WGU C165
Objective Assessment 2026 | Integrated Physical Sciences
| Exam Prep, Practice Questions, Answers & Detailed
Explanations
WHAT'S INCLUDED
• WGU C165 Integrated Physical Sciences practice
questions
• C165 Objective Assessment exam preparation
• Practice questions with answers
• Detailed explanations/rationales
, WGU C165 Objective Assessment 2026 |
Integrated Physical Sciences | Exam Prep, Practice
Questions, Answers & Detailed Explanations
1. What is a controlled experiment?
A) An experiment where scientists observe nature without
interference
B) An experiment in which a scientist intentionally changes one
quantity and observes how another quantity changes
C) An experiment conducted only in a laboratory setting
D) An experiment that uses computer simulations
Answer: B
Rationale: A controlled experiment is defined as an experiment in
which a scientist intentionally changes one quantity and observes
how another quantity changes. This distinguishes it from
observational studies where researchers do not attempt to
change the system being studied.
2. What are variables in an experiment?
A) The fixed quantities that never change
B) The changing quantities in an experiment
,C) The final results of the experiment
D) The equipment used in the experiment
Answer: B
Rationale: Variables are the changing quantities in an
experiment. They are the factors that can vary or be varied during
the course of an investigation.
3. What is an independent variable?
A) The variable that changes because of another variable
B) The variable that scientists do not wish to study
C) The variable that is changed by the experimenter in an
experiment
D) The variable that remains constant throughout the experiment
Answer: C
Rationale: The independent variable is the variable that is
changed by the experimenter in an experiment. It is the factor
that the scientist intentionally manipulates to observe its effects.
4. What is a dependent variable?
A) The variable that is changed by the experimenter
B) The variable that changes because of the independent variable
, C) The variable that must be eliminated
D) The variable that remains constant
Answer: B
Rationale: The dependent variable is the variable that changes
because of the independent variable. It is the outcome or
response that is measured as a result of changes made to the
independent variable.
5. What is a control variable?
A) The variable that is changed by the experimenter
B) The variable that changes because of the independent variable
C) The variable that scientists do not wish to study that needs to
either be eliminated or kept constant
D) The variable that is always measured last
Answer: C
Rationale: A control variable is the variable that scientists do not
wish to study that needs to either be eliminated or kept constant.
These variables are kept constant to ensure that any observed
changes are due to the independent variable, not other factors.
Objective Assessment 2026 | Integrated Physical Sciences
| Exam Prep, Practice Questions, Answers & Detailed
Explanations
WHAT'S INCLUDED
• WGU C165 Integrated Physical Sciences practice
questions
• C165 Objective Assessment exam preparation
• Practice questions with answers
• Detailed explanations/rationales
, WGU C165 Objective Assessment 2026 |
Integrated Physical Sciences | Exam Prep, Practice
Questions, Answers & Detailed Explanations
1. What is a controlled experiment?
A) An experiment where scientists observe nature without
interference
B) An experiment in which a scientist intentionally changes one
quantity and observes how another quantity changes
C) An experiment conducted only in a laboratory setting
D) An experiment that uses computer simulations
Answer: B
Rationale: A controlled experiment is defined as an experiment in
which a scientist intentionally changes one quantity and observes
how another quantity changes. This distinguishes it from
observational studies where researchers do not attempt to
change the system being studied.
2. What are variables in an experiment?
A) The fixed quantities that never change
B) The changing quantities in an experiment
,C) The final results of the experiment
D) The equipment used in the experiment
Answer: B
Rationale: Variables are the changing quantities in an
experiment. They are the factors that can vary or be varied during
the course of an investigation.
3. What is an independent variable?
A) The variable that changes because of another variable
B) The variable that scientists do not wish to study
C) The variable that is changed by the experimenter in an
experiment
D) The variable that remains constant throughout the experiment
Answer: C
Rationale: The independent variable is the variable that is
changed by the experimenter in an experiment. It is the factor
that the scientist intentionally manipulates to observe its effects.
4. What is a dependent variable?
A) The variable that is changed by the experimenter
B) The variable that changes because of the independent variable
, C) The variable that must be eliminated
D) The variable that remains constant
Answer: B
Rationale: The dependent variable is the variable that changes
because of the independent variable. It is the outcome or
response that is measured as a result of changes made to the
independent variable.
5. What is a control variable?
A) The variable that is changed by the experimenter
B) The variable that changes because of the independent variable
C) The variable that scientists do not wish to study that needs to
either be eliminated or kept constant
D) The variable that is always measured last
Answer: C
Rationale: A control variable is the variable that scientists do not
wish to study that needs to either be eliminated or kept constant.
These variables are kept constant to ensure that any observed
changes are due to the independent variable, not other factors.
