You are presented with the question "What measures the shaking of the ground" and the following answer choices: 
- Seismometer
 - sensory neurons
 - Hygrometer
 - Speedometer
 - heat energy
 - kinetic energy
 - Force gauge
 - power stations

Now knowing that an earthquake causes the ground to shake and seismometers measure earthquakes, choose the best answer.


 

 Seismometer        