Question 1

What is the primary cause of the Earth's magnetic field?

Accepted Answer

A) Currents in the Earth's core 
B) Permanent magnetism left over from the formation of the Earth 
C) The flow of ionized gases in the Earth's upper atmosphere 
D) Pockets of solar magnetism captured from the solar wind 
A) Currents in the Earth's core 
B) Permanent magnetism left over from the formation of the Earth 
C) The flow of ionized gases in the Earth's upper atmosphere 
D) Pockets of solar magnetism captured from the solar wind

Question 2

The primary evidence for the existence of a molten core in the Earth is

Accepted Answer

A) The measurement of continental drift 
B) The abnormally high surface temperature of the Earth 
C) The tidal effect of the Moon 
D) The emission of molten lava from volcanoes 
E) Seismic waves from earthquakes 
A) The measurement of continental drift 
B) The abnormally high surface temperature of the Earth 
C) The tidal effect of the Moon 
D) The emission of molten lava from volcanoes 
E) Seismic waves from earthquakes

Question 3

As a result of the Coriolis effect,a missile fired northward toward the equator will seem to be deflected

Accepted Answer

A) Too far to the north 
B) Too far to the south 
C) Toward the west 
D) Toward the east 
A) Too far to the north 
B) Too far to the south 
C) Toward the west 
D) Toward the east

Question 4

The Earth's inner core is in what state?

Accepted Answer

A) solid 
B) liquid 
C) gas 
D) plasma 
A) solid 
B) liquid 
C) gas 
D) plasma

Question 5

What causes the Earth's mesosphere (also known as the ozone layer)to be warmer than layers just above or below it?

Accepted Answer

A) Chemical reactions involving ozone produce heat 
B) Ozone absorbs solar energy 
C) Heat is transported into the ozone layer by convection from the troposphere 
D) Energetic particles hit the mesosphere to produce heat and aurorae 
A) Chemical reactions involving ozone produce heat 
B) Ozone absorbs solar energy 
C) Heat is transported into the ozone layer by convection from the troposphere 
D) Energetic particles hit the mesosphere to produce heat and aurorae

Question 6

Which of the following descriptions of the Earth's core is true?

Accepted Answer

A) Made of metal,denser than the mantle 
B) Made of metal,less dense than the mantle 
C) Made of silicate rock,denser than the mantle 
D) Made of silicate rock,less dense than the mantle 
A) Made of metal,denser than the mantle 
B) Made of metal,less dense than the mantle 
C) Made of silicate rock,denser than the mantle 
D) Made of silicate rock,less dense than the mantle

Question 7

The particles that are found in the Van Allen belts are primarily

Accepted Answer

A) Neutral atoms 
B) Photons 
C) Small rocky particles 
D) Protons and electrons 
A) Neutral atoms 
B) Photons 
C) Small rocky particles 
D) Protons and electrons

Question 8

What is the primary reason that aurorae are more likely to be seen in Canada and Alaska than in Iowa?

Accepted Answer

A) The particles that produce aurorae strike the atmosphere only near the poles 
B) There are fewer hours of nighttime each year in Iowa than in Canada 
C) Aurorae can only be seen above the Arctic Circle 
D) Aurorae are sunlight reflected from snow,which is more common in Canada 
A) The particles that produce aurorae strike the atmosphere only near the poles 
B) There are fewer hours of nighttime each year in Iowa than in Canada 
C) Aurorae can only be seen above the Arctic Circle 
D) Aurorae are sunlight reflected from snow,which is more common in Canada

What is the primary cause of the Earth's magnetic field?

The primary evidence for the existence of a molten core in the Earth is

As a result of the Coriolis effect,a missile fired northward toward the equator will seem to be deflected

The Earth's inner core is in what state?

What causes the Earth's mesosphere (also known as the ozone layer)to be warmer than layers just above or below it?

Which of the following descriptions of the Earth's core is true?

The particles that are found in the Van Allen belts are primarily

What is the primary reason that aurorae are more likely to be seen in Canada and Alaska than in Iowa?

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Exam 8: The Earth

What is the primary cause of the Earth's magnetic field?

The primary evidence for the existence of a molten core in the Earth is

As a result of the Coriolis effect,a missile fired northward toward the equator will seem to be deflected

The Earth's inner core is in what state?

What causes the Earth's mesosphere (also known as the ozone layer)to be warmer than layers just above or below it?

Which of the following descriptions of the Earth's core is true?

The particles that are found in the Van Allen belts are primarily

What is the primary reason that aurorae are more likely to be seen in Canada and Alaska than in Iowa?

Journeys Start

Patterns in the Sky

Ancient Astronomy

Renaissance Astronomy

Gravity and Motion

Light and Telescopes

Overview of the Solar System

The Moon

Mercury and Venus

Mars

Jupiter and Saturn

The Outer Solar System

Satellites

Small Solar System Bodies

Basic Properties of Stars

The Sun

The Formation of Stars and Planets

The Evolution of Stars

White Dwarfs, neutron Stars, and Black Holes

Binary Star Systems

The Milky Way

Galaxies

Quasars and Other Active Galaxies

Galaxy Clusters and the Structure of the Universe

Cosmology

Life in the Universe

Filters