Earthquakes

This stress is caused when two objects are being squeezed together

compression

Which fault is associated with compression stress?

reverse fault

Which plate boundary is associated with compressions stress?

convergent boundary

How do you locate the epicenter of an earthquake?

plot data from 3 seismic stations and where all 3 circles intersect is the epicenter.

What direction does the hanging wall move in a normal fault

Down (this picture is a normal fault)

Which type of fold is a downwards arch?

syncline

Which type of fold is an upwards arch?

anticline

What direction does the hanging wall move in a reverse fault?

Up (see picture of a reverse fault)

What is created when rocks break AND move?

faults

Which seismic wave will arrive first at a seismic station?

primary wave (P wave)

Which seismic wave will arrive second at a seismic station?

secondary wave (S wave)

Which seismic wave will arrive last at a seismic station?

surface wave

Which seismic wave will cause the most damage?

surface wave

Which seismic wave will NOT travel through liquid material?

S wave (secondary wave)

What does the Richter scale measure?

The strength of an earthquake

How many waves are produced during a tsunami?

Many waves (series of waves)

What produces a tsunami?

underwater earthquake

Where can a tsunami happen?

Along any coastline

Which fault is associated with tension stress?

normal fault

Which plate boundary is associated with tension stress?

divergent plate boundary