Free School Management System
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SECTION A: (30 Marks)(Answer all the questions in this section)
a) Describe what the diagram indicates in relation to the shape of the earth . (2 mks)
- An observer standing at the shore sees the smoke, funnel and mast before the rest of ship is visible . This indicates that the surface of the earth is curved. (2 mks)
i) Name one section of the earths crust (1mk)
-Sima . (1x1=1mk)
ii) State two sources of information about the interior of the earth. (2 mks)
-seismetic waves of earthquakes.
-Volcanic materials brought to the surface through eruptions.
-Drilling into the crut to the mantle to obtain materials.
-Study of deep seas and ocean beds.
-Materials obtained from deep mines.
-Carrying out sesmic experiments
SECTION B: (70 Marks)(Answer question 6 and any two other questions in this section)
i) Identify the part labeled P, Q, R, S, T (5MKS)
- P - Dam
- Q -All weather road, loose surface
- R – Riverine trees
- S - District boundary
- T – Dip (5mks)
ii)Name one type of vegetation found in the represented by the rectangle (1mk)
- Scattered trees
- Riverine tree 1x1 =(1mk)
d) Describe the drainage of the area covered by Kitale map (6mks)
-The area has several dams
-The area has seasonal swamps/papyrus swamps
-The area has many permanent rivers
-The main rivers are koitobos and Noigameget
-Most rivers to the north east originate from the forest
- Rivers along kapolet forest form parallel drainage pattern
-Some rivers drain into seasonal swamp/form centripetal drainage pattern 6x1 = (6mks)
a)Define an iceberg (2mks)
- A large mass of ice floating on water/ ocean (2mks)
i)Draw a well labeled diagram of Roche Mountonee (3mks)
-The water is superheated
-and turn into steam , under very high pressure
-The water under pressure jets to the surface through the cracks intermittently.
-This forms a gayser
c) What are earthquakes? (2mks
-These are sudden and rapid movement / vibration of the earth’s crust (2mks)
d) Apart from vulcanicity explain three natural causes of earthquakes (6mks)
-Tectonic movement: convergent plate movement create stress along the edges where two plates meet. The edges thus break / fracture releasing energy which causes earthquake.
-Gravitative pressure: crustal rocks overlying hollow / void below the surface are pulled downward by force of gravity . The sinking crust therefore vibrates causing an earthquake.
-Energy release in the mantle : Radioactive explosion in the mantle may release excessive energy which results into shock waves thus shaking the earth’s crust
-Isostatic adjustment: The earth’s crust is lifted and subsides as it maintains equilibrium.These movements may trigger off minor earthquakes. Factor Explanation – 3 = (6mk