# On A Typical Seismogram ________ Will Show The Highest Amplitudes

## On A Typical Seismogram ________ Will Show The Highest Amplitudes

The primary, or P, waves travel most quickly and are the first to be registered by the seismograph. Secondary, or S, waves travel more slowly. As S waves have a greater amplitude than P waves the two groups are easily distinguishable on the seismogram.

## Which seismic wave has the highest amplitude?

They are named after A.E.H. Love, a British mathematician who created a mathematical model of the waves in 1911. They usually travel slightly faster than Rayleigh waves, about 90% of the S wave velocity, and have the largest amplitude.

## What is amplitude on a seismograph?

On a seismogram, the horizontal timeline is flat until there is a ground disturbance which is recorded as a wave or seismogram. The amplitude of a seismic wave is the amount the ground moves up or down. Amplitude is one-half the distance between the crest and trough of one wavelength.

## What are P and S waves in earthquakes?

In P or compressional waves, the vibration of the rock is in the direction of propagation. 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.

## What is the amplitude of a wave?

amplitude, in physics, is the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path.

## How do you find the maximum amplitude?

Using a seismogram, the time difference between the recording of the P wave and the S wave is determined and matched to a corresponding distance value. The single maximum amplitude recorded on the seismogram is calculated and a line is drawn between the amplitude scale and the distance scale.

## What is the P wave on a seismogram?

A P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving.

## What type of waves does a seismograph detect?

A seismograph, or seismometer, is an instrument used to detect and record seismic waves. Seismic waves are propagating vibrations that carry energy from the source of an earthquake outward in all directions. They travel through the interior of the Earth and can be measured with sensitive detectors called seismographs.

## How can you tell the difference between P and S waves on a seismograph?

They are defined based on when they arrive and are felt on the surface. P waves, or primary waves, arrive first while S waves, or secondary waves, arrive second. Both waves cause the ground to shake when an earthquake occurs. S waves cause more intense shaking than P waves and are typically much more destructive.

## What are S waves known as?

An S wave, or shear wave, is a seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is moving.

## Which waves have the highest velocity?

The correct answer is Light. The speed of light in the air is 3 × 108 m/s. The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second). In theory, nothing can travel faster than light.

## What do P waves stand for?

Compressional waves are also called P-Waves, (P stands for “primary”) because they are always the first to arrive. They gave us the first jolt last Friday. Shear waves propagate more slowly through the Earth than compressional waves and arrive second, hence their name S- or secondary waves.

## Are P waves stronger than S waves?

S waves are more dangerous than P waves because they have greater amplitude and produce vertical and horizontal motion of the ground surface. The slowest waves, surface waves, arrive last.

## What does a high amplitude mean?

The amplitude of a wave is related to the amount of energy it carries. A high amplitude wave carries a large amount of energy; a low amplitude wave carries a small amount of energy.

## What is an amplitude example?

It refers to the maximum displacement from the equilibrium that an object in periodic motion shows. As an example, a pendulum swings through its equilibrium point (straight down) and then swings to a maximum distance away from the center.

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