Page 1 of 166
EARTH SCIENCE FINAL EXAM / CURRENT
FINAL EXAM EARTH SCIENCE 2026
COMPLETE ACCURATE EXAM ACTUAL
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED SOLUTIONS) LATEST
UPDATED VERSION 2026 EDITION
|GUARANTEED PASS A+ (BRAND NEW!)
FULL REVISED
1. (MC) Which mineral property describes the way light
reflects off a surface?
,Page 2 of 166
A) Hardness
B) Streak
C) Luster
D) Cleavage
Answer: C
Rationale: Luster is the appearance of a mineral's surface in
reflected light (metallic, glassy, dull). Hardness is resistance to
scratching, streak is powder color, cleavage is breakage
pattern.
2. (MA) Which of the following are silicate minerals? (Select
all that apply)
A) Quartz
B) Calcite
C) Feldspar
D) Halite
Answer: A, C
Rationale: Quartz and feldspar are silicates (SiO₄ tetrahedra).
Calcite is a carbonate, halite is a halide.
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3. (SB) Scenario: A mineral scratches glass but cannot scratch a
steel file. What is its approximate Mohs hardness?
A) 2–3
B) 4–5
C) 6–7
D) 8–9
Answer: C
Rationale: Glass hardness ~5.5, steel file ~6.5. Mineral harder
than glass (5.5) but softer than steel file (6.5) → Mohs 6–7
(e.g., orthoclase, quartz).
4. (MC) Which mineral fizzes with dilute hydrochloric acid?
A) Quartz
B) Halite
C) Calcite
D) Gypsum
Answer: C
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Rationale: Calcite (CaCO₃) reacts with acid to release CO₂
gas. Quartz, halite, and gypsum do not fizz.
5. (MA) Which of the following are igneous rocks? (Select all
that apply)
A) Granite
B) Marble
C) Basalt
D) Slate
Answer: A, C
Rationale: Granite and basalt are igneous (cooled
magma/lava). Marble is metamorphic, slate is metamorphic.
6. (SB) Scenario: A student finds a rock with large, interlocking
crystals of quartz, feldspar, and mica. Where did this rock
likely form?
A) On the surface from lava
B) Deep underground from slow cooling
C) At a river delta
EARTH SCIENCE FINAL EXAM / CURRENT
FINAL EXAM EARTH SCIENCE 2026
COMPLETE ACCURATE EXAM ACTUAL
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED SOLUTIONS) LATEST
UPDATED VERSION 2026 EDITION
|GUARANTEED PASS A+ (BRAND NEW!)
FULL REVISED
1. (MC) Which mineral property describes the way light
reflects off a surface?
,Page 2 of 166
A) Hardness
B) Streak
C) Luster
D) Cleavage
Answer: C
Rationale: Luster is the appearance of a mineral's surface in
reflected light (metallic, glassy, dull). Hardness is resistance to
scratching, streak is powder color, cleavage is breakage
pattern.
2. (MA) Which of the following are silicate minerals? (Select
all that apply)
A) Quartz
B) Calcite
C) Feldspar
D) Halite
Answer: A, C
Rationale: Quartz and feldspar are silicates (SiO₄ tetrahedra).
Calcite is a carbonate, halite is a halide.
,Page 3 of 166
3. (SB) Scenario: A mineral scratches glass but cannot scratch a
steel file. What is its approximate Mohs hardness?
A) 2–3
B) 4–5
C) 6–7
D) 8–9
Answer: C
Rationale: Glass hardness ~5.5, steel file ~6.5. Mineral harder
than glass (5.5) but softer than steel file (6.5) → Mohs 6–7
(e.g., orthoclase, quartz).
4. (MC) Which mineral fizzes with dilute hydrochloric acid?
A) Quartz
B) Halite
C) Calcite
D) Gypsum
Answer: C
, Page 4 of 166
Rationale: Calcite (CaCO₃) reacts with acid to release CO₂
gas. Quartz, halite, and gypsum do not fizz.
5. (MA) Which of the following are igneous rocks? (Select all
that apply)
A) Granite
B) Marble
C) Basalt
D) Slate
Answer: A, C
Rationale: Granite and basalt are igneous (cooled
magma/lava). Marble is metamorphic, slate is metamorphic.
6. (SB) Scenario: A student finds a rock with large, interlocking
crystals of quartz, feldspar, and mica. Where did this rock
likely form?
A) On the surface from lava
B) Deep underground from slow cooling
C) At a river delta
