cameroon gce O level June 2024 geology 2
cameroon gce O level June 2024 geology 2
SECTION A
I. (a) List TWO careers in Geology.
(2 marks)
(b) Define the following branches of Geology,
(i) Palaeontology.
(2 marks)
(ii) Stratigraphy.
(2 marks)
(c) Outline TWO characteristics of Jovian planets.
(2 marks)
(d) State TWO characteristics of secondary waves.
(2 marks)
(Total = 10 marks)
• (a) Define the following terms as used in seismology,
(i) Earthquake magnitude.
(2 marks)
(ii) Earthquake epicentre.
(2 marks)
(b) State TWO characteristics of bivalves.
(2 marks)
(c) List FOUR chemical weathering processes.
(4 marks)
(Total = 10 marks)
J. (a) Define the following terms as used in Crystallography:
(i) Crystal face:
(2 marks)
(ii) Crystal form:
(2 marks)
(b) Differentiate between cleavage and fracture of a mineral.
(2 marks)
(c) Distinguish between marine transgression and regression.
(2 marks)
(d) State TWO effects of earthquakes.
(2 marks)
(Total = 10 marks)
SECTION B
4. (a) (i) List any TWO plates that were formed when Gondwanaland split.
(2 marks)
(ii) State TWO characteristics of convergent plate boundaries.
(2 marks)
(b) (i ) Define the term geologic hazard.
(2 marks)
( ii) Name TWO greenhouse gases.
(2 marks)
(c) List TWO minerals mined in Cameroon.
(2 marks)
(Total = 10 marks)
5. (a) Differentiate between an Anticline and an Anti form.
(2 marks)
(b) Draw a normal fault and label the following parts; the hanging wall and the net slip.
(3 marks)
(c) (i) List THREE types of magma.
(3 marks)
(ii) State with a reason, the grain size of an igneous rock formed in a volcanic environment.
Grain size ( 1 mark)
( 1 mark)
(Total = 10 marks)
Reason
6. (a) (i) Classify metamorphic rocks based on texture.
(2 marks)
(ii) Define a metamorphic aureole.
(2 marks)
Turn Over
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(b) (i) Describe a limestone based on the minerals present and texture.
(I mark)
(I mark)
Minerals present:
Texture:
(ii) State ONE use of limestone.
(2 marks)
(iii) Describe a mudstone.
Mineralogy
Texture (2 marks)
(Total = 10 marks)
SECTION C
7. (a) Study the map extract (Figure 1). Use it to answer questions 7. (a) (i),(ii) and (iii):
Figure I.
(i) Identify ONE type of fold on the map.
(2 marks)
(ii) Insert the fold axis of the fold you have identified.
( I mark)
(iii) State the symmetry of the fold in 7a) (i).
( Imark)
(iv) Identify the feature with X at the center.
( 1inark)
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(b) Study the crystal model (Hgure 2). Use it to answer questions 7. b) (i),(ii) and (iii):
Figure 2
(i) To which system does the crystal model belong?
(1 mark)
(ii) State the crystal form shown by the model.
(lmark)
(iii) Name a mineral that crystalizes in this system.
. (I mark)
(iv) Use letters O and P and label any TWO faces.
(2 marks)
(c) Describe basalts based on the following:
(i) Grain size
Colour
Minerals present
Structure
(d) (i) List ONE diagnostic physical property of haematite.
( I mark)
(ii) How many cleavage planes are found in the mineral biotite?
( I mark)
Arrange the following minerals beginning from the softest to the hardest;
Gypsum, Fluorite and Calcite.
(iii)
( 3 marks)
(Total = 20 marks)
