Question

PLEASE HELP

1.What did you observe happened when a P-wave traveled from a solid to a liquid?



2.What did you observe happened when an S-wave traveled into a liquid?



3.In your own words, describe how a primary wave moves.



4.In your own words, describe how a secondary wave moves.



5.How do earthquakes help us learn about the interior of the Earth?

Answer 1

1- It depends on the incident angle at which the P-wave hits the liquid. Using snells law, a portion of the energy is converted to an S-Wave, a portion of it ir reflected, but the majority of the energy just disappears ( it is absorbed into the liquid ) since P-waves do not travel through liquids.

2- it spreads out making the sound travel faster than it does in air

3- P-waves move up and down

4- S-waves move side to side


5- P-waves are pressure waves, or longitudinal waves. The motion is in the direction of the wave. These waves travel through solids and liquids.

S-waves are shear waves, or shaking waves. The motion is perpendicular to the wave direction. These waves cannot travel through liquids.

An earthquake produces both P and S waves and by monitoring the arrival (or non-arrival) of P and/or S waves around the Earth we can infer a liquid component to the core.

Answer 2

thanks

Answer 3

P-waves do travel through liquid.

Answer 4

P-waves travel through solid and liquid; S-waves travel through solids