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Get All WGU Integrated Physical Sciences (MTC1) Exam Questions with Validated Answers
| Vendor: | WGU |
|---|---|
| Exam Code: | Integrated-Physical-Sciences |
| Exam Name: | WGU Integrated Physical Sciences (MTC1) |
| Exam Questions: | 70 |
| Last Updated: | April 20, 2026 |
| Related Certifications: | WGU Courses and Certifications |
| Exam Tags: | Foundational Physical Science Students |
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A person near a campfire may feel warmth from the fire even though the heated air above the fire does not reach her.
Which part of the electromagnetic spectrum transfers most of the energy that warms her?
Heat transfer: Heat from the campfire can reach a person through radiation, conduction, and convection. In this scenario, radiation is the primary mode of heat transfer.
Infrared radiation: The warmth felt by a person near a campfire is primarily due to infrared radiation. Infrared radiation is a type of electromagnetic wave that carries heat energy.
Conclusion: Infrared radiation is the part of the electromagnetic spectrum that transfers most of the energy warming a person near a campfire.
Where is metamorphic rock found in the rock cycle?

The rock cycle diagram shows the processes that transform one type of rock into another. Metamorphic rocks are formed from pre-existing rocks (either igneous, sedimentary, or other metamorphic rocks) that are subjected to high temperatures and pressures, which cause physical and chemical changes. Point B in the diagram represents the process where rocks undergo heat and pressure to form metamorphic rocks. This transformation does not involve melting; instead, it involves recrystallization and the realignment of minerals within the rock.
Reference
Integrated Physical Sciences: The rock cycle and metamorphic rock formation.
Processes of heat and pressure in the formation of metamorphic rocks.
In which scenario does gravity cause the change in the object's motion?
Gravity is the force that accelerates a skydiver towards the ground after they jump from a plane. In this scenario, gravity causes a significant change in the motion of the skydiver, pulling them downward and increasing their velocity until air resistance balances the force of gravity. Reference:
Integrated Physical Sciences, Chapter 3: Forces and Motion
Which type of energy is generated by harnessing powerful ocean currents?
Energy generated by harnessing powerful ocean currents is known as tidal energy. Tidal energy exploits the kinetic energy of moving water, caused by tidal currents, to generate electricity. Special underwater turbines are placed in areas with strong tidal flows, converting the movement of water into electrical power. Reference:
International Renewable Energy Agency (IRENA)
'Tidal Energy: Technology Brief' - National Renewable Energy Laboratory (NREL)
In 2011, scientists reported on an experiment in which neutrinos appeared to travel faster than light. This result was remarkable because it violates Einstein's theory of special relativity, which has been a cornerstone of our understanding of physics since 1905.
What is the appropriate scientific approach for dealing with this contradiction?
*Understand the claim:** In 2011, scientists observed neutrinos that appeared to travel faster than light, which would contradict Einstein's theory of special relativity. - **Scientific principles:** Einstein's theory of special relativity has been extensively validated and is a cornerstone of modern physics. Any claim that contradicts it requires thorough investigation. - **Appropriate response:** The scientific method dictates that extraordinary claims require extraordinary evidence. The first step should be to check the experimental setup for errors or anomalies that could explain the unexpected results. - **Replication:** Independent replication of the experiment is essential to confirm or refute the findings. If other scientists can replicate the results under controlled conditions, the claim gains credibility. Otherwise, the initial results are likely due to experimental errors. - **Conclusion:** The best approach is to critically evaluate the experiment and attempt to replicate the results, ensuring the integrity of the scientific process. **Reference:** Peer-reviewed journals on particle physics, reports from CERN, and documentation on the principles of the scientific method.
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