Free School Management System
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SECTION A (40 Marks)Answer all questions in this section
This is a celestial / heavenly body that rotates on its axis and orbit around the sun.
-They orbit / revolve around the sun
- Some have satellites
-Each moves on its own orbit
-They are at equidistance
-Made up of rocks which are fluid /semi solid
-The rocks are hot with Temperature ranging from 10000c – 30000c
-Thickness of 2900km
-The crustal rocks are exposed to the atmosphere therefore cool
-The crustal rocks are hot under pressure/ no overlying material hence cool
-They cooled faster and therefore solidified
-This means renewal of the river’s erosive activities / processes due to Eustatic and dynamic changes
-Through Abrasion / corrosion – where the river uses its load to smoothen
-Solution / corrosion where the river solves soluble rock minerals and carries them in solution
-Hydraulic where the river exerts pressure in the cracks forcing the rocks to crumble
Nunataks are mountain peaks that project through the sheet while pyramidal are glaciated/eroded mt. peaks
This refers to the disintegration of rocks / breakup of rocks with the influence of living organisms.
-This occurs in jointed rocks
-Changes in temperate (cooling/heating) makes the rocks to expand and contract
-The joints will enlarge
-The rocks will break in blocks (rock blocks) hence block disintegration
SECTION B (60 Marks)Answer question 6 and any two other questions
(i) Human feature in grid square 4782
-Settlement / Houses
-Other tracks (footpaths)
-Air photo principal point
ii) Latitude& Longitude of SE corner
C (i) Relief of the area covered by the map
- There are many hills in the areas covered by map area Kirui, Kanje and Nduguru
- The area has steep slopes
- There are many valleys cutting through the landscape
- The area generally slopes to the east
- The highest area is 2640m and the lowest is about 940m.
- There are depressions on the map especially to the west.
(ii) Three natural vegetation
- Forest vegetation
- Scrub vegetation
- Woodland vegetation
- Bamboo forest
- Religion rehabilitation
a) i) what is a rock this is an aggregate of one or more minerals/it is an aggloramation of minerals.
ii) Characteristics of minerals
-they have specific colour
-they have a luster-ability to reflect light
-they vary in hardness
-they have specific cleavage-ability to break a long a preferred direction
-they have the ability to break (fracture) when not controlled by cleavage
-they have specific density
-they have different rates of transparency/translucent/opaque
b) i) Rocks marked X, Y, Z
X – Sedimentary rock
Y – Igneous rock
Z – Metamorphic rocks
ii) Why rocks X are common at the coast
- the rocks are sedimentary - coastal region is a lowland hence is deposition - coastal is close to the Indian ocean-common marine deposition
c) (i) What is metamorphism this is an internal process where the existing rocks are forced to change/transform to new different rocks due to great heat and pressured or both
(ii) Three processes of metamorphism
- thermo metamorphism
– great heat due to intrusion of volcanic rocks will force the original rocks to change e.g. sandstone change to quartzite.
- Dynamic metamorphism – great pressure due to compression/sheering forces rocks to change to new rocks.
- Thermo-dynamic metamorphism- caused by both great heat and pressure to make rocks change s e.g. granite to Gneiss or clay to slate
- Meta somatic metamorphism
– where hot gases force rocks to change.
- Some rocks contain vulnerable minerals which are mined and minerals are used for varies purposes by purple
- Some rocks like trachyte, elonolite or marble land used by purple for building purples
- Rocks weather/break down to form soil which is used for various agriculture purposes
- Some rocks (impermeable) store water as underground water which is used for industrial/domestic purposes
a) i) What is a desert this is a land surface area that is void of/or has minimal vegetation due to insufficient precipitation/minimal rainfall.
ii) Desert surfaces -Reg -Erg
. - winds are strong in hot deserts due to variation of pressure gradients
- the absent vegetation makes winds to be more effective
- wind is the dominant agent in hot deserts do not exist
- The acquitter rocks is sandwiched between the impermeable rocks
- Due to compression, this rocks and fold to form a basin.
- The acquitter rocks are exported to the surface in the highland where there is
- A phacolith is a sourcer shaped volcanic strata in a syncline while phacolith one horse-shoe shaped lava strata in the anticline
- Some batholiths are exposed on the earth surfaces as granite for which are unique and attract tourists.
- Batholiths formation may lead to formation of metamorphic rocks rich in valuable minerals which are mined
- When batholiths are exposed on the earth’s surface, they are carried to provide building materials
- Batholiths rocks are weathered to form soils used for agriculture
this is an internal land forming process where gaseous, liquid and solid materials and forced on to the earth surface on into the crustal rocks due to great heat and pressure.
ii) Characteristics of basin lava
- they contain 45-52% of silica - it is very fluid
- It flows for long time before they solidify (low viscosity)
- It is very mobile.
- formed when ultra-basic lava is extruded on the earth surface
- the lava is extruded through the cracks or fissure
- the basic lava will spread over long distances before it solidifies
- successive eruption will layers of lava that will make the land level/plain
d) i) Use of the hypothesis
-it is used as a guide in their research
-it is an operational principle for their research
ii) Preparation for fieldwork with their teacher.
-preparation of the objectives/questionnaire
-making a pervist/reconnaissance
-formation of discussion groups
-asking for demission for the head/local administrative
-developing a work schedule.
iii) Main problems of field study.
-climbing the steep slopes of the Tors
-dangers from rock fall
-heavy/continuous rainfall disrupted their study
-thicket vegetation on the hills slaved down their study
i) Climatic region on the map.
1. Mediterranean climate 2.
3. Arid/semi arid climate
4. Tropical climate
5. Equatorial climate
6. Warm temperature (mountain)
this is the tropical equatorial climate with the following characteristics;
- The region expenses very high rainfall above 1500mm
- Rainfall is experienced throughout the year
- Rainfall occurs in two maxima’s
- Converted rainfall is common - Temperatures are warm-hot 240-320C
- The region experiences low atmospheric pressure
- There are weak winds (doldrums)
- The area experiences high humidity.
iii) Main factor influenced climate 6.
b) How vegetation his adopted in the hot deserts of Namib/Sahara
- some plants have long tap roots to reach the deep water table
- some have inverted stomata to reduce water loss.
- some plants have rough backs to avoid water loss and protection
-some trees have succulent trunks/stem/leaves to store water
-seeds of some plants remain until when rare rain occurs
-some plants are thorny to reduce water loss/protection
-some plants/trees are deuduons, most of the year to prevent transpiration
c) i) Water towers in Kenya
- Mt. Elgon tower
- Mau tower
- Abadares tower
- Mt Kenya tower
- Cherengany tower
ii) Measures the government has taken to conserve forest.
- Encouraging people to plant trees
- Encourage people to change to agro forestry
- Formation of non-governmental groups e.g. green belt group involved in planting trees
- Evicting people who have encouraged on forest land
- Protecting forest reserves
- Mass education of importance of forest
- Introduction in the education curriculum forestry as discipline up to university