EARTHQUAKES AND FAULTS

Faults

Are fractures or breaks in Earth’s crust.

•Compressional force

•Tensional force

•Shearing force

Types of Tectonic Forces

•Reverse Faults

•Normal Faults

•Transform Faults

Types of Faults according to Tectonic Forces

Reverse Faults

Are formed when a rock mass in the crust is pushed up relative to the other rock mass due to compressional force.

Normal Faults

contrary to reverse faults, when a tensional force acts on rocks, masses in the crust, one rock mass moves downward relative to the other forming a normal fault.

Transform Fault

is produced when a rock mass on one side of a fault slides past each other.

Earthquakes

Movement or the shifting of tectonic plates

Compressional force

Towards each other/compressed

Tensional force

Moving away from each other

Shearing force

Past or slide each other

• Fractures or breaks in the earth’s crust

• Where earthquakes starts/happen

• The stress builds up along a fault before an earthquake

What are faults?

Goes up

Reverse faults

Goes down

Normal faults

Slide or past each other

Transform faults