Chapter 1 Introduction to Planet Earth

A  billion

B  trillion

C  thousand

D  million

A  oceanic crust

B  basalt

C  continental crust

D  asthenosphere

E  granite

A  mesosphere

B  core

C  atmosphere

D  lithosphere

E  asthenosphere

A  Continental crust is thinner and less dense than oceanic crust.

B  Continental crust is thinner and denser than oceanic crust.

C  Continental crust and oceanic crust have equivalent densities.

D  Continental crust is thicker and less dense than oceanic crust.

E  Continental crust is thicker and denser than oceanic crust.

A  basalt.

B  granite.

C  clay minerals.

D  siltstone.

E  carbonate sedimentary rocks.

A  gravitational force created by the rotating Earth.

B  decrease in temperature downward toward the core.

C  differing densities of the elements that make up the Earth.

D  presence of water at Earth’s surface.

E  initial collection of materials and their position in Earth.

A  nebula.

B  protoplanet.

C  quasar.

D  solar system.

E  supernova.

A  100.0

B  500

C  4,000

D  1,000

E  3,000

A  physical composition

B  ecological composition

C  chemical composition

D  biological composition

A  Lithosphere

B  Mesosphere

C  Inner core

D  Asthenosphere

E  Outer core

A  Inner core

B  Asthenosphere

C  Outer core

D  Crust

E  Lithosphere

A  2.5

B  1.5

C  2.0

D  3.0

E  3.5

A  Diorite

B  Granite

C  Basalt

D  Andesite

E  Quartzite

A  Andesite

B  Diorite

C  Quartzite

D  Granite

E  Basalt

A  the Moon is derived from a protoplanet

B  galaxies such as the Milky Way form independent of one another

C  all bodies in the solar system formed from an enormous gas cloud

D  the Earth was formed by a cosmic explosion, a “big bang”

E  Earth’s moon is an asteroid captured by the Earth’s gravity

A  lower mantle

B  upper mantle and hydrosphere

C  crust and ocean

D  outer core

E  crust and uppermost mantle

A  The initial atmospheres of Earth and other planets close to the Sun were rich in ammonia and carbon dioxide.

B  The Sun and the rest of the solar system were formed approximately one billion years ago.

C  The Sun became a star when its temperature and density became so great that nuclear fusion began.

D  The solar system was formed by the expansion of a relatively small cloud of gas and space dust.

E  The moon is believed to have been a protoplanet that passed close to Earth and was captured by its gravitational field.

A  The athenosphere is a plastic or malleable region of Earth’s interior, whereas the lithosphere is a liquified rock layer. Both are capable of flow.

B  The athenosphere is a brittle, solid region. The lithosphere is a plastic or malleable rock layer that is capable of flow.

C  The athenosphere is a brittle, low-density region composed of continental and oceanic crust. The lithosphere is a plastic or malleable, high-density region composed of oceanic crust.

D  The athenosphere is plastic or malleable and capable of slow flow. The lithosphere is a brittle and rigid solid region comprised mosly of basalt and granite.

A  The highest-density materials are concentrated at Earth’s core, whereas lower-density materials are located closer to Earth’s surface.

B  The highest-density materials make up the ocean floor, and the lowest-density materials make up the mountains.

C  The lowest-density materials make up the ocean floor, and the highest-density materials make up the mountains.

D  The lowest-density materials are concentrated at Earth’s core, whereas higher-density materials are located closer to Earth’s surface.

E  The materials are homogenous throughout Earth’s interior.

A  The magnesium-silicate rocks of Earth’s mantle exist in both solid and molten form. The composition of the lithosphere is uniform throughout.

B  The asthenosphere is composed of basalt and granite. The composition of the lithosphere is uniform throughout.

C  The magnesium-silicate rocks of Earth’s mantle exist in both solid and molten form. The mesosphere and the asthenosphere have the same chemical composition.

D  The composition of the lithosphere is uniform throughout. The liquid outer core is composed of different metals than the solid inner core.

A  Molten material will rise if it is less dense than the surrounding material. The layer with the greatest density is located at the center of Earth. Rocky material of the mantle is less dense than the liquid outer core.

B  Solid materials will always sink beneath fluid materials. Molten material will rise if it is less dense than the surrounding material. The thickest layer of Earth has the greatest density.

C  Solid materials will always sink beneath fluid materials. The thickest layer of Earth has the greatest density.

D  Solid materials will always sink beneath fluid materials. The thickest layer of Earth has the greatest density. Rocky material of the mantle is less dense than the liquid outer core.

A  Continental crust and oceanic crust are both predominantly composed of igneous rocks. Continental crust is made of rock that is light in color. Continental crust is less dense than oceanic crust.

B  Continental crust is made mostly of basalt. Continental crust is much thinner than oceanic crust. Continental crust is made of rock that is light in color.

C  Continental crust is made mostly of basalt. Continental crust is much thinner than oceanic crust.

D  Continental crust is made mostly of basalt. Continental crust is much thinner than oceanic crust. Continental crust is less dense than oceanic crust.

A  Lithosphere that was weighed down by glacial ice. Lithosphere that gets a large amount of additional mass added on top of it

B  Lithosphere that was made to be less dense. Lithosphere that was heated by hot asthenosphere. Lithosphere that was thickened by mountain building

C  Lithosphere that was weighed down by glacial ice. Lithosphere that was thickened by mountain building

D  Lithosphere that was heated by hot asthenosphere.. Lithosphere that gets a large amount of additional mass added on top of it

A  4.6 million years

B  4600 billion years

C  460 million years

D  4.6 billion years

E  46 million years

A  Vesta and Ceres

B  Jupiter and Mercury

C  Neptune and Mercury

D  Mercury and Ceres

A  There was no life on proto-Earth. Layers within proto-Earth were more pronounced.

B  Proto-Earth was homogenous. There was no life on proto-Earth. Proto-Earth was larger than Earth is today.

C  The ocean was larger and hotter than it is today. Layers within proto-Earth were more pronounced.

D  The ocean was larger and hotter than it is today. Proto-Earth was larger than Earth is today.

A  planetary subduction

B  planetary accretion

C  nuclear fission

D  planetary erosion

E  thermonuclear fusion

A  Over time, a nebula becomes cooler and grows in size.

B  The density of a nebula is greatest at the edges and least in the center.

C  There are no nebulas left in our galaxy because they have all formed stars and planets.

D  It is believed that each planet in our solar system began as its own nebula.

E  Over time, a star will form at the center of a nebula.

A  iron and magnesium

B  iron and quartz

C  silica and quartz

D  aluminum and silica

A  iron and magnesium

B  quartz and iron

C  silica and quartz

D  quartz and aluminum

A  asthenosphere, outer core, mesosphere

B  mesosphere, ithosphere, inner core

C  mesosphere, ithosphere, asthenosphere

D  lithosphere, asthenosphere, outer core,

A  Earth’s core is composed of two layers that differ in chemical composition and physical properties. The inner core is liquid because it is so hot.

B  Earth’s core is composed of two layers that differ in physical properties. The outer core is liquid because it is so hot. The core is composed of mainly iron and nickel, with some sulfur.

C  The inner core is liquid because it is so hot. The outer core is liquid because it is so hot.

D  The inner core is liquid because it is so hot. Earth’s core is composed of two layers that differ in chemical composition with some sulfur.

A  material density, with the most-dense material on the surface and the least-dense material in the center

B  material weight

C  material temperature, with the coolest material on the surface and the hottest material in the center

D  material temperature, with the hottest material on the surface and the coolest material in the center

E  material density, with the least-dense material on the surface and the most-dense material in the center

A  viscosity sphere

B  hot sphere

C  weak sphere

D  flexible sphere

E  deep sphere

A  thermal energy that was converted from the magnetic energy of the original nebula collapse

B  thermal energy that was converted from the gravitational energy of the original nebula collapse

C  ultraviolet energy that was converted from the magnetic energy of the original nebula collapse

D  ultraviolet energy that was converted from the gravitational energy of the original nebula collapse

A  a large cloud of dust and gas in space

B  a large cloud of dust and liquid in space

C  a large disk of dust and gas in space

D  a large disk of dust and liquid in space

A  A large cloud of dust and gas began to contract under the force of gravity.

B  A large cloud of dust and gas began to expand under the force of gravity.

C  A large cloud of dust and gas began to contract under the force of magnetism.

D  A large cloud of dust and gas began to expand under the force of magnetism.

A  5000 years ago

B  5 million years ago

C  5 trillion years ago

D  5 billion years ago

A  33 atoms

B  25 atoms

C  50 atoms

D  100 atoms

A  50 atoms

B  33 atoms

C  25 atoms

D  100 atoms

A  The rate of decay of atoms (half-life) in container A is greater (or longer) than the rate of decay of atoms (half-life) in container B.

B  The rate of decay of atoms (half-life) in container B is the same as the rate of decay of atoms (half-life) in container A. 

C  The rate of decay of atoms (half-life) in container B is greater (or longer) than the rate of decay of atoms (half-life) in container A.

A  the number of parent isotopes that will be lost during a single radioactive decay event

B  the amount of time over which the number of parent isotopes decreases by half

C  the number of daughter isotopes that will be gained during a single radioactive decay event

D  the amount of time over which the number of daughter isotopes increases by half

A  Daughter isotopes turn into parent isotopes

B  Energy turns into daughter isotopes.

C  Parent isotopes turn into daughter isotopes.

D  Parent isotopes turn into energy.

E  Daughter isotopes turn into energy.

A  distant

B  close-range

A  decreased

B  increased

A  decreased

B  increased

A  decreased…distant

B  increased… close-range

A  distant

B  close-range

A  Collecting many vocal samples from multiple groups of whales.

B  Collecting many vocal samples from one group of whales in a variety of ocean conditions.

C  Collecting a single vocal sample from one group of whales in a variety of ocean conditions.

D  Collecting many vocal samples from multiple groups of whales in a variety of ocean conditions.

A  Close to a marina because the scientists could take boats up close to the whales to quietly and carefully observe them breaching.

B  Elevated high on a cliff so observers could easily view the whales from shore and record their behavior.

C  A location right on the beach close to the migration route so that they could easily observe the whales and record their behavior.

D  On boats so the whales would swim close enough for researchers to easily listen to their vocalizations.

A  theory

B  prediction

C  hypothesis

D  testing

E  observation

A  an educated guess

B  an idea that is supported by a majority of the population

C  an explanation that is supported by political leaders and popular media

D  a well-substantiated explanation that is supported by facts, laws, tested hypotheses and logical inferences

E  a hypothesis that has been tested once

A  hypothesis

B  prediction

C  testing

D  theory

E  observation

A  Theory

B  Observation

C  Belief

D  Testing

E  Hypothesis

A  observations.

B  guesses.

C  theories.

D  laws.

E  hypotheses.

A  Hypothesis

B  Observations

C  Guesses

D  Theories

E  Laws

A  hypothesis

B  observation

C  theory

D  guess

E  law

A  To allow scientists to test their hypotheses with experiments

B  To explain why the world and the laws of nature exist

C  To develop theories that help scientists determine the truth

D  To determine what happened in the past

E  To explain the causes and effects of observable natural phenomena

A  Waves approach the beach at an angle.

B  Waves are the result of a disturbance (release of energy) somewhere in the ocean.

C  Waves transfer wind energy from the surface to deeper water.

D  Waves are usually caused by a distant storm.

E  Waves lose little energy as they travel across the ocean.

A  Observation(s)

B  Absolute truth

C  Hypotheses

D  Theory

E  Testing

A  Observation, hypothesis, testing, and truth

B  Observation, hypothesis, testing, and theory

C  Theory, hypothesis, falsification, and law

D  Guess, testing, hypothesis, and theory

E  Symposia, testing, hypothesis, and theory

A  geological

B  biological

C  physical

D  archaeological

E  chemical

A  archaeological

B  physical

C  biological

D  chemical

E  geological

A  Dissolved components

B  Microbiology

C  Chemical tracers

D  Temperature dependence

E  Stratification/density

A  Historical oceanography

B  Biological oceanography

C  Chemical oceanography

D  Physical oceanography

E  Geological oceanography

A  1900s

B  1850s

C  1870s

D  1890s

E  2000s

A  National Oceanic and Atmospheric Association

B  National Oceanic and Atlas Administration

C  National Oceanic and Atmospheric Administration

D  National Oceanic and Atlas Association

A  Chemical and geological oceanography

B  Chemical and physical oceanography

C  Geological and physical oceanography

D  Biological and physical oceanography

E  Biological and chemical oceanography

A  Gunfire

B  Scurvy

C  Shipwreck

D  Contagious disease

A  Juan Sebastian del Caño

B  Giovanni Caboto

C  Ferdinand Magellan

D  Vasco da Gama

E  Vasco Nunez de Balboa

A  James Cook

B  Vasco da Gama

C  Giovanni Caboto

D  Prince Henry the Navigator

E  Ferdinand Magellan

A  Vasco da Gama

B  James Cook

C  Prince Henry the Navigator

D  Giovanni Caboto

E  Ferdinand Magellan

A  James Cook

B  Ferdinand Magellan

C  Vasco da Gama

D  Juan Sebastian del Caño

E  Vasco Nunez de Balboa

A  Juan Sebastian del Caño

B  Vasco da Gama

C  Vasco Nunez de Balboa

D  Ferdinand Magellan

E  Giovanni Caboto

A  Thor Heyerdahl

B  Prince Henry the Navigator

C  Leif Eriksson

D  Bjarni Herjolfsson

E  Erik Thorvaldson

A  Leif Eriksson

B  Thor Heyerdahl

C  Erik Thorvaldson

D  Bjarni Herjolfsson

A  Claudius Ptolemy

B  Pytheas

C  Erik Thorvaldson

D  Eratosthenes

E  Christopher Columbus

A  Polynesians

B  Greeks

C  Phoenicians

D  Chinese

A  Marquesas

B  Easter Island

C  Hawaiian Islands

D  New Zealand

E  Fiji, Tonga, and Samoa

A  Hawaiian Islands

B  Marquesas

C  New Zealand

D  Easter Island

E  Fiji, Tonga, and Samoa

A  40,000

B  400,000

C  4,000,000

D  5,000

A  John Cabot

B  Ptolemy

C  Ferdinand Magellan

D  Vasco de Gama

E  Christopher Columbus

A  Ptolemy

B  Magellan

C  Herodotus

D  Pytheas

E  Eratosthenes

A  Polynesian colonization of Pacific Islands.

B  Phoenician exploration of the Mediterranean.

C  Viking voyages to North America.

D  Ferdinand Magellan’s circumnavigation of the globe.

E  Christopher Columbus’s discovery of the “New World.”

A  Phoenician exploration of the Mediterranean.

B  Ferdinand Magellan’s circumnavigation of the globe.

C  Viking voyages to North America.

D  Christopher Columbus’s discovery of the “New World.”

E  Polynesian colonization of Pacific Islands.

A  Spain.

B  Vikings of Scandinavia.

C  Italy.

D  Portugal.

E  France.

A  Herodotus.

B  Eratosthenes.

C  Seneca.

D  Ptolemy.

E  Pytheas.

A  Herodotus.

B  Ptolemy.

C  Pytheas.

D  Eratosthenes.

E  Seneca.

A  Polynesians.

B  Vikings.

C  Greeks.

D  Phoenicians.

E  New Zealanders.

A  Greece

B  Libya

C  Syria

D  Egypt

E  Turkey

A  Claudius Ptolemy

B  Pytheas

C  Phoenicians

D  Erathosthenes

A  Christopher Columbus

B  John Cabot

C  Leif Eriksson

D  Ferdinand Magellan

E  Vasco da Gama

A  1776-1780

B  1780-1783

C  1750-1754

D  1768-1771

E  1772-1775

A  Vitamin D deficiency

B  Vitamin B deficiency

C  Vitamin A deficiency

D  Vitamin C deficiency

E  Vitamin E deficiency

A  Discovery

B  Adventure

C  Endeavour

D  Resolution

A  Christopher Columbus

B  James Cameron

C  James Cook

D  Leif Erikson

E  Juan Sebastian del Cano

A  a reasonably accurate calculation of the circumference of our planet

B  the introduction of latitude and longitude lines on maps of the world

C  devising a means of fixing longitude while at sea

D  exploration outside the Mediterranean Sea and into the North Atlantic Ocean

E  discovery of a trade route from Europe around the African continent to India

A  Christopher Columbus

B  Captain James Cook

A  Captain James Cook

B  Christopher Columbus

A  Greeks

B  Arabs

C  Phoenicians

D  Vikings

A  Pacific Islanders

B  Phoenicians

C  Vikings

D  Arabs

A  Vikings

B  Pacific Islanders

C  Greeks

D  Phoenicians

A  Vikings

B  Phoenicians

C  Arabs

D  Greeks

A  Greeks

B  Phoenicians

C  Pacific Islanders

D  Arabs

A  The tallest point on land, Mt. Everest, is much taller than the ocean is deep.  

B  On Earth, the average depth of the oceans is less than the average height of the land.

C  The Pacific Ocean covers more of Earth’s surface than all the land combined.

D  About half the surface area on Earth is covered with oceans and half is covered with land.

A  All four principle oceans have similar average depths.

B  The average depths of the Pacific, Atlantic, and Indian Oceans are very similar, while the depth of the Arctic Ocean is much shallower than the other three.

C  The average depth of the Atlantic, Indian, and Arctic Oceans is similar, while the average depth of the Pacific Ocean is much greater.

D  The average depths of the Pacific and Atlantic Oceans are very similar and are much deeper than the Indian and Arctic Oceans.

A  Arctic, Indian, Atlantic, Pacific

B  Indian, Arctic, Atlantic, Pacific

C  Arctic, Indian, Pacific, Atlantic

D  Arctic, Atlantic, Indian, Pacific

E  Arctic, Pacific, Atlantic, Indian

A  The Arctic Ocean

B  The Atlantic Ocean

C  The Indian Ocean

D  The Pacific Ocean

A  The Mediterranean Sea

B  The Indian Ocean

C  The Black Sea

D  The Red Sea

E  The Caspian Sea

A  The Southern Ocean

B  The Atlantic Ocean

C  The Arctic Ocean

D  The Pacific Ocean

E  The Indian Ocean

A  The Pacific Ocean

B  The Atlantic Ocean

C  The Indian Ocean

D  The Antarctic Ocean

E  The Arctic Ocean

A  The Pacific Ocean

B  The Atlantic Ocean

C  The Antarctic Ocean

D  The Arctic Ocean

E  The Indian Ocean

A  The Pacific Ocean

B  The Antarctic Ocean

C  The Atlantic Ocean

D  The Indian Ocean

E  The Arctic Ocean

A  The Arctic Ocean

B  The Pacific Ocean

C  The Southern Ocean

D  The Atlantic Ocean

A  The Arctic Ocean

B  The Indian Ocean

C  The Antarctic Ocean

D  The Pacific Ocean

E  The Atlantic Ocean

A  The Indian Ocean

B  The Southern Ocean

C  The Pacific Ocean

D  The Antarctic Ocean

E  The Atlantic Ocean

A  The Southern Ocean

B  The Atlantic Ocean

C  The Pacific Ocean

D  The Indian Ocean

E  The Antarctic Ocean

A  The Pacific Ocean

B  The Southern Ocean

C  The Indian Ocean

D  The Antarctic Ocean

E  The Atlantic Ocean

A  The Pacific Ocean covers more than two-thirds of the ocean surface area on Earth.

B  The Pacific Ocean is about three times larger than the next largest ocean.

C  The Pacific Ocean spans more than one-half of Earth’s entire surface.

D  All of the continents could fit into the space occupied by the Pacific Ocean.

E  The Pacific Ocean is the second largest geographic feature on the planet.

A  shape; position

B  size; shape

C  position; latitude

D  depth; elevation

A  Adriatic

B  Caspian

C  Indian

D  Mediterranean

E  Black

A  Mediterranean

B  Indian

C  Pacific

D  Atlantic

E  Arctic

A  The depth of this trench is estimated at 15,000 meters.

B  The deepest part of the ocean is located in a trench off the coast of Japan.

C  This trench is called the Philippine Trench.

D  The depth of this trench exceeds the height of Mount Everest.

E  The bottom of this trench has never been reached by a submersible.

A  840 meters (2,756 feet)

B  3,682 meters (12,080 feet)

C  2,172 meters (7,126 feet)

D  11,022 meters (36,161 feet)

E  5,280 meters (17,323 feet)

A  Indian Ocean.

B  Pacific Ocean.

C  Arctic Ocean.

D  Atlantic Ocean.

E  Southern Ocean.

A  Antarctic, Arctic, Indian, Pacific, and Southern Oceans.

B  Antarctic, Caspian, Southern, Indian, and Pacific Oceans.

C  Atlantic, Arctic, Mediterranean, Southern, and Pacific Oceans.

D  Atlantic, Pacific, Indian, Southern, and Arctic Oceans.

E  Atlantic, Antarctic, Southern, Mediterranean, and Pacific Oceans.

A  1940 and 2000

B  1960 and 2012

C  1930 and 1998

D  1970 and 2014

E  1950 and 2010

A  150

B  200

C  50

D  100

E  250

A  Atlantic Ocean

B  Pacific Ocean

C  Arctic Ocean

D  Indian Ocean

E  Southern Ocean

A  80

B  70

C  60

D  90

E  50

A  The Black Sea

B  The Adriatic Sea

C  The Yellow Sea

D  The Mediterranean Sea

E  The Red Sea

A  Arctic

B  Indian

C  Southern

D  Atlantic

E  Pacific

A  the Pacific Ocean

B  Africa

C  the Atlantic Ocean

D  the Antarctic ice cap

E  Eurasia

A  The Mariana Trench is thousands of meters deeper than Mount Everest is tall.

B  The Mariana Trench and Mount Everest are similar in depth and height.

C  The Mariana Trench is shallower than the average height of mountains on land.

D  The Mariana Trench is thousands of meters shallower than Mount Everest is tall.

E  Mount Everest and the average depth of the oceans are similar in height above sea level and ocean depth, respectively.

A  Seas are bodies of water that are composed of salt water, but they are enclosed by land and therefore not directly connected to the world ocean.

B  Seas are smaller, shallower, composed of freshwater, and are somewhat enclosed by land.

C  There is no difference between oceans and seas.

D  Seas are smaller and shallower bodies of salt water that are somewhat enclosed by land, but they are directly connected to the world ocean.

E  Seas are larger and deeper bodies of water that are composed of both fresh and salt water, and they are directly connected to the world ocean.

A  Mediterranean cultures believed Earth was composed of large land masses surrounded by large bodies of water.

B  Mediterranean cultures believed Earth was composed of large land masses surrounded by marginal bodies of water.

C  Mediterranean cultures believed Earth was composed of small land masses surrounded by marginal bodies of water.

D  Mediterranean cultures believed Earth was composed of small land masses surrounded by large bodies of water.

A  The Southern Ocean is at the southernmost point of the globe.
The majority of the Indian Ocean is in the Northern Hemisphere.

B  The Atlantic Ocean is the second largest of the oceans.
The deepest areas of the world’s oceans are found in the Pacific Ocean.
The Arctic Ocean is the shallowest ocean.

C  The Southern Ocean is at the southernmost point of the globe.
The Arctic Ocean is the shallowest ocean.
The majority of the Indian Ocean is in the Northern Hemisphere.

D  The Atlantic Ocean is the second largest of the oceans.
The Southern Ocean is at the southernmost point of the globe.
The majority of the Indian Ocean is in the Northern Hemisphere.

A  NASA satellites fly over Antarctica.
Earth’s ocean is one big interconnected body of water.
The Southern Ocean is one of the least-studied areas on planet Earth.

B  The Southern Ocean is one of the least-studied areas on planet Earth.
The Arctic is a continent surrounded by land, whereas the Antarctic is an ocean surrounded by continents.
The Indian Ocean is about 7% the size of the Pacific Ocean.

C  The Arctic is a continent surrounded by land, whereas the Antarctic is an ocean surrounded by continents.
The Indian Ocean is about 7% the size of the Pacific Ocean.

D  The Arctic is a continent surrounded by land, whereas the Antarctic is an ocean surrounded by continents.
The Indian Ocean is about 7% the size of the Pacific Ocean.
NASA satellites fly over Antarctica.

A  Pacific, Indian, Atlantic

B  Arctic, Caspian Sea, Atlantic

C  Arctic, Caspian Sea

D  Arctic, Caspian Sea, Pacific

A  Pacific

B  Indian Ocean

C  Atlantic Ocean

D  Arctic

E  Southern Ocean

A  Pacific Ocean

B  Mediterranean Sea

C  Atlantic Ocean

D  Arctic Ocean

E  Lake Baikal

A  Amazon Rainforest

B  Antarctica

C  Great Barrier Reef

D  Grand Canyon

E  Pacific Ocean