Earthquakes

An earthquake is

• The movement of magma in the crust.

• The sudden vibration of the earth's crust.

• The wearing away of crustal rock.

• Folding of rock by compression

Earthquakes occur

• When pressure is released along a plate margin that has been under stress.

• When magma rise up through the earth surface.

• When steam is forced into rock to extract oil in fracking.

• All of the above.

Most of the worlds earthquakes occur

• Along the Mid-Atlantic Ridge

• Pacific ring of fire

• The Alpide Belt

• Plantain Garden Faultline

The instrument used to record seismic shocks

• Seismograph

• Barometer

• Thermometer

• Shake meter

Earthquakes are measured based on thier

• Velocity

• Power

• Magnitude

• Height

The point where the earthquake originates is called

• The Epicenter

• The Fault line

• The Wave front

• The Focus

The point on the surface above the place the earthquake originated is

• The Fault line

• The Epicenter

• The Focus

• The Wave fronts

Most earthquakes occur along

• Divergent boundaries

• Convergent Boundaries

• Constructive margins

• Transform boundaries

The strongest earthquakes ever recorded occurred along

• Transform faults

• Subduction zones

• Collision Zones

• Seafloor spreading zones

Earthquake waves that through the earth interior are called

• Body waves

• Ocean waves

• Surface waves

• Sound waves