Earth: Mastering Physical Geology 13th
Edition (2020) – Clear Concepts, Practical
Examples & Exam-Ready Insights
What does uniformitarianism suggest?
The physical, chemical, and biologic laws that operate today have operated throughout the
geologic past.
How old is Earth?
Approximately 4.6 billion years old.
What is a hypothesis in scientific inquiry?
A tentative (or untested) explanation that must fit observations and be testable.
What is a scientific theory?
A well-tested and widely accepted view that best explains certain observable facts.
What is the scientific method?
The process by which researchers raise questions, gather data, and formulate and test scientific
hypotheses.
What are the four interacting parts of Earth as a system?
Hydrosphere, atmosphere, geosphere, and biosphere.
What is Earth system science?
The study of Earth as a system composed of numerous interacting parts.
What is the nebular theory?
The theory that the solar system formed from an enormous rotating cloud called the solar nebula.
What caused the solar nebula to collapse?
Possibly a supernova explosion.
What forms the protosun?
Most of the matter condensing into the center of the collapsing solar nebula.
What materials formed the inner planets?
Metallic and rocky substances.
What materials formed the larger outer planets?
Fragments of ices such as H2O and CO2.
What is the significance of the scientific inquiry process?
It helps to produce knowledge based on observations and explanations.
What is the relationship between geologic processes and time?
Geologic processes vary in intensity but take a very long time to create or destroy major
landscape features.
What role does data play in science?
Data are essential to science and the development of scientific theories.
What is the impact of human activities on climate?
Human activities influence changes in climate globally.
What is the goal of science?
To discover patterns in nature and use that knowledge to make predictions.
, What is geology?
The science that pursues an understanding of planet Earth.
What does physical geology examine?
Materials composing Earth and processes operating beneath and on the surface.
What is historical geology focused on?
Understanding the origin of Earth and its development through time.
What are natural hazards studied by geologists?
Volcanoes, floods, tsunamis, earthquakes, and landslides.
How does world population growth affect geologic hazards?
It increases the risk of death and damage from significant geologic hazards.
What is catastrophism?
The idea that Earth's landscapes are shaped primarily by catastrophes.
Who proposed the theory of uniformitarianism?
James Hutton.
What is the significance of studying geology?
It helps understand natural hazards, resources, and the processes shaping the Earth.
What are the three basic divisions of Earth's interior?
Core, mantle, and crust.
What is the composition of the Earth's crust?
It is divided into continental and oceanic crust; oceanic crust is primarily basalt, while
continental crust is primarily granodiorite.
How thick is the oceanic crust?
Approximately 7 kilometers.
What is the thickness of the continental crust?
35-70 kilometers.
What is the mantle composed of?
Approximately 2900 kilometers thick and composed of peridotite.
What is the core of the Earth composed of?
An iron-nickel alloy..
What are sedimentary rocks derived from?
Weathering of preexisting rocks.
What drives the formation of metamorphic rocks?
Heat and pressure that change preexisting rocks.
What is the average depth of ocean basins?
3.8 kilometers below sea level.
What are continental margins?
The portion of the seafloor adjacent to major landmasses.
What is the continental shelf?
A gently sloping region of continental crust extending from the shore.
What is the continental slope?
A relatively steep drop-off that extends from the continental shelf to the deep ocean floor.
What is the abyssal plain?
A flat feature of the deep ocean basin.
What are seamounts?
Small volcanic structures that dot the ocean floor.
Edition (2020) – Clear Concepts, Practical
Examples & Exam-Ready Insights
What does uniformitarianism suggest?
The physical, chemical, and biologic laws that operate today have operated throughout the
geologic past.
How old is Earth?
Approximately 4.6 billion years old.
What is a hypothesis in scientific inquiry?
A tentative (or untested) explanation that must fit observations and be testable.
What is a scientific theory?
A well-tested and widely accepted view that best explains certain observable facts.
What is the scientific method?
The process by which researchers raise questions, gather data, and formulate and test scientific
hypotheses.
What are the four interacting parts of Earth as a system?
Hydrosphere, atmosphere, geosphere, and biosphere.
What is Earth system science?
The study of Earth as a system composed of numerous interacting parts.
What is the nebular theory?
The theory that the solar system formed from an enormous rotating cloud called the solar nebula.
What caused the solar nebula to collapse?
Possibly a supernova explosion.
What forms the protosun?
Most of the matter condensing into the center of the collapsing solar nebula.
What materials formed the inner planets?
Metallic and rocky substances.
What materials formed the larger outer planets?
Fragments of ices such as H2O and CO2.
What is the significance of the scientific inquiry process?
It helps to produce knowledge based on observations and explanations.
What is the relationship between geologic processes and time?
Geologic processes vary in intensity but take a very long time to create or destroy major
landscape features.
What role does data play in science?
Data are essential to science and the development of scientific theories.
What is the impact of human activities on climate?
Human activities influence changes in climate globally.
What is the goal of science?
To discover patterns in nature and use that knowledge to make predictions.
, What is geology?
The science that pursues an understanding of planet Earth.
What does physical geology examine?
Materials composing Earth and processes operating beneath and on the surface.
What is historical geology focused on?
Understanding the origin of Earth and its development through time.
What are natural hazards studied by geologists?
Volcanoes, floods, tsunamis, earthquakes, and landslides.
How does world population growth affect geologic hazards?
It increases the risk of death and damage from significant geologic hazards.
What is catastrophism?
The idea that Earth's landscapes are shaped primarily by catastrophes.
Who proposed the theory of uniformitarianism?
James Hutton.
What is the significance of studying geology?
It helps understand natural hazards, resources, and the processes shaping the Earth.
What are the three basic divisions of Earth's interior?
Core, mantle, and crust.
What is the composition of the Earth's crust?
It is divided into continental and oceanic crust; oceanic crust is primarily basalt, while
continental crust is primarily granodiorite.
How thick is the oceanic crust?
Approximately 7 kilometers.
What is the thickness of the continental crust?
35-70 kilometers.
What is the mantle composed of?
Approximately 2900 kilometers thick and composed of peridotite.
What is the core of the Earth composed of?
An iron-nickel alloy..
What are sedimentary rocks derived from?
Weathering of preexisting rocks.
What drives the formation of metamorphic rocks?
Heat and pressure that change preexisting rocks.
What is the average depth of ocean basins?
3.8 kilometers below sea level.
What are continental margins?
The portion of the seafloor adjacent to major landmasses.
What is the continental shelf?
A gently sloping region of continental crust extending from the shore.
What is the continental slope?
A relatively steep drop-off that extends from the continental shelf to the deep ocean floor.
What is the abyssal plain?
A flat feature of the deep ocean basin.
What are seamounts?
Small volcanic structures that dot the ocean floor.
