
    solstices in a year are:
    -Winter solstice on December 22
    -Summer solstice on June 21
    -Examples-
    (i)It could be summer or winter
    (ii)It is unequal length of day and night
    (iii)The days are longer in summer and
    shorter in winter.
    (2c)
    (i)Because the changes in hours of daylight
    and in temperature caused by
    revolution and tilt lead to the yearly change
    of seasons at middle latitudes. If Earth’s
    axis were perpendicular to its plane of orbit,
    seasons would not
    occur. In addition, every place on Earth’s
    surface would experience 12 hours
    of daylight and 12 hours of darkness every
    day. On the other hand, if Earth’s
    axis were tilted more than 23.5°, each
    hemisphere would experience hotter
    summers and colder winters.
    (ii)Because On the first day of summer,
    every point on Earth within 23.5° of the
    North Pole experiences 24 hours of
    daylight. The boundary of this region,
    at latitude 66.5° N, is the Arctic Circle. On
    June 21 in the Southern
    Hemisphere, every point south of the
    Antarctic Circle (latitude 66.5° S )
    experiences 24 hours of darkness.
    (iii)Because The hemisphere tilted toward
    the sun receives more direct sunlight and
    thus has warmer temperatures and longer
    days. The hemisphere tilted
    away from the sun receives indirect
    sunlight. That hemisphere has cooler
    temperatures and shorter days. In other
    words it changes the summer to be warm
    and bright and also changes it to be Winter.
    =====================================
    (3ai)
    MODE OF FORMATION
    Metamorphic rocks are formed from pre-
    existing igneous or sedimentary rocks which
    have been changed and pressure. The
    original character and appearance may be
    greatly altered or changed by such forces
    eg clay to slate , Limestone to marble
    (3aii)
    (i) Some may occur in layers or strata
    (ii) They may be hard or soft
    (iii) They are not crystalline in nature
    (iv) May contain Fossil
    (v) Exist in different colours and textures
    (3b)
    (i) Sources of minerals: Some rocks are
    sources of minerals such gold, diamond,
    Limestone, petroleum which can be
    exported to provide foreign exchange
    (ii) Tourist centre: Huge rock masses serve
    as tourist attraction eg Olumo rock in
    Abeokuta
    (iii) Construction purposes: Some rocks like
    granite and sand stone are used for road,
    bridge and building construction after they
    have been quarried
    =====================================
    (7a)
    Environmental conservation is the practice
    of us humans saving the environment from
    the loss of species, and the destruction of
    the ecosystem, primarily due to pollution
    and human activities.
    (7b)
    (i)Water
    (ii)oil
    (iii)coal
    (iv)iron
    (7c)
    (i)Recycling; This is a process by which the
    life of resource is extended by means of
    recycling it or reusing it as an input or
    output. This is applicable only to on-energy
    resources, since the use of a material as an
    energy resource results in its useless
    dissipation into the atmosphere. In other
    words Reprocessing of unwanted products
    (e.g. newspapers, scrap metals, glass and
    sewage etc.).
    (ii)Waste Reduction; waste reduction, it will
    automatically ensure lesser exploitation of
    resources. Waste reduction can be achieved
    by appropriately redesigning industrial
    processes, so that there will be
    technological efficiency in utilizing the
    resource and avoidance of waste to the
    minimum. In other words Further, the waste
    of one industry can be used as the raw
    material of another industry.
    (iii)Material Substitution: the use of a
    material resource can be restricted by
    finding an alternative resource. The problem
    in this is that many materials have extensive
    uses and also joint uses. In other words the
    copper sheet can be substituted by
    aluminium, which at the same time would
    reduce demand for soldering agents made
    from and lead. Aluminium is being
    extensively substituted for tin, particularly,
    in the production of metal cans and
    containers.
    (iv)Rewilding; Allowing areas to restore
    themselves naturally without interference by
    humans (except possible species
    reintroduction)
    =====================================
    (8a)
    (i)Location; The spatial location of features
    are defined by coordinates in a specific
    reference system. In other words they are
    represented by points, lines or polygons
    and geometry of the three dimensional
    representation in space.
    (ii)Data Quality; it refers to the credibility
    and accuracy of the data or more generally
    how good the data is. In other words
    quantitative quality relates to measurable
    components such as spatial accuracy. And
    the qualitative quality consists of those
    non-measured components, which usually
    relates to the entire data set and not to
    specific objects.
    (iii)Generalization; relates to the level of
    scale and details associated with the object.
    Objects may be aggregated from larger to
    lower scale, while the opposite process is
    very limited. For example, if the countries
    layer can be aggregated into a states layer
    but opposite cannot be accomplished
    without external data.
    (iv)Entity versus field based data; The world
    can be represented as a set of discrete
    entities such as forests, rivers, roads and
    buildings.This is refereed to as the Entity
    based approach. In other words the field-
    based approach represents the world as a
    continuous function with attributes that
    vary in space. Natural phenomena such as
    air pollution distribution and terrain may be
    the best represented using this approach.
    (8b)
    Tabulate.
    -Advantage-
    (i)It has the ability of improving the
    organizational integration. GIS would then
    integrate software, hardware and also data
    in order to capture, analyse, manage and so
    display all forms of information being
    geographically referenced.
    (ii)GIS would also allow viewing,
    questioning, understanding, visualizing and
    interpreting the data into numbers of ways
    which will reveal relationships, trends and
    patterns in the form of globes, maps,
    charts and reports.
    -Disadvantage-
    (i)GIS technology might be considered as
    expensive software.
    (ii)It as well requires enormous data inputs
    amount that are needed to be practical for
    some other tasks and so the more data that
    is to put in.
    =====================================
     
    Last edited: Nov 16, 2020

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