Question

Dr. Chang is studying seismic waves he notices that seismic waves a tight known as P waves travel faster through the mantle than other than through the outer core what can he conclude from this observation

Answer 1

The quicker movement of P waves through the mantle than the outer core suggests that the mantle is more rigid, hence allows faster transmission of these waves. This information aids in modeling the Earth's internal structure and understanding the composition and state of different earth layers.

Step-by-step explanation:

Dr. Chang's observation that P waves (Primary waves) travel faster through the mantle than through the outer core is a discovery about the physical properties of these layers of the Earth. The P waves move faster in the mantle because it is primarily composed of silicate rock which is more rigid and allows for quicker transmission of these waves. In contrast, the outer core is mostly composed of liquid iron and nickel, which is less rigid and therefore doesn't transmit P waves as quickly. This information can help in creating models of the Earth's internal structure and predicting how seismic waves will behave during an earthquake. Knowing the relative speeds of seismic waves can also provide clues to the composition and state of material in different Earth layers.

Learn more about Seismic Waves

Answer 2

Step-by-step explanation:

Seismic velocities depend on the material properties such as composition, mineral phase and packing structure, temperature, and pressure of the media through which seismic waves pass. Seismic waves travel more quickly through denser materials and therefore generally travel more quickly with depth. Anomalously hot areas slow down seismic waves. Seismic waves move more slowly through a liquid than a solid. Molten areas within the Earth slow down P waves and stop S waves because their shearing motion cannot be transmitted through a liquid. Partially