GEOGRAPHY TOPICAL QUESTIONS AND ANSWERS - ATIKA SCHOOL

Two process through which wind erodes the surface

26/2/2021

KCSE Geography Paper 1 2003 Section B Question 9.

a)(i)Two process through which wind erodes the surface

Deflation
Abrasion
Attrition

(ii) Three ways through which wind transports its load

Suspension

The fine dust particles are lifted and suspended in the air
Eventually they are blown away by wind currents

Saltation

Larger fragments/sand particles are lifted from the ground by eddy action
They are moved in a series of hop(s)/ along with wind currents

Surface Creep

The heavy materials/small stones. Pebbles are dragged along the ground by wind currents

b)(i)How an oasis is forced

A pre-existing depression formed through faulting or otherwise is exposed to wind erosion
Wind eddies removes unconsolidated materials through deflation
As deflation continues, the depression is deepened and enlarged
The process of deflation is aided by weathering
With continued deflation, the level of the water table is reached.
After oozes out of the ground and collects into the depression to form an oasis

)(i)Two process through which wind erodes the surface (ii) Three ways through which wind transports its load b)(i)How an oasis is forced (ii) How zeugens are formed

Name a place in Kenya where tarns are found

21/2/2021

KCSE Geography Paper 1 2005 Section A Question 4.

(a) Name a place in Kenya where tarns are found

Mount Kenya

(b) Describe how a tarn is formed

Snow accumulate in pre- existing depression on the mountain side
The snow action/ navigation/ alternating free-thaw action enlarges the hollow
Plucking process steepens the back wall
A deep armchair shaped depression called corries fills up with molt water forming a tarn

(a) Name a place in Kenya where tarns are found (b) Describe how a tarn is formed

The diagram below represents a barchan. Use it to answer questions (a)

18/2/2021

KCSE Geography Paper 1 2007 Section A Question 3.

The diagram below represents a barchan. Use it to answer questions (a)

The diagram below represents a barchan. Use it to answer questions (a) (a) Name (i) the feature marked X (ii) The air current marked Y (iii) The slope marked Z (b) Give two ways in which wind transports its load

(a) Name
(i) the feature marked X

horns

(ii) The air current marked Y

eddy currents

The diagram below shows ways through which wind transports its load.

9/2/2021

KCSE Geography Paper 1 2011 Section A Question 5.

The diagram below shows ways through which wind transports its load.

The diagram below shows ways through which wind transports its load. (a) Name the three ways labelled E, F and G. (b) Name three features produced by wind abrasion in arid areas.

(a) Name the three ways labelled E, F and G

E - Traction/surface creep
F - Saltation
G - Suspension

(b) Name three features produced by wind abrasion in arid areas.

Rock pedestal
Zeugens
Yardangs
Venitifacts/dreikanters/Einkanter .
Mushroom blocks/Gours
Millet seed/sand grains.

Explain how the following factors influence the amount of underground water in limestone areas:

1/2/2021

KCSE Geography Paper 1 2015 Section B Question 10.

The diagram below represents an artesian basin. Use it to answer question (a).

The diagram below represents an artesian basin. Use it to answer question (a). (a) Identify: (i) the layers marked X and Y. (ii) the process marked Z.

(a) Identify:
(i) the layers marked X and Y.

x - Impermeable rocks
y-Aquifer

(ii) the process marked Z.

z - Percolation

(b) Explain how the following factors influence the amount of underground water in limestone areas:
(i) rainfall;
(ii) vegetation cover.

(i) Rainfall

When rains last for long hours it enhances infiltration thereby replenishing the underground water sources.
Heavy rains saturate the surface blocking air spaces thus reducing the rate of infiltration/leading to low amount of underground water.
Little rainfall/no rainfall leads to low amount of under ground water.

(ii) Vegetation cover

Presence of vegetation cover reduces the speed of surface runoff hence increasing the rate of infiltration/leading to high amount of underground water.
Presence of vegetation cover breaks the force of raindrops giving water more time to infiltrate hence increasing the amount of underground water.
In areas of scanty vegetation/on bare ground the surface runoff is high hence reduce rate of infiltration/leading to low amount of underground water.
Presence of vegetation cover provide shade in the ground reducing direct loss of water through evaporation hence increasing the rate of infiltration leading to high amount of underground water.

The diagram below shows some features found in a Karst scenery

21/1/2021

KCSE Geography Paper 1 1997 Section A Question 3.

The diagram below shows some features found in a Karst scenery

Name the features marked X,Y and z (3mks)

X – Stalactite
Y – Stalagmite
Z – pillar / limestone pillar / limestone column