QUICK I NEED A GOOD ANSWER POINTS!!!!! VOLCANOES?

Question

only answer if u no, what r some tools a volcanologists scientist would use.

Please no bad answers

*thanks* :}

Answer 1

seismograph: measures earthquakes: volcanologists use sensitive ones close to volcanoes to detect local activity.

Tiltmeter: very sensitive device that can detect bulging or minor collapsing of the volcano.

Survey: using GPS or traditional survey tools they track changes in topography: often a clue to pending eruptions.

Gas detectors: measure the volume and composition of gases escaping. Sudden changes of composition and volume can also precede an eruption.

Browse Wikipedia or USGS website for more info