It is not really possible to give the exact occurrence of an earthquake, but it can be predicted by monitoring faults. Earthquake happens when the pressure on a fault line builds up or accumulate, when it is eventually releases, earthquake will take place. Geologist observes and measure the changes or amount of pressure in these fault lines to know if an earthquake is likely to take place.
Because it does not absorb the green wavelengths of white light.
Happy Holidays! Hope this helped!
