[21/07, 9:53 a.m.] Earlyface group:
Geography Obj:
1 bcacdbceae
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(1)
Measurements
Length=13.5cm
Breadth=13.5cm
New scale 1:100,000
(1c)
50,000/100,000×19cm
=0.5km×19cm
=9.5km
(1dii)
Fishing
3a)
i ) Erosional plains
ii ) Structural plains
3b) *Structural plains*
They are relatively undisturbed horizontal surfaces of the Earth. They are structurally depressed areas of the world that make up some of the most extensive natural lowlands on the Earth's surface.
*Erosional plains*
They are plains that have been leveled by various agents of denudation such as running water, rivers, wind and glacier which wear out the rugged surface and smoothens them. Plain resulting from the action of these agents of denudation are called peneplains (almost plain) while plains formed from wind action are called pediplains
3c)
i ) for farming
ii ) Building industrial Area
iii ) Building residential area
iv ) Grazing Livestock
v ) Settlement
5a)Volcanicity is the process where molten magma or lava forces its way out from the earths crust unto the earths surface,as a result of temperature and pressure.
5b)
-Dikes are tubular in shape and may be only a few centimeters wide.
-Batholith are large/massive plutons that cover an area of an area of atleast 100 km squared when they are exposed on earths surface.
7ai)
Gully erosion Can be defined as the removal of soil along drainage lines by surface water runoff .
7aii)
Sheet Erosion can be defined as the erosion that removes surface material more or less evenly from an extensive area as contrasted with erosion along well-defined drainage lines that produces or enlarges gullies or ravines.
7bi)
Overgrazing occurs when farmers stock too many animals such as sheep, cattle or goats on their land.
7bii)
Overcropping is when the land is being continuously under cultivation and is not allowed to lie fallow between crops.
5c)
i)Earthquake
ii ) fast flood
iii ) Rock falls
iv ) Mud slide
7ci)
I) Planting Vegetation
II) Retaining Walls/Edging
8 a )
1 ) Pointdata exists when a feature is associated with a single location in space . Examples of point features include a fire lookout tower , an oil well or gas activity site , and a weather station.
2 ) Lineardata exists when a feature ' s location is described by a string of spatial coordinates . Examples of linear data include rivers , roads , pipelines , etc .
3 ) Area data exists when a feature is described by a closed string of spatial coordinates. An area feature is commonly referred to as apolygon . Examples of polygonal data include forest stands , soil classification areas , administrative boundaries , and climate zones .
8 b )
1 ) it is crucial to making aerialand satellite imagery, usually raster images , useful for mapping as it explains how other data , such as the above GPSpoints , relate to the imagery .
2 ) it is very essential information may be contained in data or images that were produced at a different point of time .
3 ) it obtained from surveying tools like total stationsmay be given a point of reference from topographic maps already available .
4 ) it can be used to analyze the changes in the features under study over a period of time .
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May 04, 2017, 09:02:19 pm
