ESS 101 MIDTERM QUESTIONS | FROM QUESTION TO
PERFECTION| EVERY QUESTION SOLVED | EVERY SCORE
SECURED!
Course Code:
Course Title:
Programme:
Academic Year: 2026/2027.
Duration: 2 Hours.
Total Marks: 70%.
Candidate Instructions:
1) Write your Registration Number on every answer booklet used.
2) Answer ALL questions in Section A and ANY TWO (2) questions in Section B.
3) Read each question carefully before answering.
4) Begin each question on a new page.
5) The marks for each question are indicated in brackets.
6) This paper consists of several printed pages, including this page.
7) Ensure your copy is complete before the examination begins.
8) Unauthorized materials and communication with other candidates are not permitted.
Turn Over.
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, Match the magma/lava type with the appropriate geographic/tectonic setting where it likely
formed.
3. Columbia Plateau
4. Asthenosphere
5. Mount Fuji, Japan Answer: 3) basalt
4) periodite
5) andesite
Match the magma type with the appropriate tectonic setting where it likely forms.
1. Iceland
2. Sierra Nevada Batholith
3. Philippine Islands
4. Ural mountains
(basalt, granite, andesite, periotite, andalucite)r Answer: Iceland = Basalt
Sierra Nevada Batholith = Granite
Philippine Islands = Andesite
Ural mountains= granite
The Columbia Plateau is composed of rock rich in: Answer: Basalt
The melting temperature of granitic magma (wet melt) ______________: Answer: increases as
pressure is reduced (as it rises). Therefore it solidifies as it rises and rarely gets to surface. Dry
basaltic magma has opposite effect.
A partial melt of the asthenosphere will not rise toward the surface because _____________.
Answer: the above question is incorrect because an asthenospheric melt will rise towards the
surface
Aa basalts _______. Answer: are blocky textured flows that form as the viscosity increases
during degassing
When two ocean plates converge ___________. Answer: the older plate will be subducted
(because it is more dense)
The most widely accepted explanation for the earth's magnetic field is _______________.
Answer: movement of electrons in the molten iron of its outer core
What kind of plate margin exists today in East Africa? Answer: Divergent Margins
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
PERFECTION| EVERY QUESTION SOLVED | EVERY SCORE
SECURED!
Course Code:
Course Title:
Programme:
Academic Year: 2026/2027.
Duration: 2 Hours.
Total Marks: 70%.
Candidate Instructions:
1) Write your Registration Number on every answer booklet used.
2) Answer ALL questions in Section A and ANY TWO (2) questions in Section B.
3) Read each question carefully before answering.
4) Begin each question on a new page.
5) The marks for each question are indicated in brackets.
6) This paper consists of several printed pages, including this page.
7) Ensure your copy is complete before the examination begins.
8) Unauthorized materials and communication with other candidates are not permitted.
Turn Over.
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, Match the magma/lava type with the appropriate geographic/tectonic setting where it likely
formed.
3. Columbia Plateau
4. Asthenosphere
5. Mount Fuji, Japan Answer: 3) basalt
4) periodite
5) andesite
Match the magma type with the appropriate tectonic setting where it likely forms.
1. Iceland
2. Sierra Nevada Batholith
3. Philippine Islands
4. Ural mountains
(basalt, granite, andesite, periotite, andalucite)r Answer: Iceland = Basalt
Sierra Nevada Batholith = Granite
Philippine Islands = Andesite
Ural mountains= granite
The Columbia Plateau is composed of rock rich in: Answer: Basalt
The melting temperature of granitic magma (wet melt) ______________: Answer: increases as
pressure is reduced (as it rises). Therefore it solidifies as it rises and rarely gets to surface. Dry
basaltic magma has opposite effect.
A partial melt of the asthenosphere will not rise toward the surface because _____________.
Answer: the above question is incorrect because an asthenospheric melt will rise towards the
surface
Aa basalts _______. Answer: are blocky textured flows that form as the viscosity increases
during degassing
When two ocean plates converge ___________. Answer: the older plate will be subducted
(because it is more dense)
The most widely accepted explanation for the earth's magnetic field is _______________.
Answer: movement of electrons in the molten iron of its outer core
What kind of plate margin exists today in East Africa? Answer: Divergent Margins
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
