Earths interior Flashcards
2 Discontinuities and where they are.
Mohoriocic-Between crust and mantle
Gutenberg-Between Mantle and core
Sea floor
Bottom of the ocean
Viscous
Thick and sticky liquid
Mantle
Middle layer of the Earth
Volume
The space an object occupies
Crust
Rocky outer layer of Earth
Discontinuities
Area between Earth’s interior layers
Core
Extremely hot center of the Earth-solid
Two types of evidence geologists use to learn about Earths interior
Direct evidence from rock samples
Indirect evidence from seismic waves
2 types of crust
Oceanic- consists mostly of basalt
Continental-consists of mainly granite
Lithosphere?
Uppermost part of mantle and the crust for a ridge layer about 100 kilometers thick.
Three parts of the Mantle
Lithosphere
Asthenosphere
Lower mantle
Asthenosphere?
Softer part of mantle below the lithosphere which is hotter and under increased pressure.
Lower mantle?
Solid material extending all the way to Earths core…
Two parts of the Core?
Outer and Inner Core
Outer Core?
Layer of molten metal that surrounds inner core.
Inner Core?
Dense ball of solid metal.
3 types of heat transfer
Conduction
Convection
Radiation
Radiation?
The transfer of energy through the empty space-has no direct contact.
Conduction?
Heat transfer by direct contact of particles of matter.
Convection?
Transfer of heat by the movement of heated fluids
Density?
Measure of how much mass there is in a volume of a substance.
What causes convection currents in Earths mantle?
Heat source is the Earths core and from the mantle itself
