Sedimentary rocks are deposited in horizontal layers

Slowest earthquake waves

Point in the earths crust where an earthquake originates

Tectonic plates coming together

Solid iron & nickel

Device used to detect earthquake waves

Long chain of undersea volcanic mountains located at a divergent plate boundary

Layers

Area on the Earth's surface that receives neither P nor S waves from a particular earthquake

The study of the magnetic properties of ancient rocks

A boundary between the crust and the outer part of the mantle

Mostly granitic rock

The north and south magnetic poles switch positions

Forms in the ocean at subduction zones

Kind of earthquake waves that can go through solids but not the liquid outer core

A recording of an earthquake made by a seismograph

Minimum number of reporting seismic stations needed to pinpoint the location of an earthquake

Formed where two plates are sliding past one another

What the sea floor is made from

The processes that are shaping the Earth today are the same processes that have been at work in the past

The force driving plate tectonics

The plastic part of the mantle just below the crust

Liquid iron part of the earth

Kind of boundary formed where plates move apart

Theory that describes changes in the crust in terms of establishing and re-establishing equlibrium

The rim of the Pacific ocean

Area of very thick sedimentary deposits, sinking and filling at the same time

Point on the surface of the earth directly above the earthquake focus

A break in the Earth's crust along which motion occurs

Fastest earthquake waves

A location on the Earth's surface that has experienced active volcanism for a long period of time. Examples: Hawaii, Yellowstone

Occurs when one plate dives down beneath another

Kind of earthquake wave that can travel through both the solid and liquid parts of the earth's interior

3 kinds of displacement of rock

Scale used to measure earthquake intensity (magnitude)

Scale used to measure earthquake effects (damage)

Where the youngest sea floor rock is found

**Q38*

**Q39*

**Q40*

**Q41*

**Q42*

**Q43*

**Q44*

**Q45*

**Q46*

**Q47*

**Q48*

**Q49*

**Q50*

Law of 'Original Horizontality'

S waves

Focus

Convergent boundary

Inner core

Seismograph

Mid Ocean Ridge

Strata

Shadow zone

Paleomagnetism

MOHO

Continental crust

Magnetic reversal

Trench

S-waves

Seismogram

Three

Transform boundary

Basalt

Uniformitarianism

Convection currents in the mantle

Asthenosphere

Outer core

Divergent boundary

Isostasy

Ring of fire

Geosyncline

Epicenter

Fault

P-waves

Hot Spot

Subduction

P-waves

Tilting, folding, and faulting

Richter scale

Mercalli scale

On the mid-ocean ridge

**A38*

**A39*

**A40*

**A41*

**A42*

**A43*

**A44*

**A45*

**A46*

**A47*

**A48*

**A49*

**A50*