1.)Laser beams can be used to detect plate movement.

2.)A seismometer is used to pick up the vibrations in the Earth's crust. An increase in vibrations may indicate a possible earthquake.

3.)Radon gas escapes from cracks in the Earth's crust.

Answer:

1.when the things is moving

2.Listen to radio

3.Wala na po ako maisip napag-aralan na po namin ito, search nyo nalang po sa DISASTER :)