Earth Subsystems Flashcards
Transitional boundary that divides the crust and upper mantle
Mohorovicic discontinuity
Mohorovicic discontinuity was discovered by who and when?
Andrija Mohorovicic 1909
Elements found in Crust
Oxygen
Iron
Aluminum
Magnesium
Calcium
Sodium
Potassium
Silicon
Sublayer directly below the crust and above upper mantle
Asthenosphere
What is the Mantle made up of?
Silicate rocks
How much does the mantle make up?
84% of the volume of our planet
Rocks embedded or trapped in rocks that come straight from the volcano
Xenoliths
Gutenberg Discontinuity was discovered by who and when?
Beno Gutenburg 1913
Transitional boundary between the lower mantle and the outer core.
Gutenberg Discontinuity
What is core made out of?
Iron and nickel
The primary source of the earth’s magnetic field
Iron
Transitional boundary that divides the outer core and inner core.
Lehman Discontinuity
Lehman Discontinuity was discovered by who and when?
Inge Lehman 1929
Encompasses all the water found on earth
Hydrosphere
How much percentage does the water cover earth?
70%