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Neco 2021 Geography Objective/Physical question and Answers

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Neco 2021 Geography Objective and essay question and Answers

NECO GEOGRAPHY OBJECTIVE/PHYSICAL PRACTICAL ANSWERS -zamgist.com.ng

THEORY

(1ai&ii&iiii)

(1bi)
Old scale = 1;50,000
New scale= 1;000,000

Old scale/New scale
50,000/100,000 =1/2

L= 34cm
B= 34cm

L=1/2*34/1=17cm

B=1/2*34cm/1=12cm

New map;
Scale; 1:100,000
L = 17cm
B = 12cm

(1bii)
(i)Relief; the land is on a breakdown. It is suitable for human settlement and establishment of many others social cultural features like schools , market, roads etc.

(ii)Drainage; this refer to water bodies like river and lakes. They can either get water by government water protects or boreholes sunk by individual

(1biii)
(i)Agriculture
(ii)Fishing
(iii)Lumbering
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GEOGRAPHY-OBJ!-By-zamgist.com.ng

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NECO GEOGRAPHY

INSTRUCTION

ANSWER QUESTION ONE AND ANY OTHER THREE QUESTIONS

NUMBER 1 IS COMPULSORY

Then answer any 3 other questions

Making 4 all together
====================================

(3ai)
Mechanically Formed Sedimentary Rocks: These are rocks which are formed as a result of the action of water wind and ice. The following rocks are the results of the action of water which include clays, gravel and aluminum. Those that result from the action of ice are moraine, boulder and gravel.

(3aii)
Organically Formed Sedimentary Rocks: These are rocks which are formed from the remains of plants and animals. Some of the notable rocks formed by the remains of animals are chalk and corals. Those that result from plants include peat and lignite.

(3aiii)
Chemically Formed Sedimentary Rocks: These are rocks which results from chemical composition. The major rocks formed include Borax, gypsium.

(3b)
(i) These rocks are resistance to erosion.
(ii) They occur in strata or layers.
(iii) They contain fossils of plants and animals.
(iv) They are non-crystalline in nature
====================================

(4a)
Temperature and precipitation

(4b)
-MERITS-
(i) It can be adapted for use at different educational levels
(ii) It stresses the link between vegetation and soils
(iii) It makes use of temperature and preciptation figures

-DEMERITS-
(i) It’s more descriptive and generalized with ignoring local and causative factors.
(ii) It neglected air masses
(iii) It is empirical and, therefore, is based on facts and observations

(4c)
(i) A – Tropical Moist Climates (average temperature above 18⁰C in all months)

(ii) Aw – precipitation in driest month less than 60 mm and less than 100 – (r/25)

(iii) C – Moist Mid-Latitude Climates with Mild Winters

(iv) E – Polar Climates (extremely cold summers and winters)
====================================

(7a)
The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun.

(7bi)
Help to reduce temperature: Consequently, decreased ozone in the stratosphere results in lower temperatures.

(7bii)
Protection from harmful ultra violet rays and radiation: The ozone layer protects us from harmful UV rays that can have serious effects on biodiversity, animals and people’s health, including skin cancer and eye cataract.

(7biii)
Absorption of pollutants: The stratospheric layer which occupy the lower part of the atmosphere removes the unwanted pollutants from the earth’s surface.

(7c)
(i) Unregulated Rocket Launches
(ii) Chlorofluorocarbons
====================================

(8a)
Geographical data refers to data and information that has explicit or implicit association with a location relative to Earth.

(8bi)
Vector data file: These data are created by digitizing the base data. They store information in x, y coordinates. Vectors models are used to store data, which have discrete boundaries like country borders, land parcels and roads. Vector models are useful for storing data that has discrete boundaries, such as country borders, land parcels, and streets.

(8bii)
Raster Data file: Raster data stores information of features in cell-based manner. Satellite images, photogrammetry and scanned maps are all raster-based data. Raster models are used to store data, which varies continuously as in aerial photography, a satellite image or elevation values

(8biii)
Geographic database: Geographic databases can store more complex elements needed to describe the world and the roads or buildings built upon it. The basic data element is the point that is the combination of the longitude, latitude, and sometimes the altitude.

(8biv)
Multi temporal data; These are data generally used for change detection. It attaches a time component to information

(8ci)
(i)Topo maps
(ii)Aerial photographs
(iii)Satellite images

(8cii)
(i)It helps to analyze urban growth and the direction of expansion.
(ii)It plays a vital for conserving natural resources and protecting the environment
(iii)It plays an essential role in planning, organizing, and decision making in the banking industry
====================================

Completed!.
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2021 Neco Expo NECO 2021 Geography Questions and Answers
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