The correct answer is Earthquake.

• Earthquake:
  • An earthquake is a sudden shaking or trembling of the earth which lasts for a very short time.
  • It is caused by a disturbance deep inside the earth’s crust.
  • So it is difficult to predict the earthquake.
  • But for the prediction, we use remote sensing.
• Remote sensing
  • It can be used to obtain data of very remote and inaccessible regions. 
  • With the help of remote sensing imagery of any area over a continuous period through which any natural changes in the landscape (earthquake) can be analyzed.
  • The data collected using it is in various forms such as variations in acoustic wave distributions (SONAR), variations in force distributions (gravity meter), variations in electromagnetic energy distributions.
  • The remote sensing is the process of inferring surface parameters from measurements of the electromagnetic radiation (EMR) from the Earth’s surface.
  • In space-borne remote sensing, sensors are mounted on a satellite orbiting the earth.