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WAEC 2020 - GEOGRAPHY PRACTICAL ANSWER
WAEC 2020 - GEOGRAPHY PRACTICAL ANSWER

WAEC 2020 - GEOGRAPHY
PRACTICAL ANSWER



ANSWERS:


(1a)
[Click here for the Image]

(1b)
Length of minor road from the dispensary at Uhomara to Ugiavon = 17.5cm on the map

Scale of map = 1:50,000cm
.:. 17.5cm on the ground = 17.5 x 50,000/100,000
= 8.75km

(1c)
Human Features:
(i) Settlements
(ii) School
(iii) Bridge

Physical Features:
(i) River
(ii) Vegetation
(iii) Relief

=============================

(3a)
(i) Latitude
(ii) Altitude
(iii) Ocean currents

(3b)
(i) It has constant high temperature with daily temperature of 26°C with no winter
(ii) It has annual rainfall of over 200cm and rainfall is throughout the year
(iii) It has high humidity all year round with double maxima of rainfall
(iv) It has small annual temperature range of 2°C - 3°C
(v) It has convectional rainfall accompanied by lightening and thunder.

=============================

(4a)
Weathering is the physical disintegration and chemical decomposition of rocks in soil.

(4b)
(i) Temperature
(ii) Rainfall
(iii) Humidity

(4c)
Exfoliation is a form of mechanical weathering in which curved plates of rock are stripped from rock below. Exfoliation process occurs in arid and semi arid areas. When arid and semi amid areas have high day and low night temperatures, rocks alternatively heat and cools. This makes the rock to expand during the day as a result of high temperature and contract during the night. When temperature decreases drastically continuous expansion and contraction leads to the peeling off of the outer layers of the rocks.

=============================

(8a)
Atmospheric pollution refers to the release of a substance into the air in excessive quantities or to the level that is harmful to man, animals and plants.

(8b)
(i) Mobile source eg exhaust
(ii) Area sources eg Bush burning
(iii) Natural sources eg Earthquake, volcanoes
(iv) Stationary sources eg harmful gases from oil refineries and factories

(8c)
(Choose Any Four)
(i) Atmospheric pollution causes impaired health such as the irritation of eyes,lungs and skin cancer
(ii) It causes acid rain which can corrode materials and burn green plant
(iii) It increases and decreases the temperature
(iv) It causes the destruction of the ozone layer
(v) It can cause accidents as a result of poor visibility
(vi) It affects plant growth and aquatic life




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