Earth’s Internal Heat And Magmatism Flashcards
(32 cards)
Thinnest layer
Crust
Mantle
Largest layer
Mantle’s estimated thickness
1800 miles
Composed of liquefied metals and stays on that state because of the immense heat
Outer core
Outer core is composed of metals such as
Iron and nickel
Composed of metals but not in a liquid state
Inner core
Ia a result of the movement of tiny particles
Heat
Heat moves particles that are
Atoms, molecules or Ions
Plays a vital role in our planet that makes it livable
Heat energy
Is the Internal heat energy accumulated by dissipation in a planet during its few million years of evolution
Primordial heat
Major contribution of this internal heat
Accretional energy
The energy deposited during the early formation of a planet
Accretional energy
The storage of primordial heat that originates from times of accretion when kinetic energy of colliding particles was transformed into thermal energy
Core
The core is a storage of…
Primordial heat
Heat is constantly lost to the outer silicate layers of the mantle and crust of the earth through…
Convection and conduction
Heat flows from the earth to the space through…
Radiation
Radiogenic heat
Thermal energy released as a result of spontaneous nuclear disintegration of natural radioactive element inside the planet
Radioactive elements
Exists everywhere on earth in a fairly significant concentration.
Radioactive decay
Is a process that creates the formation if the earth’s land
Processes that transfers heat
Conduction, convection, radiation
Conduction
Happen in the earth earth’s surface in almost entire solid portions of the earth and plays a very important role in the lithosphere.
Convection
A very effective mode of heat transport in the earth by the movement of mass
Radiation
Heat exchange between the sun and the earth
Magma
Hot molten rocks beneath the earth
