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WGU Integrated Physical Sciences (C165, C908) Exam Questions
- Topic 1: Nature and Process of Science: This section of the exam measures skills of Science Students and covers the nature and process of science. Learners explore how scientific inquiry operates and the fundamental principles that guide scientific investigation. The content addresses the methods scientists use to understand the natural world and how scientific knowledge is developed, tested, and refined through systematic observation and experimentation.
- Topic 2: Physics Applications and Fundamental Concepts: This section of the exam measures skills of Physical Science Students and covers applications of physics including fundamental concepts such as forces, motion, energy, and waves. Learners examine the basic principles that govern physical phenomena in everyday life. The material focuses on understanding how forces influence motion, how energy transforms and transfers, and how waves propagate through different media, connecting these concepts to practical real world applications.
- Topic 3: Chemistry Concepts and Applications: This section of the exam measures skills of Science Students and covers key chemistry concepts including the structure of matter and the behavior and conservation of matter in chemical reactions. Learners study the fundamental properties of matter and how substances interact through chemical processes. The content addresses the organization of matter at atomic and molecular levels and how matter is conserved during chemical transformations.
- Topic 4: Earth System and Processes: This section of the exam measures skills of Earth Science Students and covers the underlying organization, interactions, and processes within the Earth system including the Earth structure and atmosphere, and Earth interactions within the solar system. Learners investigate the components that make up Earth systems and how they function together. The material focuses on understanding Earth internal structure, atmospheric processes, and how Earth relates to and interacts with other celestial bodies in the solar system.
Free WGU Integrated Physical Sciences (C165, C908) Exam Actual Questions
Note: Premium Questions for Integrated Physical Sciences (C165, C908) were last updated On Oct. 10, 2026 (see below)
In space, small particles of matter can join together to form larger particles. Those larger particles have more mass and can then attract even more particles to themselves to grow even larger. Eventually, they may form an asteroid, comet, planet, or star.
Which force allows the particles to attract more and more particles as their mass increases?
In space, particles attract each other due to the force of gravity. This attraction increases as the particles' mass increases, leading to the accumulation of more matter.
Gravity is a fundamental force that causes objects with mass to be attracted to one another. As particles gather and grow in mass, their gravitational pull becomes stronger, allowing them to attract even more particles.
This process can lead to the formation of larger celestial bodies such as asteroids, comets, planets, or stars. Reference:
Integrated Physical Sciences resources on gravitational forces and celestial body formation.
Hail falls into the ocean.
Between which two reservoirs is the hail transferred during this process?
Hail is a form of solid precipitation that originates in the atmosphere. When hail falls into the ocean, it is transferred from the atmosphere (where it formed) to the surface water reservoir (the ocean). This process is part of the hydrological cycle, which involves the movement of water between different reservoirs, including the atmosphere, surface water, ground water, and glaciers.
Integrated Physical Sciences materials on precipitation and the hydrological cycle.
Studies on the movement of water between atmospheric and surface water reservoirs.
Which layer of the atmosphere would an atmospheric scientist be investigating if the scientist were studying the formation of clouds?
The troposphere is the lowest layer of the atmosphere where weather phenomena, including cloud formation, occur.
Atmospheric scientists study cloud formation and other weather-related processes within this layer. Reference:
Integrated Physical Sciences resources on atmospheric layers and weather processes.
In 1996, NASA scientists claimed that a Martian meteor contained chemical compounds that indicated life on Mars 3.6 billion years ago. However, further studies showed that the same chemical compounds were found in rocks from the Moon, where no life ever existed.
What is the appropriate scientific approach for dealing with this contradiction?
**Identify the contradiction:** NASA scientists found chemical compounds in a Martian meteor that suggested the possibility of ancient life on Mars. However, similar compounds were also found in Moon rocks, where life is not believed to have existed. - **Analyze the evidence:** The presence of these compounds on both Mars and the Moon suggests that these compounds are not unique indicators of life. - **Scientific approach:** To resolve the contradiction, scientists must consider the broader context and properties of these compounds. The appropriate response is to recognize that the compounds alone do not provide conclusive evidence of life. This requires a cautious interpretation of the findings and a search for additional, more definitive indicators of life. - **Conclusion:** The correct approach is to understand that these chemical compounds do not necessarily indicate life, as their presence can be attributed to non-biological processes as well. **Reference:** Integrated Physical Sciences textbooks, scientific journals on astrobiology, and NASA reports on Martian and lunar geology.
A water molecule consists of two hydrogen atoms bonded to an oxygen atom.
Which type of substance is water?
Understanding Molecular Structure:
Water Molecule: Consists of two hydrogen atoms and one oxygen atom chemically bonded together.
Classification of Substances:
Element (B): A pure substance of one type of atom.
Compound (D): A substance made of two or more different elements chemically bonded.
Isotope (C): Variants of a particular chemical element with different neutron numbers.
Mixture (A): A combination of substances not chemically bonded.
Chemical Bonding in Water: The hydrogen and oxygen atoms in a water molecule are chemically bonded, forming a compound.
Conclusion: Water is a compound.
Chemical Compounds: Definitions and examples of chemical compounds.
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