This is the 14042nd most frequent Spanish word.
sísmica
Related to earthquakes or seismic activity.
In this sentence, 'sísmica' is used as an adjective modifying 'actividad', to refer to phenomena related to earthquakes.
La actividad sísmica en la región ha aumentado recientemente.
Seismic activity in the region has increased recently.
Here, 'sísmicas' is used as an adjective modifying 'ondas', indicating that the waves mentioned are related to seismic activities or earthquakes.
Este dispositivo mide las ondas sísmicas generadas por movimientos tectónicos.
This device measures the seismic waves generated by tectonic movements.
In this example, 'sísmico' is employed as an adjective describing 'estudio', referring to a study conducted in the context of seismic phenomena.