Earths Lithosphere Flashcards
The sudden shaking of the ground that may result in destruction of infrastructure and lives
Earthquake
The supercontinent that is believed to have existed 250 million years ago
Pangaea
theory stating that the continents are were once joined together as one
Continental drift theory
.Waves that provided geologists information about the internal structure of the Earth
Seismic waves
A landform where motten matenals from inner Earth are released
Volcano
Outside later of earth -> solid rock, basalt and granite
Crust
2 types of crust
Oceanic crust-> denser,thinner,basalt
Continental crust ->less dense,thicker,granite
Lies below crust,2900 km thick-> hot dense iron and magnesium rich solid rock
Mantle
is the centre of the earth and is made up of two parts: the liquid outer core and solid inner core.
Core
Solid,outer part of earth -> brittle iller portion of mantle and the crust
Lithosphere
Thick, found under land masses
Ave thickness 25 to 70km
Old rock
Density of 2.7 g/cm^3
Made up of rocks called granite
Continental lithospheric plates
thinner, found in the ocean floor
average thickness is 7 to 10km
younger than continental crust
density: 3.0g/cm³
made up of rocks called basalt
Oceanic Lithospheric Plates
Two types of plates
Primary and secondary plates
Primary Plates
African Plate
Antarctic Plate
Eurasian Plate
North American Plate
South American Plate
Pacific Plate
Indo Australian plate
PRIMARY plates
Arabian Plate
Caribbean Plate
Nazca Plate
Scotia Plate
Juan de Fuca Plate
Cocos Plate
Philippine Sea Plate
Indian plate
Secondary plates
