Admin Table of Contents
- 1 What type of earthquake wave is usually received first at a recording station 2000 km from the epicenter?
- 2 How long does it take for a primary wave to travel 2000 km?
- 3 What is the answer of the graphical record of an earthquake?
- 4 How far away from the earthquake is the receiving station answer?
- 5 Which seismic wave arrives last at a seismograph station?
- 6 What is the distance of the epicenter from the seismic station of Batangas?
What type of earthquake wave is usually received first at a recording station 2000 km from the epicenter?
P-waves
The wave record from a seismograph is known as a seismogram – see Figure 3. A typical seismogram of an earthquake has three prominent wave patterns. The first waves to arrive are the P-waves (also called “primary” or “push-pull”). They are followed by the S-waves (also called “secondary,” “shear,” or “shake”).
How long does it take for a primary wave to travel 2000 km?
Instructor’s Copy
| Wave Type | Distance traveled from epicenter (km) | Travel time |
|---|---|---|
| P | 1600 | 20 |
| P | 6500 | 50 |
| P | 5400 | 40 |
| P | 2000 | 00 |
What order to the waves arrive in the seismic station?
P waves travel the fastest, so they arrive first. S waves, which travel at about half the speed of P waves, arrive later. A seismic station close to the earthquake records P waves and S waves in quick succession.
How do you find the distance of the epicenter from the seismic station?
Measure the difference in arrival times between the first shear (s) wave and the first compressional (p) wave, which can be interpreted from the seismogram. Multiply the difference by 8.4 to estimate the distance, in kilometers, from the seismograph station to the epicenter.
What is the answer of the graphical record of an earthquake?
seismograph
The graphical output from a seismograph is called a seismogram.
How far away from the earthquake is the receiving station answer?
Crust, mantle, outer core, and inner core. Based on the Earth Science Reference Tables, approximately how far away from the receiving station is the epicenter of an earthquake if the difference in arrival times of P- and S-waves at the station is 6 minutes and 30 seconds? 5,000 km.
How long does it take for AP wave to travel 2200 km?
WAVE TRAVEL TIME AND DISTANCE TRAVELED
| P-WAVES | S-WAVES | |
|---|---|---|
| Distance (km) | Time (min.) | Distance (km) |
| 4800 | 8:00 | 2200 |
| 5700 | 9:00 | 2600 |
| 6600 | 10:00 | 3000 |
How is an earthquake located by a seismograph?
Seismologists use the difference in arrival time between P and S waves to calculate the distance between the earthquake source and the recording instrument (seismograph). Scientists need recordings from at least three seismographs to accurately locate the depth and magnitude of an earthquake.
Which seismic wave arrives last at a seismograph station?
surface 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. They travel only along the surface of the Earth. There are two types of surface waves: Love and Rayleigh waves.
What is the distance of the epicenter from the seismic station of Batangas?
Based on that record, the epicenter of the 5.5 earthquake was located 7 kilometers northwest of Tingloy, Batangas. The earthquake was of tectonic origin.
What does the seismograph record?
earthquake
Seismographs are instruments used to record the motion of the ground during an earthquake.