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  3. University Of Cape Town (UCT)
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  5. Intro to Earth & Enviro Sci (GEO1009F)

Exam (elaborations)

GEO1009F Exam 2018 Questions
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This is a GEO1009F exam past paper set in 2018. I used this past paper to prepare for my exam which was written in 2023. The exam I wrote consisted of multiple choice questions only. The multiple choice questions in this paper were reused in mine and is VERY LIKELY to be reused in yours which can...

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  • April 17, 2024
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______tylase002________
Student Number
UNIVERSITY OF CAPE TOWN

UNIVERSITY EXAMINATIONS: 12 June 2018

INTRODUCTION TO EARTH & ENVIRONMENTAL SCIENCES

GEO1009F: THEORY

TIME: THREE HOURS


Read the questions carefully before answering. Marks are proportional to the amount of
time allocated given in brackets.


PART 1
Short answers (answers to be written on question paper) (100 minutes)


1. Quartz has a hardness of 3/ 5/ 7/ 9 (circle correct answer), while calcite has a hardness
of 3/ 5/ 7/ 9, and quartz breaks along irregular, curved surfaces called
__conchoidal_____ fracture, while calcite breaks along 3 well-defined ___perfect
cleavage _____________ planes. [2]


2. Name two renewable sources of energy:

______solar_______ and ___________wind______________. [1]


3. Complete the following reactions and give them a name: [3]

CaSiO3 + ________ = SiO2 + _______ Name: ______________

_______ + H2O = CH2O + ________ Name: _________________


4. ___________________ Earth is the name given to when much of Earth was covered
in ice. ___________ refers to the amount of sunlight reflected into space, and
provided a positive /negative (circle correct answer) feedback to the icing over of the
planet. The ice eventually melted because the cold conditions slowed _____________
weathering, while CO2 continued to be emitted by _____________ until the
concentration of CO2 in the atmosphere reached levels to warm Earth through the
____________________ effect. [3]


5. The Last Glacial ___________ was 10/ 20/ 40/ 60 (circle correct answer) thousand
years ago when sea level was 5 m/ 60 m/ 120 m lower than today. Ice sheets are

, dominated by chemical/ physical weathering and their melting results in deposits
called ____________ that are poorly/ well sorted having angular/ rounded rock clasts.
If all of the ice on Earth today were to melt, global sea level would rise 25 m/ 65 m/
125 m. [4]


6. The Malmesbury Group is the oldest rock in the Cape Town area (True or False) and
is a low/ intermediate/ high grade of metamorphic rock having experienced maximum
temperatures of 250 to 300oC. [1]


7. The interior structure of Earth is determined from ___________ waves of which there
are two types that penetrate the deep Earth called ___________ and ______________
waves. These waves indicate that the Earth’s outer core is solid/ liquid. The outer core
is thought to generate Earth’s ______________ field which shields us from the
____________ wind. [3]


8. The oceans contain approximately _______ percent of the water on Earth’s surface.
Of the remaining water, three-quarters is stored as _____________ and most of the
rest is stored as ________________________. One in ______ people on Earth do not
have access to fresh water. [2]


9. ____________ or the remains of living organisms were first used to assign
_______________ ages to rocks. The _______________ ages of rocks in million of
years before the present could only be determined once _________________
elements had been discovered. [2]


10. Define the Anthropocene: [1]

_____________________________________________________________

_____________________________________________________________


11. List the three types of plate tectonic boundaries and give an example of each:

____________________________ ____________________________

____________________________ ____________________________

____________________________ _____________________________
[3]

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