FORM THREE MONTHLY TEST
GEOGRAPHY
TIME: 1:30 HOURS
FEBRUARY, 2023
INSTRUCTIONS
This paper consists of section A, B and C.
Answer all questions in both sections.
All necessary work and answers for each question must be shown clearly.
All diagrams must be drawn in pencils and labeled with an ink pen.
SECTION A:15 MARKS
1. For each of the items (i) – (x), choose the correct answer from among the given alternatives and write its letter in the answer sheet provided.
i. Which type of mountain is formed when a movement in the Earth’s crust forces the rock to break and form faults?
E. Dormant volcanic mountains
ii. The atmosphere is divided into regions based on its thermal characteristics,chemical composition, movement and density. What is the name of the boundary which separates the mesosphere and the thermosphere?
A. Exosphere
B. Mesopause
C. Tropopause
D. Stratopause
E. Thermosphere
iii. …………….is the example of the metamorphic rock which has undergone metamorphism to form another metamorphic rock.
iv. Catherine and Baraka were arguing over the type of rock which constitutes the largest proportion of the earth’s crust. As a form four student what could you suggest?
D. Carbonic sedimentary rocks
E. Organically sedimentary rocks
v. When two forces act away from each other are known as ……..
vi. The extensive highland areas with more or less uniform summit level bounded by one or more steep slopes are called……….
A. Plateaus
B. Hill
C. Residual
D. Basin
E. Scrap
vii. Which of the following layers of the earth’s interior is made up of SIAL and SIMA?
A. Biosphere
B. Hydrosphere
D. Lithosphere
E. Barysphere
viii. Asha was talking to her friend about the layer of the earth’s atmosphere, she told her friend that the atmosphere is composed of different layers, which layer supports rain formation due to its high amount of water vapour?
A. Troposphere
B. Thermosphere
C. Stratosphere
D. Mesosphere
E. Heterosphere
ix. One of the following is a plutonic intrusive igneous rock
A. Sill
B. Dyke
C. Laccolith
D. Batholith
E. Lopolith
x. Geological time scale is a scheme or chart that indicates age classification of rock and associated geo-morphological and biological events. The period before 600 million years ago has generally been referred to as…
A. Pre-Cambrian era
B. Paleozoic era
C. Mesozoic era
D. Cenozoic era
E. Cambrian era
i |
ii |
iii |
iv |
v |
vi |
vii |
viii |
ix |
x |
|
|
|
|
|
|
|
|
|
|
2. Match the items in COLUMN A with the corresponding items in COLUMN B against its corresponding number.
Column A |
Column B
|
|
A. Laccolith B. Batholith C. Vent D. Dyke E. Magma F. Sill G. Volcano H. Phacolith |
Column A |
i |
ii |
iii |
iv |
v |
Column B |
|
|
|
|
|
SECTION B :70 MARKS
Short answer questions
3. The aggregate of minerals which occur in solid form are sometimes occurring due to cooling and solidification of molten materials within or onto the Earth.
(a) What is the name of this aggregate of minerals which occur due to the process named above?
(b) The type of the concept named in 3 (a) above can sometimes occur within the earth’s crust. Mention and define the types of it.
(c) List down four (4) characteristics of the concept named in 3 (a) above.
4. What do you understand by the following terms;
a) Element
b) Mineral
c) Atmosphere
d) Metamorphism
e) Rock cycle
5. The Maasai around Ol-Doinyo LeNgai Mountain were wondering the way the mountain was ejecting fire and smoke. They believe that the mountain was possessed by bad evils.
a. What geological process was taking place in the area………
b. The geological process named in (a) above is responsible for the emission of superheated water either quietly or forcefully to the surface through a hole.
i. What are the names of the hot water emitted ……… and …………
ii. Outline five conditions for the occurrence of the named superheated water in (i)above.
6. Distinguish between the following;
a) Thermal and dynamic metamorphisms
b) Carbonaceous and calcareous rocks
c) Acidic igneous rocks and basic igneous rocks
e) Vulcanicity and volcanicity.
SECTION C (15 Marks)
7. Ash and Cinder cones, composite cones, crater and Caldera are among the extrusive volcanic features. To what extent are volcanoes useful and a disaster to man or human being? (Three points each).
The End|Get a Copy|Marking Scheme