Flashcards
Force sources of thermal energy
Decay of radioactive elements
Pressure
Friction
Left over thermal energy
Theory of tectonic plates
Earths surface is made of separate slabs called plates that move slowly over earths upper layers
Convection
Transfer of thermal energy in a fluid by the movement of the fluid from place to place caused from the foundation of the earth
Earthquake
The sudden movement or vibrations on the ground that occur when rocks slip along enormous creeks in earths crust
Four types of stress
Comprehensive tension
Shear
Tortion
Compression
Strained energy
The energy that fills up as rocks deform as they break they replace waves
Fault
Break or crack in the earths crust
Seismic waves
The vibrations that in least by strained energy period, body, and surface
Focus
Underground point of origin for seismic waves and body waves originate
S waves
Brody waves mechanical wave moves partials side to side up an down and stops in liquids
P waves
body waves mechanical wave that moves particles forward and backward passes through solid and liquid, is first to occur
Epicenter
Directly above the focus where surface waves originate
Surface waves
Last to arrive does damage goes up from focus and out from epicenter
Mercall scale
Ranks quakes by damage 1-12
Richer scale
Ranks quakes on 1-10 scale
