1a)
Map scale = 1:50,000
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)
i)farming due to presence of scattered grass
ii)fishing due to presence of river
iii)transportation due to the presence of roads network
iv)trading due to the presense of market
1d)
i)the mapped area is well drained by river owan
ii)the settlement avoid hilling areas of the mapped area
iii)road network are also seen to avioid the moyntain area
iv)river valley are located on the hilly side of the mapped area
v)deltais area are located at the southern par of the mapped area
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8a)
OROGRAPHIC RAINFALL
Diagram
FORMATION
It is formed when ascending air mass meet a barrier. The air masses are forced to rise leading to rainfall in the windward slope.
8b)
i)It leads to formation of rain fall
ii)It brings about cool and mild weather
iii)It reduces amount of sokar radiation but scattering harmful ray.
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3a)
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
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5a)
1-water falls
2-Gorges
3-V.shape valley
4-Vertical erosion
5b)
Oxbowlake:It is usually at the lower course of a river due to the deposition of sediments carried by the river.It is a cresent shaped lakes formed by the running water through a meadow reek.As the river wideans it becomes more noticeable,the reek between two bend of the meadow become reducedreduced4a)
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
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)
(i) Volcanic eruption
(ii) Earthquakes
(iii) Tornadoes
(7b)
(i) Air pollution causes impaired health such as the irritation of eyes, lungs and skin cancer
(ii) It causes suffocation
(iii) It can cause accidents as a result of poor visibility
(7c)
(i) Chemical waste should be discharged high into the air through fume chambers
(ii) Industries should be sited away from residential houses
(iii) Provision of filters or absorbers to reduce pollutants from waste gases.
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