Question 1

Ozone is very efficient at

Accepted Answer

A)  reflecting radio waves from space. 
B)  deflecting the fast-moving protons from the solar wind. 
C)  dissolving near-Earth objects. 
D)  absorbing potentially harmful ultraviolet radiation from the Sun. 
A)  reflecting radio waves from space. 
B)  deflecting the fast-moving protons from the solar wind. 
C)  dissolving near-Earth objects. 
D)  absorbing potentially harmful ultraviolet radiation from the Sun. D

Question 2

Billions of years ago,Earth's atmosphere was composed primarily of carbon dioxide.What happened to much of this carbon dioxide?

Accepted Answer

A)  It is still in the atmosphere. 
B)  It was broken into carbon and oxygen by solar ultraviolet light. 
C)  It dissolved into Earth's oceans. 
D)  It was lost to space. 
A)  It is still in the atmosphere. 
B)  It was broken into carbon and oxygen by solar ultraviolet light. 
C)  It dissolved into Earth's oceans. 
D)  It was lost to space. C

Question 3

In 1985,scientists discovered a region with an abnormally low concentration of ozone over

Accepted Answer

A)  China. 
B)  Antarctica. 
C)  the United States. 
D)  England. 
A)  China. 
B)  Antarctica. 
C)  the United States. 
D)  England. B

Question 4

Because of seafloor spreading,South America and Africa are moving apart at a rate of roughly

Accepted Answer

A)  3 micrometers per year. 
B)  3 cm per year. 
C)  3 kilometers per year. 
D)  300 kilometers per year. 
A)  3 micrometers per year. 
B)  3 cm per year. 
C)  3 kilometers per year. 
D)  300 kilometers per year.

Question 5

The average density of Earth's core is

Accepted Answer

A)  3.5 times that of water. 
B)  more than 10 times that of water. 
C)  the same as that of water. 
D)  5.5 times that of water. 
A)  3.5 times that of water. 
B)  more than 10 times that of water. 
C)  the same as that of water. 
D)  5.5 times that of water.

Question 6

Earth's magnetic field is caused by

Accepted Answer

A)  electric currents flowing in the molten core. 
B)  the motions of the electrically charged particles of the solar wind as they pass Earth. 
C)  a solid iron magnet in its interior. 
D)  electric currents flowing in the ionospheric layer of its atmosphere. 
A)  electric currents flowing in the molten core. 
B)  the motions of the electrically charged particles of the solar wind as they pass Earth. 
C)  a solid iron magnet in its interior. 
D)  electric currents flowing in the ionospheric layer of its atmosphere.

Question 7

What are the three main classifications of rocks on Earth and how are they formed?

Accepted Answer

The three main classifications are igneo

Question 8

What is the greenhouse effect and what does it mean for life on Earth?

Accepted Answer

Our atmosphere prevents some of the radi

Question 9

What evidence suggests that all of the continents were merged into a single supercontinent?

Accepted Answer

The shape of the continents fits togethe

Question 10

The average density of Earth's surface is

Accepted Answer

A)  3.5 times that of water. 
B)  more than 10 times that of water. 
C)  the same as that of water. 
D)  5.5 times that of water. 
A)  3.5 times that of water. 
B)  more than 10 times that of water. 
C)  the same as that of water. 
D)  5.5 times that of water.

Question 11

Where is the mantle of Earth located?

Accepted Answer

A)  Between the stratosphere and the thermosphere 
B)  Outside of,but in contact with,the crust (i.e. ,the oceans and atmosphere) 
C)  In the outermost atmosphere and beyond,where the planet's magnetic field captures solar wind particles 
D)  Between the core and the crust 
A)  Between the stratosphere and the thermosphere 
B)  Outside of,but in contact with,the crust (i.e. ,the oceans and atmosphere) 
C)  In the outermost atmosphere and beyond,where the planet's magnetic field captures solar wind particles 
D)  Between the core and the crust

Question 12

The albedo of a planet is the fraction of energy that is

Accepted Answer

A)  reradiated into space as infrared radiation by the planet. 
B)  reflected by the whole planet,including atmosphere and surface. 
C)  absorbed. 
D)  reflected by clouds in the atmosphere. 
A)  reradiated into space as infrared radiation by the planet. 
B)  reflected by the whole planet,including atmosphere and surface. 
C)  absorbed. 
D)  reflected by clouds in the atmosphere.

Question 13

A "Slinky" toy is made up of a long flexible spring.The analogous wave to the primary (P)wave produced in an earthquake would be generated by moving the end of the spring

Accepted Answer

A)  round and round,in a circular motion perpendicular to the axis of the spring. 
B)  in a twisting motion back and forth,thereby tightening and loosening the spiral of the spring. 
C)  side to side,in a direction perpendicular to the spring. 
D)  back and forth in a direction along the spring. 
A)  round and round,in a circular motion perpendicular to the axis of the spring. 
B)  in a twisting motion back and forth,thereby tightening and loosening the spiral of the spring. 
C)  side to side,in a direction perpendicular to the spring. 
D)  back and forth in a direction along the spring.

Question 14

In recent years,geologists have uncovered evidence that suggests that a succession of supercontinents has broken apart and reassembled.

Accepted Answer

A) True 
 B)False

Question 15

Is there scientific debate over whether or not global warming is occurring?

Accepted Answer

No.There is no debate-nearly everyone ag

Question 16

All the boundaries of the major moving tectonic plates on Earth's surface coincide with

Accepted Answer

A)  the edges of the continental shelves around the major continents. 
B)  regions where ocean depths are greatest. 
C)  the occurrence of major auroral activity. 
D)  the positions of maximum earthquake occurrence. 
A)  the edges of the continental shelves around the major continents. 
B)  regions where ocean depths are greatest. 
C)  the occurrence of major auroral activity. 
D)  the positions of maximum earthquake occurrence.

Question 17

Why is the ozone layer important to humans and what effects have humans had on it?

Accepted Answer

The ozone layer absorbs ultraviolet ligh

Question 18

You are a geologist detecting S (secondary)seismic waves from a source somewhere else on Earth.You know that these S waves

Accepted Answer

A)  have traveled in a straight line through Earth from the source to your detector. 
B)  have not passed through the center of Earth. 
C)  have traveled along the surface of Earth from the source to your detector. 
D)  must have originated only a few hundred miles away because S waves tend to attenuate quickly within Earth. 
A)  have traveled in a straight line through Earth from the source to your detector. 
B)  have not passed through the center of Earth. 
C)  have traveled along the surface of Earth from the source to your detector. 
D)  must have originated only a few hundred miles away because S waves tend to attenuate quickly within Earth.

Question 19

Aurorae occur in the troposphere layer of Earth's atmosphere.

Accepted Answer

A) True 
 B)False

Question 20

Scientists have observed that the ozone hole has completely healed itself in the last decade.

Accepted Answer

A) True 
 B)False

Ozone is very efficient at

Billions of years ago,Earth's atmosphere was composed primarily of carbon dioxide.What happened to much of this carbon dioxide?

In 1985,scientists discovered a region with an abnormally low concentration of ozone over

Because of seafloor spreading,South America and Africa are moving apart at a rate of roughly

The average density of Earth's core is

Earth's magnetic field is caused by

What are the three main classifications of rocks on Earth and how are they formed?

What is the greenhouse effect and what does it mean for life on Earth?

What evidence suggests that all of the continents were merged into a single supercontinent?

The average density of Earth's surface is

Where is the mantle of Earth located?

The albedo of a planet is the fraction of energy that is

A "Slinky" toy is made up of a long flexible spring.The analogous wave to the primary (P)wave produced in an earthquake would be generated by moving the end of the spring

In recent years,geologists have uncovered evidence that suggests that a succession of supercontinents has broken apart and reassembled.

Is there scientific debate over whether or not global warming is occurring?

All the boundaries of the major moving tectonic plates on Earth's surface coincide with

Why is the ozone layer important to humans and what effects have humans had on it?

You are a geologist detecting S (secondary)seismic waves from a source somewhere else on Earth.You know that these S waves

Aurorae occur in the troposphere layer of Earth's atmosphere.

Scientists have observed that the ozone hole has completely healed itself in the last decade.

Predicting the Motions of the Stars, Sun, and Moon

Decoding the Hidden Messages in Starlight

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Predicting the Violent End of the Largest Stars

Exploring Our Galaxy

Investigating Other Galaxies

Observing the Evolution of the Universe

Filters

Exam 5: Uncovering Earths Systems

Ozone is very efficient at

Billions of years ago,Earth's atmosphere was composed primarily of carbon dioxide.What happened to much of this carbon dioxide?

In 1985,scientists discovered a region with an abnormally low concentration of ozone over

Because of seafloor spreading,South America and Africa are moving apart at a rate of roughly

The average density of Earth's core is

Earth's magnetic field is caused by

What are the three main classifications of rocks on Earth and how are they formed?

What is the greenhouse effect and what does it mean for life on Earth?

What evidence suggests that all of the continents were merged into a single supercontinent?

The average density of Earth's surface is

Where is the mantle of Earth located?

The albedo of a planet is the fraction of energy that is

A "Slinky" toy is made up of a long flexible spring.The analogous wave to the primary (P)wave produced in an earthquake would be generated by moving the end of the spring

In recent years,geologists have uncovered evidence that suggests that a succession of supercontinents has broken apart and reassembled.

Is there scientific debate over whether or not global warming is occurring?

All the boundaries of the major moving tectonic plates on Earth's surface coincide with

Why is the ozone layer important to humans and what effects have humans had on it?

You are a geologist detecting S (secondary)seismic waves from a source somewhere else on Earth.You know that these S waves

Aurorae occur in the troposphere layer of Earth's atmosphere.

Scientists have observed that the ozone hole has completely healed itself in the last decade.

Predicting the Motions of the Stars, Sun, and Moon

Decoding the Hidden Messages in Starlight

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Predicting the Violent End of the Largest Stars

Exploring Our Galaxy

Investigating Other Galaxies

Observing the Evolution of the Universe

Filters