Question 1

What type of rock is formed during a volcanic eruption?

Accepted Answer

A) sedimentary 
B) equant 
C) metamorphic 
D) igneous 
A) sedimentary 
B) equant 
C) metamorphic 
D) igneous D

Question 2

Which of the following would NOT be considered a rock?

Accepted Answer

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 
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 B

Question 3

Why do geologists use thin sections of rocks?

Accepted Answer

A) to determine if the rock is molten 
B) to identify foreign substances 
C) to identify the minerals 
D) to determine the arrangement of atoms 
A) to determine if the rock is molten 
B) to identify foreign substances 
C) to identify the minerals 
D) to determine the arrangement of atoms C

Question 4

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

Accepted Answer

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. 
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.

Question 5

Composition describes the ________.

Accepted Answer

A) degree of compaction and cementation in a rock 
B) arrangement of minerals in a rock 
C) presence of layers of minerals in a rock 
D) chemical makeup of a rock 
A) degree of compaction and cementation in a rock 
B) arrangement of minerals in a rock 
C) presence of layers of minerals in a rock 
D) chemical makeup of a rock

Question 6

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

Accepted Answer

A) Figure A 
B) Figure B 
C) Figure C 
D) Figure D 
A) Figure A 
B) Figure B 
C) Figure C 
D) Figure D

Question 7

What type of rock would you expect to form from the material found along a beach?

Accepted Answer

A) crystalline 
B) sedimentary 
C) metamorphic 
D) igneous 
A) crystalline 
B) sedimentary 
C) metamorphic 
D) igneous

Question 8

What type of rock is shown in the picture?

Accepted Answer

A) clastic 
B) sedimentary 
C) igneous 
D) metamorphic 
A) clastic 
B) sedimentary 
C) igneous 
D) metamorphic

Question 9

The picture below shows a(n)________ of rock that geologists use to determine the minerals in the rock.

Accepted Answer

A) hand sample 
B) thin section 
C) outcrop 
D) X-ray 
A) hand sample 
B) thin section 
C) outcrop 
D) X-ray

Question 10

Which is a characteristic used to classify a rock?

Accepted Answer

A) mineral stability 
B) rock texture 
C) water content 
D) degree of weathering 
A) mineral stability 
B) rock texture 
C) water content 
D) degree of weathering

Question 11

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

Accepted Answer

A) clastic 
B) chemical 
C) igneous 
D) crystalline 
A) clastic 
B) chemical 
C) igneous 
D) crystalline

Question 12

Why do geologists classify rocks?

Accepted Answer

A) to determine the chemical makeup of the Earth 
B) because rocks are the key to determining how the Earth formed 
C) because it makes it easier to tell them apart 
D) so that they can tell how old the rock is 
A) to determine the chemical makeup of the Earth 
B) because rocks are the key to determining how the Earth formed 
C) because it makes it easier to tell them apart 
D) so that they can tell how old the rock is

Question 13

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

Accepted Answer

A) igneous 
B) molten 
C) metamorphic 
D) sedimentary 
A) igneous 
B) molten 
C) metamorphic 
D) sedimentary

Question 14

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

Accepted Answer

A) metamorphic 
B) glassy 
C) sedimentary 
D) igneous 
A) metamorphic 
B) glassy 
C) sedimentary 
D) igneous

Question 15

Geologists sometimes use analytical equipment to help identify rocks.One commonly used machine is the electron microprobe,which focuses a beam of electrons on a sample to determine ________.

Accepted Answer

A) the amount of radioactive minerals 
B) how atoms are arranged 
C) the atomic weight 
D) the chemical composition 
A) the amount of radioactive minerals 
B) how atoms are arranged 
C) the atomic weight 
D) the chemical composition

Question 16

What do geologists call the layering seen in this picture?

Accepted Answer

A) tilted bedding 
B) metamorphic foliation 
C) sedimentary layers 
D) cleavage planes 
A) tilted bedding 
B) metamorphic foliation 
C) sedimentary layers 
D) cleavage planes

Question 17

Igneous rocks form from ________.

Accepted Answer

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 
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

Question 18

What type of rock is being formed in the picture?

Accepted Answer

A) igneous 
B) sedimentary 
C) metamorphic 
D) inequant 
A) igneous 
B) sedimentary 
C) metamorphic 
D) inequant

Question 19

What type of texture is shown in the photomicrograph?

Accepted Answer

A) foliation 
B) crystalline 
C) sedimentary 
D) clastic 
A) foliation 
B) crystalline 
C) sedimentary 
D) clastic

Question 20

Where would you expect to find metamorphic rocks forming?

Accepted Answer

A) deep inside a mountain range 
B) inside a lava flow on Hawaii 
C) under the water at the mid-ocean ridge 
D) at the bottom of the Mediterranean Sea 
A) deep inside a mountain range 
B) inside a lava flow on Hawaii 
C) under the water at the mid-ocean ridge 
D) at the bottom of the Mediterranean Sea

Exam 24: Introducing Rocks

What type of rock is formed during a volcanic eruption?

Which of the following would NOT be considered a rock?

Why do geologists use thin sections of rocks?

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

Composition describes the ________.

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

What type of rock would you expect to form from the material found along a beach?

What type of rock is shown in the picture?

The picture below shows a(n)________ of rock that geologists use to determine the minerals in the rock.

Which is a characteristic used to classify a rock?

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

Why do geologists classify rocks?

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

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

Geologists sometimes use analytical equipment to help identify rocks.One commonly used machine is the electron microprobe,which focuses a beam of electrons on a sample to determine ________.

What do geologists call the layering seen in this picture?

Igneous rocks form from ________.

What type of rock is being formed in the picture?

What type of texture is shown in the photomicrograph?

Where would you expect to find metamorphic rocks forming?

Cosmology and the Birth of Earth

Journey to the Center of the Earth

Drifting Continents and Spreading Seas

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

The Wrath of Vulcan: Volcanic Eruptions

A Violent Pulse: Earthquakes

Crags,cracks,and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Squeezing Power From a Stone: Energy Resources

Riches in Rock: Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Streams and Floods: the Geology of Running Water

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

An Envelope of Gas: Earths Atmosphere and Climate

Dry Regions: the Geology of Deserts

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

a Surface Veneer: Sediments and Soils

the Rock Cycle in the Earth System

the Earths Interior, revisited: Seismic Layering, gravity, and the Magnetic Field

Memories of Past Life: Fossils and Evolution

Ever-Changing Landscapes and the Hydrologic Cycle

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