i want to make a simple seismograph for my science exhibition.
How do I figure out how far away an earthquake is in meters given the velocity of the P and S waves?
Feb 01, 2010 in
Earthquake Questions
The speed of longitudinal waves, called P waves, is 8000 m/s.
Transverse waves, called S waves, travel at a slower 4500 m/s . A seismograph records the two waves from a distant earthquake.
If the S wave arrives 2.0 min after the P wave, how far away was the earthquake?
If possible, I’d like the answer as well as an explanation of how to solve the problem so that I can work back through it again myself. Thanks!
How should I go about replacing the audio system on an 04 mustang?
Jan 26, 2010 in
Earthquake Questions
I have an 04 muatang with a mach system and I want better sounding audio. No, I don’t want to drive around playing bass tracks that register on a seismograph. I just want a decent sound that is clear, not raspy or "high-pass" at any volume, and has decent AND resonable bass response. Should I just get new speakers or something else?
The distance between an earthquake epicenter and the location of a seismograph can be calculated because?
Jan 16, 2010 in
Earthquake Questions
10
The distance between an earthquake epicenter and the location of a seismograph can be calculated because
1. seismographs are sensitive to directions
2. earthquake waves decay at known rates
3. shear waves will not pass through liquids
4. shear waves and compression waves travel at different speeds
I don’t want to spend a lot, well actually I wouldn’t really want to spend anything since its only a minor assignment but I really want to know how I can make a richter scale or even a seismograph. Thank you (:
When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 9.0 km/s and the secondary, or S, wave has a speed of about 4.5 km/s. A seismograph, located some distance away, records the arrival of the P wave and then, 140 s later, records the arrival of the S wave. Assuming that the waves travel in a straight line, how far is the seismograph from the earthquake?
_____m
When an earthquake occurs…?
Sep 04, 2009 in
Earthquake Questions
When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 8.0 km/s and the secondary, or S, wave has a speed of about 4.5 km/s. A seismograph, located some distance away, records the arrival of the P wave and then, 78 s later, records the arrival of the S wave. Assuming that the waves travel in a straight line, how far is the seismograph from the earthquake?
The answer for this problem is 8.8 X 10^5 m. I can’t seem to get this answer… can you tell me how you did it if you know how to do it? Thanks!
Whats the relationship motion on a seismograph, versus true motion of the ground where the seismograph is loca?
Aug 21, 2009 in
Earthquake Questions
(Earthquakes question). What is the relationship of the motion on a seismograph versus the true motion of the ground where the seismograph is located?
How could someone predict the approximate location of an epicenter without a seismograph?
Aug 21, 2009 in
Earthquake Questions
How could someone predict the approximate location of an epicenter without a seismograph??
I had a bookmark to a real time seismograph for Southern California but I have lost it, I have searched but nothing so far.
Yes I felt that one too. Thanks to both of you for the links but the one I had was a link to the actual seismograph in real time. It was linked by a local tv station, however I guess it has been removed.
The second answer is pretty close to what I had…thank you so much.
I have 3 more questions that I need help on?
Aug 10, 2009 in
Earthquake Questions
A) When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 8.00 km/ s and the secondary, or S, wave has a speed of about 5.22 km/ s. A seismograph, located some distance away, records the arrival of the P wave and then, 82.5 s later, records the arrival of the S wave. Assuming that the waves travel in a straight line, how far is the seismograph from the earthquake?
B)The volume control on a stereo amplifier is adjusted so the sound intensity level increases from 28.7 to 56.9 dB. What is the ratio of the final sound intensity to the original sound intensity?
C)Asource is generating circular waves on the surface of a lake. The waves have a wavelength of 12.0 m and travel outward at a speed of 6.67 m/s. You are in a boat whose speed is 4.09 m/s and heading directly toward the source of the waves. What do you observe for the frequency of the waves?
what is Doppler’s Effect where you said you will observe Doppler’s effect-increase of frequency.
When an earthquake occurs…?
Jul 30, 2009 in
Earthquake Questions
When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 8.0 km/s and the secondary, or S, wave has a speed of about 4.5 km/s. A seismograph, located some distance away, records the arrival of the P wave and then, 78 s later, records the arrival of the S wave. Assuming that the waves travel in a straight line, how far is the seismograph from the earthquake?
Can you tell me how you did it if you get this? Thanks!
How do scientsts use seismograph to measure the composition of the Earth?
Jul 19, 2009 in
Earthquake Questions
How do scientsts use seismograph to measure the composition of the Earth? And how do the scientists determine the composition?
i am writing a summary of our unit in science and i have seismograph and richter scale written down in my notes but i cant remember which one they use to measure the intensity of an earthquake
How do u find the coordinates of the epicenter?
Jun 30, 2009 in
Earthquake Questions
After an earthquake, you are given seismograph reading from three locations, where the coordinate units are miles
At A(2, 1), the epicenter is 5 miles away
At B(-2, -2), the epicenter is 6 miles away.
At C(-6, 4), the epicenter is 4 miles away.
a) What are the coordinates of the epicenter?
Why do most earthquakes occur in the lithosphere?And howw does a seismograph record the movements of the ground?
When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 8.0 km/s and the secondary, or S, wave has a speed of about 4.5 km/s. A seismograph, located some distance away, records the arrival of the P wave and then, 91.0 s later, records the arrival of the S wave. Assume the waves travel in a straight line.
The difference in the magnitude of measured earthquakes o the Richter Scale and curves drawn on seismographs?
Jun 05, 2009 in
Earthquake Questions
I have a homework question but I can't afford the needed book to solve this problem. Here it is:
"The difference in the magnitude of measured earthquakes on the Richter Scale i proportional to the difference in height of the curve drawn by a seismographs. For example, an earthquake of a magnitude 2 has a seismograph height 'blank' times (more or less) than an earthquake of a magnitude 3?"
I appreciate any help!
seismographs?
May 27, 2009 in
Earthquake Questions
On a seismograph machine, it makes 3 circles, and the point where the circles intersect is where the earthquake it at. How do you find the radius of the circles???
