Physical Geography: Earth Environments and Systems
Comprehensive Examination QUESTIONS AND ANSWERS 2026
SECTION A: TRUE/FALSE QUESTIONS
1. Most Earth subsystems are open systems.
a. True
b. False
ANSWER: a. True
RATIONALE:
Option A (True): Correct. Most Earth subsystems exchange both energy and matter with their
surroundings, which is the defining characteristic of open systems. The atmosphere, hydrosphere, and
biosphere all freely exchange energy and materials across their boundaries .
Option B (False): Incorrect because this would suggest most subsystems are closed systems, which only
exchange energy but not matter. While Earth as a whole approximates a closed system for matter, its
subsystems are predominantly open.
2. Systems analysis involves defining a system, breaking the system down into its components, and
examining how the components interact with one another.
a. True
b. False
ANSWER: a. True
RATIONALE:
,Option A (True): Correct. This accurately describes the fundamental approach of systems analysis in
physical geography, where researchers identify system boundaries, inventory components, and study
the relationships and feedback mechanisms between those components .
Option B (False): Incorrect because this would contradict the established methodology of systems
analysis as taught in physical geography textbooks.
3. Negative feedback is an "unnatural process" that is generally detrimental to the functioning of an
environmental system.
a. True
b. False
ANSWER: b. False
RATIONALE:
Option A (True): Incorrect. This is a fundamental misunderstanding. Negative feedback is a natural and
essential process that maintains stability in environmental systems by counteracting changes and
restoring equilibrium.
Option B (False): Correct. Negative feedback mechanisms are natural, beneficial, and crucial for system
stability. They work to dampen fluctuations and maintain balance within Earth's systems.
4. A conceptual model of a place and its spatial components is called a "mental map".
a. True
b. False
ANSWER: a. True
RATIONALE:
,Option A (True): Correct. Mental maps are internal representations of spatial information that
individuals develop through experience and learning, allowing them to understand and navigate their
environment.
Option B (False): Incorrect because "mental map" is indeed the correct term for this conceptual model in
geography.
5. If an increase in a deer population depletes the animals' food supplies, leading to a decrease in
population back toward the original number, this would be an example of a positive feedback.
a. True
b. False
ANSWER: b. False
RATIONALE:
Option A (True): Incorrect. This scenario describes negative feedback because the system responds to a
change by counteracting it and returning toward equilibrium.
Option B (False): Correct. This is an example of negative feedback, where the initial change (population
increase) triggers a response (food depletion) that reverses the change. Positive feedback would amplify
the initial change rather than dampen it.
6. Physical geography is primarily concerned with human cultural landscapes and urban development
patterns.
a. True
b. False
ANSWER: b. False
RATIONALE:
, Option A (True): Incorrect. These topics fall under human geography, not physical geography.
Option B (False): Correct. Physical geography focuses on natural features and processes of Earth,
including landforms, climate, soils, vegetation, and the interactions among Earth's systems .
7. Geography is studied from three perspectives: as a physical science, a spatial science, and an
environmental science.
a. True
b. False
ANSWER: a. True
RATIONALE:
Option A (True): Correct. Petersen, Sack, and Gabler emphasize these three essential perspectives in
physical geography, examining Earth as a physical system, analyzing spatial distributions, and
investigating environmental interactions .
Option B (False): Incorrect because this is a well-established framework in the textbook for
understanding geography's disciplinary scope.
8. The Earth as a whole is considered an open system for both energy and matter.
a. True
b. False
ANSWER: b. False
RATIONALE:
Comprehensive Examination QUESTIONS AND ANSWERS 2026
SECTION A: TRUE/FALSE QUESTIONS
1. Most Earth subsystems are open systems.
a. True
b. False
ANSWER: a. True
RATIONALE:
Option A (True): Correct. Most Earth subsystems exchange both energy and matter with their
surroundings, which is the defining characteristic of open systems. The atmosphere, hydrosphere, and
biosphere all freely exchange energy and materials across their boundaries .
Option B (False): Incorrect because this would suggest most subsystems are closed systems, which only
exchange energy but not matter. While Earth as a whole approximates a closed system for matter, its
subsystems are predominantly open.
2. Systems analysis involves defining a system, breaking the system down into its components, and
examining how the components interact with one another.
a. True
b. False
ANSWER: a. True
RATIONALE:
,Option A (True): Correct. This accurately describes the fundamental approach of systems analysis in
physical geography, where researchers identify system boundaries, inventory components, and study
the relationships and feedback mechanisms between those components .
Option B (False): Incorrect because this would contradict the established methodology of systems
analysis as taught in physical geography textbooks.
3. Negative feedback is an "unnatural process" that is generally detrimental to the functioning of an
environmental system.
a. True
b. False
ANSWER: b. False
RATIONALE:
Option A (True): Incorrect. This is a fundamental misunderstanding. Negative feedback is a natural and
essential process that maintains stability in environmental systems by counteracting changes and
restoring equilibrium.
Option B (False): Correct. Negative feedback mechanisms are natural, beneficial, and crucial for system
stability. They work to dampen fluctuations and maintain balance within Earth's systems.
4. A conceptual model of a place and its spatial components is called a "mental map".
a. True
b. False
ANSWER: a. True
RATIONALE:
,Option A (True): Correct. Mental maps are internal representations of spatial information that
individuals develop through experience and learning, allowing them to understand and navigate their
environment.
Option B (False): Incorrect because "mental map" is indeed the correct term for this conceptual model in
geography.
5. If an increase in a deer population depletes the animals' food supplies, leading to a decrease in
population back toward the original number, this would be an example of a positive feedback.
a. True
b. False
ANSWER: b. False
RATIONALE:
Option A (True): Incorrect. This scenario describes negative feedback because the system responds to a
change by counteracting it and returning toward equilibrium.
Option B (False): Correct. This is an example of negative feedback, where the initial change (population
increase) triggers a response (food depletion) that reverses the change. Positive feedback would amplify
the initial change rather than dampen it.
6. Physical geography is primarily concerned with human cultural landscapes and urban development
patterns.
a. True
b. False
ANSWER: b. False
RATIONALE:
, Option A (True): Incorrect. These topics fall under human geography, not physical geography.
Option B (False): Correct. Physical geography focuses on natural features and processes of Earth,
including landforms, climate, soils, vegetation, and the interactions among Earth's systems .
7. Geography is studied from three perspectives: as a physical science, a spatial science, and an
environmental science.
a. True
b. False
ANSWER: a. True
RATIONALE:
Option A (True): Correct. Petersen, Sack, and Gabler emphasize these three essential perspectives in
physical geography, examining Earth as a physical system, analyzing spatial distributions, and
investigating environmental interactions .
Option B (False): Incorrect because this is a well-established framework in the textbook for
understanding geography's disciplinary scope.
8. The Earth as a whole is considered an open system for both energy and matter.
a. True
b. False
ANSWER: b. False
RATIONALE:
