Question

What kind of data do seismometers provide for seismologists?

time of earthquake, magnitude and velocity, and type of seismic waves

track movements of magma in the Earth's mantle

when tsunamis caused by quakes will strike coastal areas

location, quantity and time of damage created by earthquake

Answer 1

Seismometers provide seismologists with valuable data including:

1. **Time of Earthquake**: They record the exact time an earthquake occurs.
2. **Magnitude**: By measuring the amplitude of seismic waves, seismometers help determine the earthquake's magnitude.
3. **Velocity and Type of Seismic Waves**: Seismometers can identify different types of seismic waves (such as P-waves and S-waves) and their speeds, which helps in understanding the earthquake’s origin and characteristics.

While seismometers can be useful for investigating other phenomena, such as tracking magma movements or providing early warnings for tsunamis, their primary function is to record the seismic activity associated with earthquakes. Therefore, the most accurate summary of the data seismometers provide for seismologists includes details about the time, magnitude, velocity, and type of seismic waves.