Question 1

Why can we not see as many craters on Earth as on the Moon?

Accepted Answer

Like all Terrestrial planets, Earth was

Question 2

The first stage in planetary evolution is cratering.

Accepted Answer

A) True 
 B)False

Question 3

Why do scientist refer to Earth's mantle as a plastic?

Accepted Answer

A)  The mantle has the properties of a solid, but can flow under pressure. 
B)  The mantle has the mixed properties of a solid and a liquid. 
C)  The mantle frequently shifts between its states of matter. 
D)  The mantle is a softer solid as it approaches the core. 
E)  The mantle has the properties of a liquid, but is limited in its movement. 
A)  The mantle has the properties of a solid, but can flow under pressure. 
B)  The mantle has the mixed properties of a solid and a liquid. 
C)  The mantle frequently shifts between its states of matter. 
D)  The mantle is a softer solid as it approaches the core. 
E)  The mantle has the properties of a liquid, but is limited in its movement.

Question 4

Which stage of planetary development has all but eliminated much of Earth's surface history?

Accepted Answer

A)  flooding 
B)  cratering 
C)  differentiation 
D)  bombardment 
E)  slow surface evolution 
A)  flooding 
B)  cratering 
C)  differentiation 
D)  bombardment 
E)  slow surface evolution

Question 5

Explain the greenhouse effect and the impact made by humans on the greenhouse effect.

Accepted Answer

With the greenhouse effect,visual-wavele

Question 6

What form of seismic waves travel in compressions and decompressions?

Accepted Answer

A)  systematic waves 
B)  earthquake waves 
C)  pressure waves 
D)  shear waves 
E)  gravity waves 
A)  systematic waves 
B)  earthquake waves 
C)  pressure waves 
D)  shear waves 
E)  gravity waves

Question 7

The formation of the Red Sea as Africa pulls apart from the Arabian peninsula is an example of what geological feature?

Accepted Answer

A)  subduction zone 
B)  midocean rise 
C)  ocean spreading 
D)  rift valley 
E)  volcanic eruption 
A)  subduction zone 
B)  midocean rise 
C)  ocean spreading 
D)  rift valley 
E)  volcanic eruption

Question 8

What is responsible for much of the erosion of Earth's surface?

Accepted Answer

A)  lava flows 
B)  solar wind 
C)  impact craters 
D)  convection 
E)  water 
A)  lava flows 
B)  solar wind 
C)  impact craters 
D)  convection 
E)  water

Question 9

A plate sliding into a subduction zone can trigger ____.

Accepted Answer

A)  midocean rise 
B)  cratering 
C)  volcanism 
D)  hurricanes 
E)  erosion 
A)  midocean rise 
B)  cratering 
C)  volcanism 
D)  hurricanes 
E)  erosion

Question 10

What is the current debate about the origin of water on Earth?

Accepted Answer

Water on Earth may have arrived from the

Question 11

In comparing the Terrestrial planets, which planet is most similar in size to Earth?

Accepted Answer

A)  Mercury 
B)  Venus 
C)  Mars 
D)  the Moon 
E)  Neptune 
A)  Mercury 
B)  Venus 
C)  Mars 
D)  the Moon 
E)  Neptune

Question 12

What important role does the ozone layer play in Earth's atmosphere?

Accepted Answer

A)  The ozone layer absorbs ultraviolet photons. 
B)  The ozone layer traps in infared radiation. 
C)  The ozone layer produces water vapor. 
D)  The ozone layer traps in UV radiation. 
E)  The ozone layer produces the oxygen needed for life. 
A)  The ozone layer absorbs ultraviolet photons. 
B)  The ozone layer traps in infared radiation. 
C)  The ozone layer produces water vapor. 
D)  The ozone layer traps in UV radiation. 
E)  The ozone layer produces the oxygen needed for life.

Question 13

Earth's upper atmosphere is protected from infrared radiation by an ozone layer.

Accepted Answer

A) True 
 B)False

Question 14

The region controlled by Earth's magnetic field is the _______________.

Accepted Answer

The answer of The region controlled by Earth's magnetic field...

Question 15

Venus, which is 95 percent the diameter of Earth, has a(n) _______________ atmosphere.

Accepted Answer

The answer of Venus, which is 95 percent the diameter...

Question 16

What theoryexplains the movement of the continents on Earth's surface?

Accepted Answer

A)  continental spreading 
B)  continental drift 
C)  continental tectonics 
D)  continental rifting 
E)  continental rise 
A)  continental spreading 
B)  continental drift 
C)  continental tectonics 
D)  continental rifting 
E)  continental rise

Question 17

If plate tectonics is what builds up Earth's mountains and continents, then what process tears them down?

Accepted Answer

A)  convection 
B)  volcanism 
C)  cratering 
D)  erosion 
E)  accretion 
A)  convection 
B)  volcanism 
C)  cratering 
D)  erosion 
E)  accretion

Question 18

When Earth was young, its atmosphere had no free ____.

Accepted Answer

A)  nitrogen 
B)  oxygen 
C)  helium 
D)  carbon dioxide 
E)  water vapor 
A)  nitrogen 
B)  oxygen 
C)  helium 
D)  carbon dioxide 
E)  water vapor

Question 19

Where would you find Van Allen belts of radiation?

Accepted Answer

A)  Within Earth's core 
B)  Within Earth's ozone layer 
C)  Within Earth's magnetosphere 
D)  Within Earth's mantle 
E)  Within Earth's subduction zones 
A)  Within Earth's core 
B)  Within Earth's ozone layer 
C)  Within Earth's magnetosphere 
D)  Within Earth's mantle 
E)  Within Earth's subduction zones

Question 20

Which element would not have been found in Earth's early atmosphere? What is the most abundant gas found in Earth's atmosphere today?

Accepted Answer

A)  nitrogen (N2) 
B)  carbon dioxide (CO2) 
C)  helium (He) 
D)  hydrogen (H) 
E)  oxygen (O2) 
A)  nitrogen (N2) 
B)  carbon dioxide (CO2) 
C)  helium (He) 
D)  hydrogen (H) 
E)  oxygen (O2)

Exam 20: Earth the Active Planet

Why can we not see as many craters on Earth as on the Moon?

The first stage in planetary evolution is cratering.

Why do scientist refer to Earth's mantle as a plastic?

Which stage of planetary development has all but eliminated much of Earth's surface history?

Explain the greenhouse effect and the impact made by humans on the greenhouse effect.

What form of seismic waves travel in compressions and decompressions?

The formation of the Red Sea as Africa pulls apart from the Arabian peninsula is an example of what geological feature?

What is responsible for much of the erosion of Earth's surface?

A plate sliding into a subduction zone can trigger ____.

What is the current debate about the origin of water on Earth?

In comparing the Terrestrial planets, which planet is most similar in size to Earth?

What important role does the ozone layer play in Earth's atmosphere?

Earth's upper atmosphere is protected from infrared radiation by an ozone layer.

The region controlled by Earth's magnetic field is the _______________.

Venus, which is 95 percent the diameter of Earth, has a(n) _______________ atmosphere.

What theoryexplains the movement of the continents on Earth's surface?

If plate tectonics is what builds up Earth's mountains and continents, then what process tears them down?

When Earth was young, its atmosphere had no free ____.

Where would you find Van Allen belts of radiation?

Which element would not have been found in Earth's early atmosphere? What is the most abundant gas found in Earth's atmosphere today?

Here and Now

A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

Astrobiology

Filters