A violin can be used, but its effectiveness is limited.
seismograph is one instrument that could measure earthquakes and volcanoes etc but seismograph is many times use at earthquake!
A compass is used to find your location in a forest
A Triple Beam Balance is used to find the mass of an object.
Graduated cylinder
Pressure gauges.
volcanoes are used for nothing
radar
yes you can find volcanoes in north America
Yes, it is not uncommon to find volcanoes at hot spots.
A triple beam balence
Graduated cylinder
It is not uncommon to find volcanoes in some deserts. The Chihuahuan Desert has a number of extinct and dormant volcanoes.