Inside Earth 2-1 an 2-2

23 cards·by dbingham

A scale that rates earthquakes by estimating the total energy released by an earthquake

moment magnitude scale

the block of rock that forms the upper half of the fault

hanging wall

stress

a force that acts on rock to change its shape or volume

earthquake

the shaking that results from the movement of rock beneath Earth's surface

a type of fault in which rocks on either side move past each other sideways with little up or down motion

strike-slip fault

stress that squeezes rock until it folds or breaks

compression

the point on Earth's surface directly above an earthquake's focus

epicenter

surface wave

a type of seismic wave that forms when P waves and S waves reach Earth's surface

the measurement of an earthquake's strength based seismic waves and movement along faults

magnitude

a type of fault where the hanging wall slides upward; caused by compression in the crust

reverse fault

A type of seismic wave that compresses and expands the ground

P Wave

A type of fault where the hanging wall slides downward; caused by tension in the crust

normal fault

A scale that rates an earthquake's magnitude based on the size of its seismic waves

Richter Scale

A large area of flat land elevated high above sea level

Plateau

A type of seismic wave that moves the ground up and down or side to side

S Wave

An upward fold in rock formed by compression of Earth's crust

Anticline

The point beneath Earth's surface where rock breaks under stress and causes and earthquake

Focus

Stress that stretches rock so that it becomes thinner in the middle

Tension

Stress that pushes masses of rock in opposite directions, in a sideways movement

Shearing

A scale that rates earthquakes accordingly to their intensity and how much damage they cause at a particular place

Mercalli Scale

A downward fold in rock formed by compression in Earth's crust

syncline

A device that records ground movements caused by seismic waves as they move through Earth

Seismograph

The block of rock that forms the lower half of a fault

Footwall