WGU C165 INTEGRATED PHYSICAL SCIENCES EXAM – QUESTIONS AND ANSWERS | VERIFIED
AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM
UPDATE
Core Domains:
- Scientific Inquiry and the Physical World
- Force, Motion, and Energy
- The Structure and Properties of Matter
- Chemical Reactions and Bonding
- Energy Transfer and Thermodynamics
- Waves, Light, and Sound
- Electricity and Magnetism
- Earth's Systems and Geoscience
- The Hydrosphere and Atmosphere
- Astronomy and the Universe
Introduction
This comprehensive assessment is designed to evaluate a candidate's mastery of the foundational
principles that govern the physical universe, encompassing physics, chemistry, and Earth and space
sciences. The exam measures the ability to apply the scientific method, analyze systems and
interactions, and solve problems related to matter, energy, and forces. It tests both theoretical
knowledge and practical skills in interpreting data, evaluating models, and understanding the
dynamic processes that shape our planet and the cosmos. The structure includes multiple-choice and
scenario-based questions that require critical thinking and the application of scientific concepts to
real-world situations, preparing students for professional decision-making in a variety of scientific and
technical fields.
SECTION ONE: QUESTIONS 1 – 100
1. A student measures the mass of a metal cube as 27.0 g and its volume as 10.0 cm³. What is the
density of the cube in g/cm³?
A. 0.37 g/cm³
B. 2.70 g/cm³
C. 37.0 g/cm³
D. 270.0 g/cm³
🟢B
🔴 Explanation: Density is calculated by dividing mass by volume (D = m/V). 27.0 g / 10.0 cm³ =
2.70 g/cm³. This is a direct application of a foundational formula.
2. Which of the following is a scalar quantity?
A. Velocity
B. Acceleration
C. Force
D. Speed
🟢D
🔴 Explanation: Scalar quantities are described by magnitude alone. Speed is a scalar, while
velocity, acceleration, and force are vector quantities that also require a direction.
3. In a controlled experiment, what is the purpose of a control group?
A. To receive the experimental treatment
,B. To provide a baseline for comparison
C. To determine the dependent variable
D. To ensure the experiment is double-blind
🟢B
🔴 Explanation: A control group is not subjected to the independent variable. It provides a
standard against which the results of the experimental group can be compared to determine the
effect of the treatment.
4. According to Newton's First Law of Motion, an object at rest will remain at rest unless acted
upon by what?
A. A balanced force
B. An unbalanced force
C. A gravitational field
D. Inertia
🟢B
🔴 Explanation: Newton's First Law states that an object will maintain its state of motion (rest or
constant velocity) unless acted upon by a net external, unbalanced force.
5. Which type of chemical bond involves the sharing of electron pairs between atoms?
A. Ionic bond
B. Metallic bond
C. Covalent bond
D. Hydrogen bond
🟢C
🔴 Explanation: A covalent bond is formed when two nonmetal atoms share one or more pairs of
electrons to achieve a stable electron configuration.
6. A geologist discovers a rock layer containing fossils of marine organisms. This is most likely
which type of rock?
A. Igneous
B. Sedimentary
C. Metamorphic
D. Volcanic
🟢B
🔴 Explanation: Sedimentary rocks are formed from the accumulation and compaction of
sediments. They often contain fossils, which are the preserved remains of organisms that were
buried in the sediments.
7. Which of the following is a correct unit for work in the SI system?
A. Watt
B. Newton
C. Joule
D. Pascal
🟢C
🔴 Explanation: Work is defined as force times distance. The SI unit for work is the joule (J), which is
equivalent to a newton-meter (N·m).
8. As a researcher observes a chemical reaction, they note that the solution's temperature
increases significantly. This reaction is best described as:
A. Endothermic
B. Exothermic
, C. Endergonic
D. Thermogenic
🟢B
🔴 Explanation: An exothermic reaction releases energy into its surroundings, often in the form of
heat, which causes the temperature of the solution to rise. Endothermic reactions absorb heat,
causing a temperature decrease.
9. In the context of Earth's layers, the lithosphere is composed of the:
A. Crust and upper mantle
B. Asthenosphere and mesosphere
C. Inner and outer core
D. Entire mantle
🟢A
🔴 Explanation: The lithosphere is the rigid, outermost layer of Earth. It is composed of the crust
and the uppermost part of the mantle. It is broken into tectonic plates.
10. Which wave characteristic is defined as the distance between two consecutive crests or
troughs?
A. Frequency
B. Amplitude
C. Wavelength
D. Period
🟢C
🔴 Explanation: Wavelength is the spatial distance between successive points of a wave that are in
phase, such as from crest to crest or trough to trough.
11. A physician suspects a patient has developed a condition due to exposure to a heavy metal.
To ensure ethical compliance, what is the most appropriate initial step the researcher should take
before proceeding with treatment?
A. Immediately start treatment to prevent further harm.
B. Publish the findings without patient consent.
C. Obtain informed consent from the patient.
D. Conceal the potential side effects of the proposed treatment.
🟢C
🔴 Explanation: The principle of autonomy and legal requirements mandate that a patient must
provide informed consent before any treatment, especially in a research context. This ensures the
patient understands the risks, benefits, and alternatives.
12. Which of the following is a properly balanced chemical equation for the reaction between
hydrogen and oxygen to form water?
A. H₂ + O → H₂O
B. H₂ + O₂ → H₂O
C. 2H₂ + O₂ → 2H₂O
D. H₂ + 2O₂ → H₂O₂
🟢C
🔴 Explanation: The law of conservation of mass requires the number of atoms of each element to
be the same on both sides of the equation. In option C, there are 4 hydrogen atoms and 2 oxygen
atoms on both the reactant and product sides.
13. What force is responsible for holding the planets in orbit around the Sun?
A. Nuclear force
AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM
UPDATE
Core Domains:
- Scientific Inquiry and the Physical World
- Force, Motion, and Energy
- The Structure and Properties of Matter
- Chemical Reactions and Bonding
- Energy Transfer and Thermodynamics
- Waves, Light, and Sound
- Electricity and Magnetism
- Earth's Systems and Geoscience
- The Hydrosphere and Atmosphere
- Astronomy and the Universe
Introduction
This comprehensive assessment is designed to evaluate a candidate's mastery of the foundational
principles that govern the physical universe, encompassing physics, chemistry, and Earth and space
sciences. The exam measures the ability to apply the scientific method, analyze systems and
interactions, and solve problems related to matter, energy, and forces. It tests both theoretical
knowledge and practical skills in interpreting data, evaluating models, and understanding the
dynamic processes that shape our planet and the cosmos. The structure includes multiple-choice and
scenario-based questions that require critical thinking and the application of scientific concepts to
real-world situations, preparing students for professional decision-making in a variety of scientific and
technical fields.
SECTION ONE: QUESTIONS 1 – 100
1. A student measures the mass of a metal cube as 27.0 g and its volume as 10.0 cm³. What is the
density of the cube in g/cm³?
A. 0.37 g/cm³
B. 2.70 g/cm³
C. 37.0 g/cm³
D. 270.0 g/cm³
🟢B
🔴 Explanation: Density is calculated by dividing mass by volume (D = m/V). 27.0 g / 10.0 cm³ =
2.70 g/cm³. This is a direct application of a foundational formula.
2. Which of the following is a scalar quantity?
A. Velocity
B. Acceleration
C. Force
D. Speed
🟢D
🔴 Explanation: Scalar quantities are described by magnitude alone. Speed is a scalar, while
velocity, acceleration, and force are vector quantities that also require a direction.
3. In a controlled experiment, what is the purpose of a control group?
A. To receive the experimental treatment
,B. To provide a baseline for comparison
C. To determine the dependent variable
D. To ensure the experiment is double-blind
🟢B
🔴 Explanation: A control group is not subjected to the independent variable. It provides a
standard against which the results of the experimental group can be compared to determine the
effect of the treatment.
4. According to Newton's First Law of Motion, an object at rest will remain at rest unless acted
upon by what?
A. A balanced force
B. An unbalanced force
C. A gravitational field
D. Inertia
🟢B
🔴 Explanation: Newton's First Law states that an object will maintain its state of motion (rest or
constant velocity) unless acted upon by a net external, unbalanced force.
5. Which type of chemical bond involves the sharing of electron pairs between atoms?
A. Ionic bond
B. Metallic bond
C. Covalent bond
D. Hydrogen bond
🟢C
🔴 Explanation: A covalent bond is formed when two nonmetal atoms share one or more pairs of
electrons to achieve a stable electron configuration.
6. A geologist discovers a rock layer containing fossils of marine organisms. This is most likely
which type of rock?
A. Igneous
B. Sedimentary
C. Metamorphic
D. Volcanic
🟢B
🔴 Explanation: Sedimentary rocks are formed from the accumulation and compaction of
sediments. They often contain fossils, which are the preserved remains of organisms that were
buried in the sediments.
7. Which of the following is a correct unit for work in the SI system?
A. Watt
B. Newton
C. Joule
D. Pascal
🟢C
🔴 Explanation: Work is defined as force times distance. The SI unit for work is the joule (J), which is
equivalent to a newton-meter (N·m).
8. As a researcher observes a chemical reaction, they note that the solution's temperature
increases significantly. This reaction is best described as:
A. Endothermic
B. Exothermic
, C. Endergonic
D. Thermogenic
🟢B
🔴 Explanation: An exothermic reaction releases energy into its surroundings, often in the form of
heat, which causes the temperature of the solution to rise. Endothermic reactions absorb heat,
causing a temperature decrease.
9. In the context of Earth's layers, the lithosphere is composed of the:
A. Crust and upper mantle
B. Asthenosphere and mesosphere
C. Inner and outer core
D. Entire mantle
🟢A
🔴 Explanation: The lithosphere is the rigid, outermost layer of Earth. It is composed of the crust
and the uppermost part of the mantle. It is broken into tectonic plates.
10. Which wave characteristic is defined as the distance between two consecutive crests or
troughs?
A. Frequency
B. Amplitude
C. Wavelength
D. Period
🟢C
🔴 Explanation: Wavelength is the spatial distance between successive points of a wave that are in
phase, such as from crest to crest or trough to trough.
11. A physician suspects a patient has developed a condition due to exposure to a heavy metal.
To ensure ethical compliance, what is the most appropriate initial step the researcher should take
before proceeding with treatment?
A. Immediately start treatment to prevent further harm.
B. Publish the findings without patient consent.
C. Obtain informed consent from the patient.
D. Conceal the potential side effects of the proposed treatment.
🟢C
🔴 Explanation: The principle of autonomy and legal requirements mandate that a patient must
provide informed consent before any treatment, especially in a research context. This ensures the
patient understands the risks, benefits, and alternatives.
12. Which of the following is a properly balanced chemical equation for the reaction between
hydrogen and oxygen to form water?
A. H₂ + O → H₂O
B. H₂ + O₂ → H₂O
C. 2H₂ + O₂ → 2H₂O
D. H₂ + 2O₂ → H₂O₂
🟢C
🔴 Explanation: The law of conservation of mass requires the number of atoms of each element to
be the same on both sides of the equation. In option C, there are 4 hydrogen atoms and 2 oxygen
atoms on both the reactant and product sides.
13. What force is responsible for holding the planets in orbit around the Sun?
A. Nuclear force
