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
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.
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!
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???