Intra-plate Earthquakes & Volcanoes

Question 1

Intra-plate earthquakes
These can occur

Answer 1

anywhere

Question 2

The cause is not fully understood but is thought to be:

Answer 2

Tectonic stresses causing ancient fault lines to reactivate

The plates are moving over a spherical surface and this causes zones of weakness

Question 3

Earthquakes caused by intra-plates

Answer 3

2011 Virginia earthquake