what is an earthquake?

what is a epicentre?

what is focus?

what are hotspots?

what is lava?

what are primary waves? (P-waves)

what is pyroclastic flow?

what is secondary waves? (S-waves)

what is seismic waves?

what is a seismometer?

what is a surface wave?

what is a tsunami?

what is an volcano?

what are the types of volcano eruptions?

what colour dose the lava change?

where do volcanos form?

what causes an earthquake?

what is used to detect earthquakes?

what are the 3 types of waves?

where do earthquakes occur?