SQ 1 Flashcards
Consist of crust and upper mantle
Lithosphere
Rocky outer or land part of earth
Lithosphere
Thinnest part of a planet made up of solid rocks. Thickness is 5-50km and a density of 2.8g/cm2
Crust
Layers of Earth
Crust
Mantle
Outer Core
Inner Core
Mafic (Bassalt and Gabbro)
Thin (7-10km)
Cold
Dense
Young (not older than 200 years)
Ocean Crust
Granite (Felsic)
Less dense
Thick (35-40km)
Older
Continental Crust
Elements found in Continental Crust (6)
Silicone
Oxygen
Aluminum
Calcium
Sodium
Potassium
States that the earth’s layer is fragmented into either a small or large plate
Plate Tectonic Theory
Plates moves for 2-4cm per year
Cause by slow moving magma
Most geological activities happens on plate boundaries
Plate Tectonic Theory
Place where two plates meet
Plate Boundaries
Waves of energy caused by the sudden breaking of rock within earth or explosion
Seismic Waves
2 types of Seismic Waves
Body Waves
Surface Waves
Waves are determined by their speed, movement and propagation medium
Seismic Waves
Travel through inner layers or interior of earth
Body Waves
Travel along crust
Surface Waves
Fastest; 1st to arrive
Move through solid rocks and liquids
P-Waves
(Primary or Compressional)
Slower than P-waves
Moves side to side
Move through liquids
S-Waves
(Secondary or Shear)
Fastest surface waves
Move side to side
Named after Augustus Edward Hough Love
Love Wave or L-Waves
Causes most shaking when earthquake occurs
Roll the ground like ocean waves
Named after John William Strutt Rayleigh
Rayleigh Wave or R-Waves
