WGU C165 OA Exam – Integrated Physical
Sciences 2025 Actual Exam with 400 Verified
Questions & Expert Answers | A+ Graded |
Latest Update
Question 1
Which discipline predicts the trajectory of a bullet fired from a gun?
A: Chemistry
B: Physics
C: Earth science
D: Astronomy
Correct Answer: B
Rationale: Physics studies motion and forces, including projectile motion for bullet trajectories,
per WGU C165 Module 1 (https://www.wgu.edu).
Question 2
An environmental scientist monitors lake pollutants. Which disciplines are involved?
A: Physics and astronomy
B: Chemistry and Earth science
C: Physics and chemistry
D: Earth science and astronomy
Correct Answer: B
Rationale: Chemistry analyzes pollutant composition; Earth science studies the lake’s
environmental context, per WGU C165 Module 4 (https://www.wgu.edu).
Question 3
What measures the amount of matter in an object?
A: Volume
B: Mass
C: Density
D: Weight
Correct Answer: B
Rationale: Mass quantifies matter, independent of gravity, per WGU C165 Module 1
(https://openstax.org).
Question 4
,What is an object’s resistance to changes in motion?
A: Friction
B: Inertia
C: Momentum
D: Acceleration
Correct Answer: B
Rationale: Inertia, per Newton’s First Law, resists motion changes, per WGU C165 Module 2
(https://openstax.org).
Question 5
What does Newton’s Second Law state?
A: Action equals opposite reaction
B: Force equals mass times acceleration
C: Objects at rest stay at rest
D: Gravity depends on mass and distance
Correct Answer: B
Rationale: Newton’s Second Law is F = ma, per WGU C165 Module 2 (https://openstax.org).
Question 6
What is the formula for work?
A: Work = mass × acceleration
B: Work = force × displacement
C: Work = energy × time
D: Work = velocity × distance
Correct Answer: B
Rationale: Work is force times displacement in the direction of the force, per WGU C165
Module 2 (https://openstax.org).
Question 7
Newton’s law of gravity, never contradicted, is a:
A: Theory
B: Law
C: Hypothesis
D: Observation
Correct Answer: B
Rationale: A scientific law describes consistent relationships, like gravity, per WGU C165
Module 1 (https://openstax.org).
Question 8
,The explanation of Earth’s crust as moving plates is a:
A: Law
B: Theory
C: Hypothesis
D: Model
Correct Answer: B
Rationale: Plate tectonics is a theory supported by evidence, per WGU C165 Module 4
(https://openstax.org).
Question 9
Which topic suits a controlled experiment?
A: Identifying atmospheric elements
B: Testing pollutant dissolution rates in water
C: Measuring star distances
D: Observing rock formations
Correct Answer: B
Rationale: Controlled experiments test variables like dissolution rates, per WGU C165 Module
1 (https://www.wgu.edu).
Question 10
A mechanical wave cannot travel through a:
A: Solid
B: Liquid
C: Vacuum
D: Gas
Correct Answer: C
Rationale: Mechanical waves require a medium, unlike electromagnetic waves, per WGU C165
Module 2 (https://openstax.org).
Question 11
What is the primary energy source for Earth’s climate?
A: Earth’s core
B: Sun
C: Moon
D: Wind
Correct Answer: B
Rationale: Solar radiation drives Earth’s climate, per WGU C165 Module 4
(https://openstax.org).
Question 12
, What accounts for most of Earth’s water?
A: Rivers
B: Lakes
C: Oceans
D: Glaciers
Correct Answer: C
Rationale: Oceans hold ~97% of Earth’s water, per WGU C165 Module 4 (https://openstax.org).
Question 13
What is groundwater?
A: Atmospheric water
B: Water in soil and rock layers
C: River water
D: Glacier water
Correct Answer: B
Rationale: Groundwater is stored in soil and rock, per WGU C165 Module 4
(https://openstax.org).
Question 14
Why does air density decrease with altitude?
A: Air particles are lighter
B: Gravity pulls particles downward
C: Air particles expand
D: Air particles evaporate
Correct Answer: B
Rationale: Gravity reduces air density at higher altitudes, per WGU C165 Module 4
(https://openstax.org).
Question 15
Nitrogen makes up what percentage of Earth’s atmosphere?
A: 21%
B: 78%
C: 1%
D: 50%
Correct Answer: B
Rationale: Nitrogen is ~78% of the atmosphere, per WGU C165 Module 4
(https://openstax.org).
Question 16
Sciences 2025 Actual Exam with 400 Verified
Questions & Expert Answers | A+ Graded |
Latest Update
Question 1
Which discipline predicts the trajectory of a bullet fired from a gun?
A: Chemistry
B: Physics
C: Earth science
D: Astronomy
Correct Answer: B
Rationale: Physics studies motion and forces, including projectile motion for bullet trajectories,
per WGU C165 Module 1 (https://www.wgu.edu).
Question 2
An environmental scientist monitors lake pollutants. Which disciplines are involved?
A: Physics and astronomy
B: Chemistry and Earth science
C: Physics and chemistry
D: Earth science and astronomy
Correct Answer: B
Rationale: Chemistry analyzes pollutant composition; Earth science studies the lake’s
environmental context, per WGU C165 Module 4 (https://www.wgu.edu).
Question 3
What measures the amount of matter in an object?
A: Volume
B: Mass
C: Density
D: Weight
Correct Answer: B
Rationale: Mass quantifies matter, independent of gravity, per WGU C165 Module 1
(https://openstax.org).
Question 4
,What is an object’s resistance to changes in motion?
A: Friction
B: Inertia
C: Momentum
D: Acceleration
Correct Answer: B
Rationale: Inertia, per Newton’s First Law, resists motion changes, per WGU C165 Module 2
(https://openstax.org).
Question 5
What does Newton’s Second Law state?
A: Action equals opposite reaction
B: Force equals mass times acceleration
C: Objects at rest stay at rest
D: Gravity depends on mass and distance
Correct Answer: B
Rationale: Newton’s Second Law is F = ma, per WGU C165 Module 2 (https://openstax.org).
Question 6
What is the formula for work?
A: Work = mass × acceleration
B: Work = force × displacement
C: Work = energy × time
D: Work = velocity × distance
Correct Answer: B
Rationale: Work is force times displacement in the direction of the force, per WGU C165
Module 2 (https://openstax.org).
Question 7
Newton’s law of gravity, never contradicted, is a:
A: Theory
B: Law
C: Hypothesis
D: Observation
Correct Answer: B
Rationale: A scientific law describes consistent relationships, like gravity, per WGU C165
Module 1 (https://openstax.org).
Question 8
,The explanation of Earth’s crust as moving plates is a:
A: Law
B: Theory
C: Hypothesis
D: Model
Correct Answer: B
Rationale: Plate tectonics is a theory supported by evidence, per WGU C165 Module 4
(https://openstax.org).
Question 9
Which topic suits a controlled experiment?
A: Identifying atmospheric elements
B: Testing pollutant dissolution rates in water
C: Measuring star distances
D: Observing rock formations
Correct Answer: B
Rationale: Controlled experiments test variables like dissolution rates, per WGU C165 Module
1 (https://www.wgu.edu).
Question 10
A mechanical wave cannot travel through a:
A: Solid
B: Liquid
C: Vacuum
D: Gas
Correct Answer: C
Rationale: Mechanical waves require a medium, unlike electromagnetic waves, per WGU C165
Module 2 (https://openstax.org).
Question 11
What is the primary energy source for Earth’s climate?
A: Earth’s core
B: Sun
C: Moon
D: Wind
Correct Answer: B
Rationale: Solar radiation drives Earth’s climate, per WGU C165 Module 4
(https://openstax.org).
Question 12
, What accounts for most of Earth’s water?
A: Rivers
B: Lakes
C: Oceans
D: Glaciers
Correct Answer: C
Rationale: Oceans hold ~97% of Earth’s water, per WGU C165 Module 4 (https://openstax.org).
Question 13
What is groundwater?
A: Atmospheric water
B: Water in soil and rock layers
C: River water
D: Glacier water
Correct Answer: B
Rationale: Groundwater is stored in soil and rock, per WGU C165 Module 4
(https://openstax.org).
Question 14
Why does air density decrease with altitude?
A: Air particles are lighter
B: Gravity pulls particles downward
C: Air particles expand
D: Air particles evaporate
Correct Answer: B
Rationale: Gravity reduces air density at higher altitudes, per WGU C165 Module 4
(https://openstax.org).
Question 15
Nitrogen makes up what percentage of Earth’s atmosphere?
A: 21%
B: 78%
C: 1%
D: 50%
Correct Answer: B
Rationale: Nitrogen is ~78% of the atmosphere, per WGU C165 Module 4
(https://openstax.org).
Question 16
