Question 1

How have scientists been able to determine that Earth has a liquid metal outer core?

Accepted Answer

Geoscientists can use the arrival times

Question 2

What part of Earth's magnetic field is the first line of defense to solar wind particles?

Accepted Answer

A)  radiation belts 
B)  bow shock 
C)  magnetosphere 
D)  Van Allen belts 
E)  magnetic poles 
A)  radiation belts 
B)  bow shock 
C)  magnetosphere 
D)  Van Allen belts 
E)  magnetic poles

Question 3

Earth displays slower erosion than any other Terrestrial planet.

Accepted Answer

A) True 
 B)False

Question 4

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 5

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

Accepted Answer

Water on Earth may have arrived from the

Question 6

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 7

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

Accepted Answer

Like all Terrestrial planets, Earth was

Question 8

Earth's magnetic field is a direct result of its rapid rotation and its molten metallic core.

Accepted Answer

A) True 
 B)False

Question 9

Based purely on its size, which of these planetary bodies is least geologically active?

Accepted Answer

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

Question 10

There is oxygen in Earth's atmosphere because of plant life.

Accepted Answer

A) True 
 B)False

Question 11

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

How have scientists been able to determine that Earth has a liquid metal outer core?

What part of Earth's magnetic field is the first line of defense to solar wind particles?

Earth displays slower erosion than any other Terrestrial planet.

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

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

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

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

Earth's magnetic field is a direct result of its rapid rotation and its molten metallic core.

Based purely on its size, which of these planetary bodies is least geologically active?

There is oxygen in Earth's atmosphere because of plant life.

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

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

How have scientists been able to determine that Earth has a liquid metal outer core?

What part of Earth's magnetic field is the first line of defense to solar wind particles?

Earth displays slower erosion than any other Terrestrial planet.

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

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

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

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

Earth's magnetic field is a direct result of its rapid rotation and its molten metallic core.

Based purely on its size, which of these planetary bodies is least geologically active?

There is oxygen in Earth's atmosphere because of plant life.

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

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