WGU C165 Integrated Physical Sciences Ultimate OA Study
Guide 2026-2028 | 130+ Verified Practice Questions &
Detailed Rationales | Mastery of Physics, Chemistry, Earth
& Space Science | Guaranteed Pass Bundle
Here is a high-yield Actual questions for WGU C165: Integrated Physical Sciences.
These cover the four major domains: Physics, Chemistry, Earth Science, and Space
Science. the Objective Assessment (OA).
Batch 1 (Questions 1–35) focusing on the Nature of Science and Physics.
1. A student is conducting an experiment to see how the temperature of water
affects the speed at which sugar dissolves in a beaker.
A) The amount of sugar
B) The temperature of the water
C) The speed of dissolving
D) The size of the beaker
Answer: B) The temperature of the water
Explanation: The independent variable is the factor that the researcher
deliberately changes to observe its effect on the dependent variable.
2. Which of the following best describes a scientific "Law" compared to a
scientific "Theory" in the context of physical sciences?
A) A law explains why something happens, while a theory describes what
happens.
B) A law is a proven fact, while a theory is just a guess that has not been tested.
C) A law describes a mathematical relationship or pattern in nature, while a
theory provides an explanation for how or why it happens.
D) A law can never be changed, but a theory is updated every year.
Answer: C) A law describes a mathematical relationship or pattern in nature,
while a theory provides an explanation for how or why it happens.
,Explanation: Newton's Laws describe the pattern of motion, while the Theory of
Relativity explains the underlying mechanics of space-time.
3. An object is moving at a constant speed in a straight line when a net force of
zero is applied to it according to Newton’s First Law.
A) The object will immediately come to a stop.
B) The object will begin to accelerate in the direction of the force.
C) The object will continue to move at the same speed and in the same direction.
D) The object will slow down gradually due to its own mass.
Answer: C) The object will continue to move at the same speed and in the same
direction.
Explanation: Inertia is the tendency of an object to resist changes in its state of
motion unless acted upon by an unbalanced force.
4. A heavy bowling ball and a light tennis ball are dropped from the same height
in a vacuum where there is no air resistance.
A) The bowling ball hits the ground first because it has more mass.
B) The tennis ball hits the ground first because it is easier for gravity to pull.
C) They both hit the ground at the same time because gravity accelerates all
objects at the same rate.
D) Neither will hit the ground because they are in a vacuum.
Answer: C) They both hit the ground at the same time because gravity
accelerates all objects at the same rate.
Explanation: In the absence of air resistance, gravity accelerates all objects at
approximately 9.8 m/s² regardless of their mass.
5. A person pushes against a heavy brick wall with 500 Newtons of force, but
the wall does not move at all during the interaction.
A) Work was done because the person used a lot of effort and energy.
B) No work was done because there was no displacement of the object in the
direction of the force.
C) Work was done because the person’s muscles were contracting.
D) Negative work was done because the wall pushed back on the person.
Answer: B) No work was done because there was no displacement of the object
in the direction of the force.
,Explanation: Scientific "work" is defined as Force multiplied by Displacement
(W=Fd). If distance is zero, work is zero.
6. Which form of energy is possessed by a roller coaster car as it sits at the very
top of the highest hill before it begins to descend?
A) Kinetic energy
B) Chemical energy
C) Gravitational potential energy
D) Thermal energy
Answer: C) Gravitational potential energy
Explanation: Potential energy is "stored" energy based on an object's position or
height relative to the ground.
7. As a roller coaster car moves down a hill, the Law of Conservation of Energy
states that the total energy of the system will:
A) Increase as the car gets faster.
B) Decrease as friction slows the car down.
C) Remain constant as potential energy is converted into kinetic energy and heat.
D) Disappear entirely once the car reaches the bottom.
Answer: C) Remain constant as potential energy is converted into kinetic energy
and heat.
Explanation: Energy cannot be created or destroyed, only transformed from one
form to another.
8. Which type of heat transfer occurs when you touch a hot metal spoon that
has been sitting in a bowl of boiling soup?
A) Convection
B) Radiation
C) Conduction
D) Evaporation
Answer: C) Conduction
Explanation: Conduction is the transfer of heat through direct contact between
solids.
9. When a ceiling fan circulates warm air downward and cool air upward in a
room, the heat is being transferred primarily through which process?
A) Conduction
, ) Convection
C) Radiation
D) Insulation
Answer: B) Convection
Explanation: Convection is the transfer of heat through the movement of fluids
(liquids or gases).
10. You feel the warmth of the Sun on your face even though there is millions of
miles of empty space between the Earth and the Sun.
A) Conduction
B) Convection
C) Radiation
D) Friction
Answer: C) Radiation
Explanation: Radiation is the only form of heat transfer that can travel through a
vacuum via electromagnetic waves.
11. A wave that requires a physical medium, such as air or water, to travel
through is known as which of the following?
A) Electromagnetic wave
B) Mechanical wave
C) Gamma wave
D) Radio wave
Answer: B) Mechanical wave
Explanation: Sound waves are mechanical and cannot travel through the vacuum
of space because there are no particles to vibrate.
12. Which property of a sound wave determines the "pitch" that a human ear
perceives, such as a high note versus a low note?
A) Amplitude
B) Speed
C) Frequency
D) Intensity
Answer: C) Frequency
Explanation: High frequency results in high pitch; high amplitude results in high
volume (loudness).
Guide 2026-2028 | 130+ Verified Practice Questions &
Detailed Rationales | Mastery of Physics, Chemistry, Earth
& Space Science | Guaranteed Pass Bundle
Here is a high-yield Actual questions for WGU C165: Integrated Physical Sciences.
These cover the four major domains: Physics, Chemistry, Earth Science, and Space
Science. the Objective Assessment (OA).
Batch 1 (Questions 1–35) focusing on the Nature of Science and Physics.
1. A student is conducting an experiment to see how the temperature of water
affects the speed at which sugar dissolves in a beaker.
A) The amount of sugar
B) The temperature of the water
C) The speed of dissolving
D) The size of the beaker
Answer: B) The temperature of the water
Explanation: The independent variable is the factor that the researcher
deliberately changes to observe its effect on the dependent variable.
2. Which of the following best describes a scientific "Law" compared to a
scientific "Theory" in the context of physical sciences?
A) A law explains why something happens, while a theory describes what
happens.
B) A law is a proven fact, while a theory is just a guess that has not been tested.
C) A law describes a mathematical relationship or pattern in nature, while a
theory provides an explanation for how or why it happens.
D) A law can never be changed, but a theory is updated every year.
Answer: C) A law describes a mathematical relationship or pattern in nature,
while a theory provides an explanation for how or why it happens.
,Explanation: Newton's Laws describe the pattern of motion, while the Theory of
Relativity explains the underlying mechanics of space-time.
3. An object is moving at a constant speed in a straight line when a net force of
zero is applied to it according to Newton’s First Law.
A) The object will immediately come to a stop.
B) The object will begin to accelerate in the direction of the force.
C) The object will continue to move at the same speed and in the same direction.
D) The object will slow down gradually due to its own mass.
Answer: C) The object will continue to move at the same speed and in the same
direction.
Explanation: Inertia is the tendency of an object to resist changes in its state of
motion unless acted upon by an unbalanced force.
4. A heavy bowling ball and a light tennis ball are dropped from the same height
in a vacuum where there is no air resistance.
A) The bowling ball hits the ground first because it has more mass.
B) The tennis ball hits the ground first because it is easier for gravity to pull.
C) They both hit the ground at the same time because gravity accelerates all
objects at the same rate.
D) Neither will hit the ground because they are in a vacuum.
Answer: C) They both hit the ground at the same time because gravity
accelerates all objects at the same rate.
Explanation: In the absence of air resistance, gravity accelerates all objects at
approximately 9.8 m/s² regardless of their mass.
5. A person pushes against a heavy brick wall with 500 Newtons of force, but
the wall does not move at all during the interaction.
A) Work was done because the person used a lot of effort and energy.
B) No work was done because there was no displacement of the object in the
direction of the force.
C) Work was done because the person’s muscles were contracting.
D) Negative work was done because the wall pushed back on the person.
Answer: B) No work was done because there was no displacement of the object
in the direction of the force.
,Explanation: Scientific "work" is defined as Force multiplied by Displacement
(W=Fd). If distance is zero, work is zero.
6. Which form of energy is possessed by a roller coaster car as it sits at the very
top of the highest hill before it begins to descend?
A) Kinetic energy
B) Chemical energy
C) Gravitational potential energy
D) Thermal energy
Answer: C) Gravitational potential energy
Explanation: Potential energy is "stored" energy based on an object's position or
height relative to the ground.
7. As a roller coaster car moves down a hill, the Law of Conservation of Energy
states that the total energy of the system will:
A) Increase as the car gets faster.
B) Decrease as friction slows the car down.
C) Remain constant as potential energy is converted into kinetic energy and heat.
D) Disappear entirely once the car reaches the bottom.
Answer: C) Remain constant as potential energy is converted into kinetic energy
and heat.
Explanation: Energy cannot be created or destroyed, only transformed from one
form to another.
8. Which type of heat transfer occurs when you touch a hot metal spoon that
has been sitting in a bowl of boiling soup?
A) Convection
B) Radiation
C) Conduction
D) Evaporation
Answer: C) Conduction
Explanation: Conduction is the transfer of heat through direct contact between
solids.
9. When a ceiling fan circulates warm air downward and cool air upward in a
room, the heat is being transferred primarily through which process?
A) Conduction
, ) Convection
C) Radiation
D) Insulation
Answer: B) Convection
Explanation: Convection is the transfer of heat through the movement of fluids
(liquids or gases).
10. You feel the warmth of the Sun on your face even though there is millions of
miles of empty space between the Earth and the Sun.
A) Conduction
B) Convection
C) Radiation
D) Friction
Answer: C) Radiation
Explanation: Radiation is the only form of heat transfer that can travel through a
vacuum via electromagnetic waves.
11. A wave that requires a physical medium, such as air or water, to travel
through is known as which of the following?
A) Electromagnetic wave
B) Mechanical wave
C) Gamma wave
D) Radio wave
Answer: B) Mechanical wave
Explanation: Sound waves are mechanical and cannot travel through the vacuum
of space because there are no particles to vibrate.
12. Which property of a sound wave determines the "pitch" that a human ear
perceives, such as a high note versus a low note?
A) Amplitude
B) Speed
C) Frequency
D) Intensity
Answer: C) Frequency
Explanation: High frequency results in high pitch; high amplitude results in high
volume (loudness).
