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Interlude A: Introducing Rocks




MULTIPLE CHOICE



1. Which of the following would NOT be considered a rock?

a. a natural material composed of interlocking crystals

b. a natural pile of unconsolidated sand

c. a natural material made of frothy glass

d. a natural material made of shells cemented together


ANS: B DIF: Easy REF: A.2 TOP: 1

MSC: Understanding



2. Which one of the pictures does NOT show (a) rock(s)?




Figure A Figure B

, Figure C Figure D



a. Figure A c. Figure C

b. Figure B d. Figure D


ANS: D DIF: Easy REF: A.2 TOP: 1

MSC: Applying



3. How would you tell if a rock is crystalline?

a. It contains crystals that have been cemented together.

b. It does not contain crystals at all.

c. It contains interlocking crystals.

d. It contains all one type of crystal.


ANS: C DIF: Easy REF: A.2 TOP: 2

MSC: Analyzing



4. What is the term used for the arrangement of the minerals in the picture?

, a. equant c. crystalline

b. porous d. cemented


ANS: C DIF: Medium REF: A.2 TOP: 2

MSC: Applying



5. What is the purpose of the cement surrounding the grains in the photo?




a. It creates a coherent, intact rock.

b. It allows water to move through the rock.

c. It holds the grains together during deposition.

d. It provides a way to transfer chemicals between minerals.


ANS: A DIF: Medium REF: A.2 TOP: 2

MSC: Analyzing



6. Imagine you are holding a rock composed of small sand grains cemented together. What
subclassification of sedimentary rock is this?

a. clastic c. igneous

, b. chemical d. crystalline


ANS: A DIF: Easy REF: A.3 TOP: 2

MSC: Applying



7. Igneous rocks form from ________.

a. heat and pressure applied to a rock

b. precipitation of minerals out of a solution

c. sediments cemented together

d. molten rock cooling and forming crystals


ANS: D DIF: Easy REF: A.3 TOP: 2

MSC: Remembering



8. Which type of rock is formed by precipitation of minerals from a solution?

a. metamorphic c. sedimentary

b. glassy d. igneous


ANS: C DIF: Easy REF: A.3 TOP: 2

MSC: Remembering



9. If a rock is subjected to high heat and pressure, a(n) ________ rock will form.

a. igneous c. metamorphic

b. molten d. sedimentary


ANS: C DIF: Easy REF: A.3 TOP: 2

MSC: Remembering