Question 1

Earth displays slower erosion than any other Terrestrial planet.

Accepted Answer

A) True 
 B)False

Question 2

Why is the very center of Earth's core a solid and not a liquid?

Accepted Answer

A)  There is less metal in the central core. 
B)  The central core has a combination of gases with the metals. 
C)  Accretion "seeded" Earth with a solid central core. 
D)  The pressure at the central core raises the melting point of the metals higher than its temperature. 
E)  The central core is a frozen block of water ice. 
A)  There is less metal in the central core. 
B)  The central core has a combination of gases with the metals. 
C)  Accretion "seeded" Earth with a solid central core. 
D)  The pressure at the central core raises the melting point of the metals higher than its temperature. 
E)  The central core is a frozen block of water ice.

Question 3

Mantle material behaves like a gas.

Accepted Answer

A) True 
 B)False

Question 4

Internal heat forces Earth's liquid core to circulate with _______________.

Accepted Answer

The answer of Internal heat forces Earth's liquid core to...

Question 5

Which of the Terrestrial planets is considered a "water world"?

Accepted Answer

A)  Mercury 
B)  Venus 
C)  Earth 
D)  Mars 
E)  Neptune 
A)  Mercury 
B)  Venus 
C)  Earth 
D)  Mars 
E)  Neptune

Question 6

With the understanding of differentiation, which layer of Earth would be the densest?

Accepted Answer

A)  lithosphere 
B)  core 
C)  crust 
D)  hydrosphere 
E)  mantle 
A)  lithosphere 
B)  core 
C)  crust 
D)  hydrosphere 
E)  mantle

Question 7

Earth's core is hot, dense, and mostly composed of iron and nickel.

Accepted Answer

A) True 
 B)False

Question 8

Terrestrial worlds are all differentiated, which means they are separated into layers of different _______________.

Accepted Answer

The answer of Terrestrial worlds are all differentiated, which means...

Question 9

It is believed that there was a heavy bombardment of planetesimals at what stage in planetary development?

Accepted Answer

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

Question 10

Where can you find a midocean rise?

Accepted Answer

A)  Mediterranean Sea 
B)  Pacific Ocean 
C)  Arctic Ocean 
D)  Red Sea 
E)  Indian Ocean 
A)  Mediterranean Sea 
B)  Pacific Ocean 
C)  Arctic Ocean 
D)  Red Sea 
E)  Indian Ocean

Question 11

Pressure (P) waves move as displacements of particles perpendicular to the waves' direction of travel.

Accepted Answer

A) True 
 B)False

Earth displays slower erosion than any other Terrestrial planet.

Why is the very center of Earth's core a solid and not a liquid?

Mantle material behaves like a gas.

Internal heat forces Earth's liquid core to circulate with _______________.

Which of the Terrestrial planets is considered a "water world"?

With the understanding of differentiation, which layer of Earth would be the densest?

Earth's core is hot, dense, and mostly composed of iron and nickel.

Terrestrial worlds are all differentiated, which means they are separated into layers of different _______________.

It is believed that there was a heavy bombardment of planetesimals at what stage in planetary development?

Where can you find a midocean rise?

Pressure (P) waves move as displacements of particles perpendicular to the waves' direction of travel.

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

Exam 20: Earth the Active Planet

Earth displays slower erosion than any other Terrestrial planet.

Why is the very center of Earth's core a solid and not a liquid?

Mantle material behaves like a gas.

Internal heat forces Earth's liquid core to circulate with _______________.

Which of the Terrestrial planets is considered a "water world"?

With the understanding of differentiation, which layer of Earth would be the densest?

Earth's core is hot, dense, and mostly composed of iron and nickel.

Terrestrial worlds are all differentiated, which means they are separated into layers of different _______________.

It is believed that there was a heavy bombardment of planetesimals at what stage in planetary development?

Where can you find a midocean rise?

Pressure (P) waves move as displacements of particles perpendicular to the waves' direction of travel.

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