Free WGU Integrated Physical Sciences (MTC1) Exam Dumps July 2026

The sequence of rock layers shown: basalt (igneous) at the bottom followed by sedimentary layers indicates a volcanic eruption followed by sediment deposition in an underwater environment.

Basalt forms from cooling lava, indicating volcanic activity.

The overlaying sedimentary rocks (sandstone, shale, limestone) are typically deposited in water environments. Reference:

Integrated Physical Sciences resources on rock layer formation and geological history.

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.

Elements in the same group (column) of the periodic table have similar chemical properties because they have the same number of valence electrons. Phosphorus (P) is in the same group as nitrogen (N), Group 15, and thus has similar chemical properties. In comparison:

Neon (Ne) is a noble gas in Group 18.

Silicon (Si) is in Group 14.

Boron (B) is in Group 13.

Integrated Physical Sciences Learning Resources, Chapter on the Periodic Table

Jupiter, the largest planet in our solar system, has played a crucial role in protecting Earth from comets. Its massive gravitational field acts as a shield, deflecting or capturing many comets and asteroids that might otherwise collide with Earth. This gravitational influence reduces the frequency of potentially catastrophic impacts on our planet. Reference:

NASA's Planetary Science Division

'The Role of Jupiter in the Formation and Evolution of the Solar System' - Research Publications

1. **Wave Speeds**: The speed of different types of waves varies significantly. 2. **Gamma Waves**: These are electromagnetic waves that travel at the speed of light (approximately \( 3 \times 10^8 \) m/s). 3. **Radio Waves**: Another type of electromagnetic wave, also traveling at the speed of light. 4. **Visible Light Waves**: These are also electromagnetic waves traveling at the speed of light. 5. **Sound Waves**: Travel much slower compared to electromagnetic waves, with typical speeds in air around 343 m/s. 6. **Conclusion**: Among the given options, sound waves travel the slowest. **Reference**: - Wave Speed Comparisons: Differences in propagation speeds of sound and electromagnetic waves.

Kepler's discovery that planets move in elliptical paths around the sun is an example of a scientific law. A scientific law describes a relationship in nature that has been consistently observed to be true. Kepler's laws of planetary motion describe the predictable patterns of planetary orbits, which have been repeatedly confirmed through observation. Reference:

Integrated Physical Sciences, Chapter 4: Scientific Laws and Theories