|
|
 |
|
|
 |
|
Seismic Measurer
|
|
The force and direction of earthquakes can be recorded on a seismograph. It has been estimated that there are 500,000 detectable seismic disturbances every year, though many are very small.
|
| |
Previous:
Back
|
Book:
Horrible but True
|
Section:
Natural World
|
Chapter:
Natural Disasters
|
|
|
|
 |
|
|
