Question 1

Why is the Earth-Moon system unique compared to other planet-moon systems in the Solar System?

Accepted Answer

The Moon has a much

Question 2

Maria are:

Accepted Answer

A)  captured moons of the gas giant planets. 
B)  massive volcanoes on Mars. 
C)  asteroids that trail in Jupiter's orbit. 
D)  dark areas on the lunar surface with relatively few craters. 
A)  captured moons of the gas giant planets. 
B)  massive volcanoes on Mars. 
C)  asteroids that trail in Jupiter's orbit. 
D)  dark areas on the lunar surface with relatively few craters.

Question 3

Why has the surface temperature of Earth varied throughout geologic history?

Accepted Answer

Because of greenhous

Question 4

If Earth's Moon were less massive,which of the following would be most likely to occur?

Accepted Answer

A)  Earth's climate would become less stable. 
B)  Earth would move to a wider orbit around the Sun. 
C)  Solar eclipses would be more common. 
D)  The Moon would spin faster. 
A)  Earth's climate would become less stable. 
B)  Earth would move to a wider orbit around the Sun. 
C)  Solar eclipses would be more common. 
D)  The Moon would spin faster.

Question 5

During a field reversal,Earth:

Accepted Answer

A)  has a solid inner and outer iron core. 
B)  has a stronger bow shock. 
C)  experiences a greater flux of particles from the solar wind. 
D)  experiences more geologic activity than average. 
A)  has a solid inner and outer iron core. 
B)  has a stronger bow shock. 
C)  experiences a greater flux of particles from the solar wind. 
D)  experiences more geologic activity than average.

Question 6

A planet is most likely to lose its atmosphere if it:

Accepted Answer

A)  accretes more mass. 
B)  becomes geologically active. 
C)  heats up. 
D)  forms heavy molecules within its atmosphere. 
A)  accretes more mass. 
B)  becomes geologically active. 
C)  heats up. 
D)  forms heavy molecules within its atmosphere.

Question 7

The refraction of P-waves in the mantle is due to:

Accepted Answer

A)  the semimolten state of the mantle. 
B)  convection. 
C)  changes in the density. 
D)  radioactive decays. 
A)  the semimolten state of the mantle. 
B)  convection. 
C)  changes in the density. 
D)  radioactive decays.

Question 8

The figure below shows a diagram of Earth's interior.Name the layers shown here,and identify their principal compositions.

Accepted Answer

From left to right:

Question 9

If the greenhouse effect were to increase in importance,so that the temperature of Earth's atmosphere increased,then Earth's surface would radiate:

Accepted Answer

A)  the same amount of energy into space as it does now. 
B)  more energy into space than it does now, with most of it in the visible. 
C)  more energy into space than it does now, with most of it in the infrared. 
D)  less energy into space than it does now. 
A)  the same amount of energy into space as it does now. 
B)  more energy into space than it does now, with most of it in the visible. 
C)  more energy into space than it does now, with most of it in the infrared. 
D)  less energy into space than it does now.

Question 10

Earth's magnetic field is created by:

Accepted Answer

A)  the magnetized inner core. 
B)  iron deposits in the crust. 
C)  interactions with the solar wind. 
D)  currents in the outer core. 
A)  the magnetized inner core. 
B)  iron deposits in the crust. 
C)  interactions with the solar wind. 
D)  currents in the outer core.

Question 11

Tidal locking is responsible for:

Accepted Answer

A)  the Sun's rotation period. 
B)  Earth's orbital period. 
C)  the Moon's rotation period. 
D)  the Venus-Mercury conjunction. 
A)  the Sun's rotation period. 
B)  Earth's orbital period. 
C)  the Moon's rotation period. 
D)  the Venus-Mercury conjunction.

Question 12

The atmospheric layer in which most weather occurs is the:

Accepted Answer

A)  troposphere. 
B)  mesosphere. 
C)  stratosphere. 
D)  ionosphere. 
A)  troposphere. 
B)  mesosphere. 
C)  stratosphere. 
D)  ionosphere.

Question 13

When a cup of coffee cools through rising and falling motions of the fluid,we say it undergoes:

Accepted Answer

A)  plume formation. 
B)  radiation. 
C)  convection. 
D)  conduction. 
A)  plume formation. 
B)  radiation. 
C)  convection. 
D)  conduction.

Question 14

If the amount of ozone in the atmosphere decreased,which of the following would be most likely to occur?

Accepted Answer

A)  Global surface temperatures would increase. 
B)  Seasonal changes would moderate. 
C)  The temperature inversion in the stratosphere would moderate. 
D)  The amount of ultraviolet radiation reaching Earth's surface would decrease. 
A)  Global surface temperatures would increase. 
B)  Seasonal changes would moderate. 
C)  The temperature inversion in the stratosphere would moderate. 
D)  The amount of ultraviolet radiation reaching Earth's surface would decrease.

Question 15

Which of the following is true of Earth's crust?

Accepted Answer

A)  The ocean floor is much younger than the continental material. 
B)  It is divided into two major plates. 
C)  It is the thickest layer of Earth. 
D)  It has a composition most similar to the outer core. 
A)  The ocean floor is much younger than the continental material. 
B)  It is divided into two major plates. 
C)  It is the thickest layer of Earth. 
D)  It has a composition most similar to the outer core.

Question 16

Spring tides occur:

Accepted Answer

A)  during new and full moons. 
B)  during first quarter moons. 
C)  at the vernal equinox. 
D)  during new moons. 
A)  during new and full moons. 
B)  during first quarter moons. 
C)  at the vernal equinox. 
D)  during new moons.

Question 17

Which of the following is NOT a common result of the collision of two plates?

Accepted Answer

A)  earthquakes 
B)  volcanoes 
C)  mid-ocean ridges 
D)  mountain ranges 
A)  earthquakes 
B)  volcanoes 
C)  mid-ocean ridges 
D)  mountain ranges

Question 18

What kind of magnet does Earth's magnetic field most closely resemble?

Accepted Answer

The answer of What kind of magnet does Earth's magnetic...

Question 19

Half of the carbon-14 in a rock decays to nitrogen-14 after about 5,700 years.How long would it take before there is seven times as much carbon-14 as nitrogen-14 (i.e.the composition of the sample is 7/8 carbon-14)?

Accepted Answer

The answer of Half of the carbon-14 in a rock...

Question 20

How is the heat powering a shield volcano generated and transported?

Accepted Answer

The heat is generated by radio

Why is the Earth-Moon system unique compared to other planet-moon systems in the Solar System?

Maria are:

Why has the surface temperature of Earth varied throughout geologic history?

If Earth's Moon were less massive,which of the following would be most likely to occur?

During a field reversal,Earth:

A planet is most likely to lose its atmosphere if it:

The refraction of P-waves in the mantle is due to:

The figure below shows a diagram of Earth's interior.Name the layers shown here,and identify their principal compositions.

If the greenhouse effect were to increase in importance,so that the temperature of Earth's atmosphere increased,then Earth's surface would radiate:

Earth's magnetic field is created by:

Tidal locking is responsible for:

The atmospheric layer in which most weather occurs is the:

When a cup of coffee cools through rising and falling motions of the fluid,we say it undergoes:

If the amount of ozone in the atmosphere decreased,which of the following would be most likely to occur?

Which of the following is true of Earth's crust?

Spring tides occur:

Which of the following is NOT a common result of the collision of two plates?

What kind of magnet does Earth's magnetic field most closely resemble?

Half of the carbon-14 in a rock decays to nitrogen-14 after about 5,700 years.How long would it take before there is seven times as much carbon-14 as nitrogen-14 (i.e.the composition of the sample is 7/8 carbon-14)?

How is the heat powering a shield volcano generated and transported?

Getting Started: Science, astronomy, and Being Human

A Universe Made, a Universe Discovered

A Universe of Universal Laws

A Universe of Universal Laws

The Architecture and Birth of Planetary Systems

Sibling Worlds: Mercury, Venus, and Mars

Gas, ice, and Stone: the Outer Planets

Life and the Search for Habitable Worlds

The Sun As a Star

Measuring the Stars: the Main Sequence and Its Meaning

Nursery of the Stars: the Interstellar Medium and Star Formation

To the Graveyard of Stars: the End Points of Stellar Evolution

Down the Rabbit Hole: Relativity and Black Holes

Our City of Stars: the Milky Way

A Universe of Galaxies

The Cosmic Web: the Large-Scale Structure of the Universe

Cosmology

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Exam 6: Home Base: Earth and Moon

Why is the Earth-Moon system unique compared to other planet-moon systems in the Solar System?

Maria are:

Why has the surface temperature of Earth varied throughout geologic history?

If Earth's Moon were less massive,which of the following would be most likely to occur?

During a field reversal,Earth:

A planet is most likely to lose its atmosphere if it:

The refraction of P-waves in the mantle is due to:

The figure below shows a diagram of Earth's interior.Name the layers shown here,and identify their principal compositions.

If the greenhouse effect were to increase in importance,so that the temperature of Earth's atmosphere increased,then Earth's surface would radiate:

Earth's magnetic field is created by:

Tidal locking is responsible for:

The atmospheric layer in which most weather occurs is the:

When a cup of coffee cools through rising and falling motions of the fluid,we say it undergoes:

If the amount of ozone in the atmosphere decreased,which of the following would be most likely to occur?

Which of the following is true of Earth's crust?

Spring tides occur:

Which of the following is NOT a common result of the collision of two plates?

What kind of magnet does Earth's magnetic field most closely resemble?

Half of the carbon-14 in a rock decays to nitrogen-14 after about 5,700 years.How long would it take before there is seven times as much carbon-14 as nitrogen-14 (i.e.the composition of the sample is 7/8 carbon-14)?

How is the heat powering a shield volcano generated and transported?

Getting Started: Science, astronomy, and Being Human

A Universe Made, a Universe Discovered

A Universe of Universal Laws

A Universe of Universal Laws

The Architecture and Birth of Planetary Systems

Sibling Worlds: Mercury, Venus, and Mars

Gas, ice, and Stone: the Outer Planets

Life and the Search for Habitable Worlds

The Sun As a Star

Measuring the Stars: the Main Sequence and Its Meaning

Nursery of the Stars: the Interstellar Medium and Star Formation

To the Graveyard of Stars: the End Points of Stellar Evolution

Down the Rabbit Hole: Relativity and Black Holes

Our City of Stars: the Milky Way

A Universe of Galaxies

The Cosmic Web: the Large-Scale Structure of the Universe

Cosmology

Filters