## Does a seismograph Measure P and S waves?

Each seismograph records the times when the first (P waves) and second (S waves) seismic waves arrive. From that information, scientists can determine how fast the waves are traveling.

## How are P waves and S waves measured?

Finding the Distance to the Epicenter Measure the distance between the first P wave and the first S wave. In this case, the first P and S waves are 24 seconds apart. Find the point for 24 seconds on the left side of the chart of simplified S and P travel time curves and mark that point.

What is a seismometer What are P waves and S waves?

Because P waves are the fastest seismic waves, they will usually be the first ones that your seismograph records. The next set of seismic waves on your seismogram will be the S waves. The surface waves (Love and Rayleigh waves) are the other, often larger, waves marked on the seismogram.

What instrument measures P and S waves?

seismometer
What is a seismograph. A seismograph, or seismometer, is an instrument used to detect and record seismic waves.

### What are the 4 types of seismic waves?

Seismic Wave Motions—4 waves animated

• Body Waves – Primary (P) & Secondary (S) Waves.
• Surface Waves – Rayleigh & Love Waves.

### What can you say about the P waves and S waves in the illustration?

S waves travel by particles trying to slide past each other similar to when one shakes a rope up and down or from side to side. P waves can travel through solid and fluid materials, S waves can only travel through solids. P waves travel faster than S waves.

What is the formula for the Richter scale?

A better measure of the size of an earthquake is the amount of energy released by the earthquake, which is related to the Richter Scale by the following equation: Log E = 11.8 + 1.5 M (where Log refers to the logarithm to the base 10, E is the energy released in ergs and M the Richter magnitude).

What is the difference between S-wave and P-wave?

Body waves are the waves that can travel through the layers of the earth….Difference between s waves and p waves.

P waves S waves
The first wave to hit seismographs Second waves to hit seismographs
They are compression waves They are shear waves
Can move through solids and liquids Can only move through solids

## Why do P waves come first?

The direct P wave arrives first because its path is through the higher speed, dense rocks deeper in the earth. The PP (one bounce) and PPP (two bounces) waves travel more slowly than the direct P because they pass through shallower, lower velocity rocks. The different S waves arrive after the P waves.

## Which travel faster P waves or S waves?

P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.

Are P waves faster than S waves?

P waves travel faster than S waves, and are the first waves recorded by a seismograph in the event of a disturbance. P waves travel at speeds between 1 and 14 km per second, while S waves travel significantly slower, between 1 and 8 km per second. The S waves are the second wave to reach a seismic station measuring a disturbance.

What is the speed of P and S waves?

P waves travel at speeds between 1 and 14 km per second, while S waves travel significantly slower, between 1 and 8 km per second.

### What is P and S wave?

S waves and P waves are the two types of seismic waves produced by all earthquakes. P waves are primary waves because they arrive at seismic reporting stations first. These shear waves are secondary waves because they travel at slightly slower speeds and are the second set of seismic waves recorded on seismographs.

Does a seismograph Measure P and S waves? Each seismograph records the times when the first (P waves) and second (S waves) seismic waves arrive. From that information, scientists can determine how fast the waves are traveling. How are P waves and S waves measured? Finding the Distance to the Epicenter Measure the distance between…