Integrated-Physical-Sciences WGU Integrated Physical Sciences (MTC1) Questions and Answers

The weather change from cool and clear in the morning to light rain and fog in the afternoon, followed by warmer and clear conditions the next morning, is indicative of a warm front passing through the area. A warm front occurs when a warm air mass moves over a cold air mass, causing the warm air to rise and condense, leading to precipitation. After the front passes, the area experiences warmer temperatures and clearing skies.

References:

Integrated Physical Sciences resources on weather fronts and their effects.

Meteorological studies on the impact of warm fronts on local weather patterns.

To determine which graph correctly represents the mass versus acceleration of objects with different masses pulled by the same net force, we must apply Newton's Second Law of Motion. Newton's Second Law states: \[ F = m \cdot a \] where \( F \) is the net force, \( m \) is the mass, and \( a \) is the acceleration. If we rearrange this equation to solve for acceleration, we get: \[ a = \frac{F}{m} \] This shows that acceleration is inversely proportional to mass when the net force is constant. Therefore, as mass increases, acceleration decreases, and this relationship is not linear but rather a hyperbolic curve. Let's analyze each graph: - **Graph A:** Shows a linear relationship between mass and acceleration, which contradicts the inverse relationship dictated by Newton's Second Law. - **Graph B:** Shows a curve where acceleration increases with mass, which again contradicts the expected inverse relationship. - **Graph C:** Shows a constant mass for all acceleration values, which is not applicable in this context. - **Graph D:** Shows a hyperbolic relationship, where acceleration decreases as mass increases, which is consistent with the equation \( a = \frac{F}{m} \). Thus, **Graph D** correctly represents the mass versus acceleration for objects pulled by the same net force, demonstrating the inverse relationship between mass and acceleration. **References:** - Newton's Second Law of Motion, Integrated Physical Sciences Learning Resources

When an electron is transferred from one atom to another, an ionic bond is formed. This type of bond occurs between a metal and a non-metal where one atom donates an electron to another, resulting in the formation of positive and negative ions that attract each other. In comparison:

Covalent bonds involve the sharing of electrons between atoms.

Elemental bonds is not a standard term in chemistry.

Metallic bonds involve the sharing of free electrons among a lattice of metal atoms.

References:

Integrated Physical Sciences Learning Resources, Chapter on Chemical Bonds

Iceland is located on the Mid-Atlantic Ridge, where the North American and Eurasian tectonic plates are diverging. This divergent plate boundary is characterized by the formation of new crust as magma rises from below the Earth's surface, leading to frequent volcanic activity. Additionally, as the plates move apart, the stress can cause significant seismic activity, resulting in earthquakes. Therefore, Iceland experiences both high volcanic and earthquake activity due to its tectonic setting.

References:

Integrated Physical Sciences documents on plate tectonics and natural hazards.

Geological studies on the Mid-Atlantic Ridge and Iceland's tectonic activity.

GPS technology: Satellites in the Global Positioning System (GPS) communicate with GPS receivers on Earth using electromagnetic waves.

Microwaves: Microwaves are used in GPS technology because they can travel long distances and penetrate the atmosphere with minimal interference.

Conclusion: The type of electromagnetic radiation used to send information from GPS satellites to receivers on Earth is microwaves.

References: Integrated Physical Sciences references on GPS technology, properties and applications of microwaves.

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.

References:

Integrated Physical Sciences Learning Resources, Chapter on the Periodic Table