Temperature is the degree of hotness or
coldness of a body or an object.It is measured
with thermometer
3b)
As height or altitudes increases,temperature
decreases.hence for every 100metres of
ascent,temperature decreases by 0.65 degrees
celcius or 1 degrees celcius for approximately
160metres of ascent.The decrease in
temperature with increasing elevation is called
lapse rate
3c)
Town A:
Temp=50C
Height=sea level
Town B:
Temp=?
Height=4000m above sea level
Recall 1C=160m
Tb=4000m
(Tb*160)/160=(4000*1)/160
Tb=25C
Therefore the temperature of town B is 25
degrees celcius
1a)
Map scale = 1:50000
Map distance =20.5cm
Ground distance =20.5/1 * 50,000/10,000 *
50,000/100,000
20.5/1 * 1/4 =5.125km
1c
– farming due to presence of scattered grass
– fishing due to presence of rivers
-Transportation due to presence of roads
network
-Trading due to presence of market
4a)
Weathering is the process of weakening and breaking up
rocks. It is the physical and chemical breakdown of rocks
and minerals at or near earth's surface.
4b)
- Carbonation
- Oxidation
- Hydrolysis
4c) -Frost action in mechanical weathering is a type of
mechanical weathering where we see the breakdown of
rock due to the expansion of ice.
-Exfoliation in mechanical weathering is the process in
which rocks weather by peeling off in sheets rather than
eroding grain by grain.
Exfoliation can happen in thin layers on individual
boulders, or it can take place in thick slabs
===============
7a)
-Flood
-Earth quake
-Volcanic Eruptions
7b)
- Air pollution cause Acidification:
Chemical reactions involving air pollutants can create
acidic compounds which can cause harm to vegetation
and buildings.
- Air pollucation causes Eutrophication:
Rain can carry and deposit the Nitrogen in some
pollutants on rivers and soils. This will adversely affect
the nutrients in the soil and water bodies. This can result
in algae growth in lakes and water bodies, and make
conditions for other living organism harmful.
- Ground-level ozone:
Chemical reactions involving air pollutants create a
poisonous gas ozone (O3). Gas Ozone can affect
people’s health and can damage vegetation types and
some animal life too.
7c)-Tall chimneys should be installed in factories.
-Better designed equipment and smokeless fuels should
be used in homes and industries.
-Renewable and non- polluting sources of energy like
solar energy,wind energy,etc,should be used.
=======================
5
Draw map of nigeria
ai
-borno
-yola
5aii
-locate oyo and kano
5aiii
-ibadan
-kano
5b
-there will be urban
congestion
-presence of high crime
rate
-there will be low-per-
capital income
5c
-More building should be
constructed
-they should be more
security in the area
-the Government should
provide more Employment
opportunity.
9a
Draw map of Africa
9ai
-locate river nile and
zambezi
9aii
-the aswan high dam and
kariba dam
9b
-they provide employment
oppotunities -they provide
oceanic food
-they aid movement of
people from one place to
another
9c
-they are limited due to
their seasonal nature
-they are characterise due
to their highg dendritics
tricks
-they are swallow in
nature
+++++++++++++++++++++++++++++
Geography (Practical and Physical
Geography) 2.00pm – 3.50pm
+++++++++++++++++++++++++++++++
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